DIAGNOSTICS -> Automatic Transaxle (U240E) for Your Toyota Avensis 4 Door First Generation (1997-2003)

DI–60  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
AUTOMATIC TRANSAXLE (U240E)  
DI2L4–11  
HOW TO PROCEED WITH TROUBLESHOOTING  
Vehicle Brought to Workshop  
are titles of pages in this manual, with the  
Items inside  
page number indicated in the bottom portion. See the indicated  
pages for detailed explanations.  
Customer Problem Analysis  
P. DI–61  
1
2
Connect the hand–held tester to DLC3.  
If the display shows ”UNABLE TO CONNECT TO VEHICLE” when you have connected the  
hand–held tester, inspect DLC3 P. DI–62  
3
4
Check DTC and Freeze Frame Data (Precheck)  
Record or Print DTC and Freeze Frame Data P DI–62  
Clear DTC and Freeze Frame Data P. DI–74  
Visual Inspection  
5
6
7
Setting the Check Mode Diagnosis P. DI–62  
Symptom does not occur  
8
Symptom Simulation  
Problem Symptom Confirmation  
Symptom occur  
P. IN–20  
11  
9
OK Code  
DTC Check  
P. DI–62  
NG  
Basic Inspection  
P. DI–62  
OK  
12  
NG  
10  
Mechanical System Test  
P. DI–62  
DTC Chart  
P. DI–74  
13  
OK  
NG  
OK  
Manual Shifting Test  
P. DI–62  
14  
Problem Symptoms Table– P. DI–79  
Chapter 3  
(Off–Vehicle)  
P. DI–79  
Chapter 1  
(Electronic)  
P. DI–79  
Chapter 2  
(On–Vehicle)  
P. DI–79  
NG  
OK  
OK  
NG  
NG  
15  
16  
Parts Inspection  
S Neutral Start Switch Circuit (Except Europe) Check  
S Kick–down Switch Circuit Check  
Circuit  
Inspection  
P. DI–82 to DI–124  
17  
18  
Identification of Problem  
Confirmation Test  
End  
Repair  
AVENSIS/CORONA SUP (RM781E)  
DI–61  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI2L5–06  
CUSTOMER PROBLEM ANALYSIS CHECK  
Automatic Transaxle  
System Check Sheet  
Inspector’s  
Name  
:
Registration No.  
/
/
Customer’s Name  
Registration Year  
Frame No.  
Date Vehicle  
Brought In  
km  
mile  
Odometer Reading  
/
/
Date Problem  
Occurred  
/
/
How Often Does  
Problem Occur?  
Intermittent (  
times a day)  
Continuous  
Vehicle does not move (  
Any range  
1st → 2nd 2nd → 3rd  
O/D → 3rd 3rd → 2nd  
Particular range)  
No up–shift  
(
3rd → O/D)  
No down–shift  
(
2nd → 1st)  
Lock–up malfunction  
Shift point too high or too low  
Symptoms  
Harsh engagement (  
Slip or shudder  
No kick–down  
Others  
N → D  
Lock–up  
Any drive range)  
Malfunction  
Indicator Lamp  
Normal  
Check Item  
DTC Check  
Remains ON  
Malfunction code (DTC  
Malfunction code (DTC  
)
)
Normal code  
Normal code  
1st Time  
2nd Time  
AVENSIS/CORONA SUP (RM781E)  
DI–62  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI80F–01  
PRE–CHECK  
1.  
DIAGNOSIS SYSTEM  
(a) Description  
S
When troubleshooting Euro–OBD vehicles, the  
only difference from the usual troubleshooting pro-  
cedure is that you connect an OBD scan tool com-  
plying with ISO15031–4 or hand–held tester to the  
vehicle, and read off various data output from the  
vehicle’s engine and ECT ECU.  
S
Euro–OBD regulations require that the vehicle’s  
on–board computer lights up the check engine  
warning light (CHK ENG) on the instrument panel  
when the computer detects a malfunction in the  
computer itself or in drive system components  
which affect vehicle emissions. In addition to the  
CHK ENG lighting up when a malfunction is de-  
tected, the applicable DTCs prescribed by  
ISO15031–6 are recorded in the engine and ECT  
ECU memory (See page DI–74).  
A13822  
If the malfunction only occurs in 3 trips, the CHK  
ENG goes off but the DTCs remain recorded in the  
engine and ECT ECU memory.  
S
S
To check the DTCs, connect an OBD scan tool or  
hand–held tester to the Data Link Connector  
(DLC3) on the vehicle. The OBD scan tool or hand–  
held tester also enables you to erase the DTCs and  
check freeze frame data and various forms of en-  
gine data (For instruction book).  
Hand–held Tester  
DTCs include ISO controlled codes and manufac-  
turer controlled codes.  
DLC3  
ISO controlled codes must be set as prescribed by  
the ISO, while manufacturer controlled codes can  
be set freely by the manufacturer within the pre-  
scribed limits (See DTC chart on page DI–74).  
D01600  
AVENSIS/CORONA SUP (RM781E)  
DI–63  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
S
The diagnosis system operates in normal mode  
during normal vehicle use, and also has a check  
mode for technicians to simulate malfunction symp-  
toms and perform troubleshooting. Most DTCs use  
2 trip detection logic(*) to prevent erroneous detec-  
tion. By switching the engine and ECT ECU to  
check mode when troubleshooting, the technician  
can cause the CHK ENG to light up and for a mal-  
function that is only detected once or momentarily  
(hand–held tester) (See page DI–62).  
S
*2 trip detection logic:  
When a logic malfunction is first detected, the mal-  
function is temporarily stored in the engine andECT  
ECU memory. If the same malfunction is detected  
again during the 2nd test drive, this 2nd detection  
causes the CHK ENG to light up .  
(b) Inspect the DLC3.  
The vehicle’s engine and ECT ECU uses ISO 9141–2 for  
communication. The terminal arrangement of DLC3 com-  
plies with ISO15031–3 and matches the ISO 9141–2 for-  
mat.  
1 2 3 4 5 6 7 8  
910111213141516  
DLC3  
A04550  
Testerconnection  
7 (Bus ę Line) – 5 (Signal ground)  
4 (Chassis Ground) – Body  
16 (B+) – Body  
Condition  
Specifiedcondition  
Pulsegeneration  
1 Ω or less  
Duringcommunication  
Always  
Always  
9 – 14 V  
HINT:  
If your display shows ”UNABLE TO CONNECT TO VEHICLE”  
when you have connected the cable of OBD scan tool or hand–  
held tester to the DLC3, turned the ignition switch ON and oper-  
ated the scan tool, there is a problem on the vehicle side or tool  
side.  
S
If communication is normal when the tool is connected to  
another vehicle, inspect the DLC3 on the original vehicle.  
If communication is still not possible when the tool is con-  
nected connected to another vehicle, the problem is prob-  
ably in the tool itself, so consult the Service Department  
listed in the tool’s instruction manual.  
S
AVENSIS/CORONA SUP (RM781E)  
DI–64  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2.  
INSPECT DIAGNOSIS (Normal Mode)  
(a) Check the CHK ENG.  
(1) The CHK ENG comes on when the ignition switch  
is turned ON and the engine is not running.  
HINT:  
If the CHK ENG does not light up, troubleshoot the combination  
meter (See page BE–1).  
(2) When the engine is started, the CHK ENG should  
go off. If the lamp remains on, the diagnosis system  
has detected a malfunction or abnormality in the  
system.  
A13822  
(b) Check the DTC.  
NOTICE:  
Hand–held Tester  
Hand–held tester only: When the diagnostic system is  
switched from the normal mode to the check mode, it  
erases all DTCs and freeze frame data recorded in normal  
mode. So before switching modes, always check the DTCs  
and freeze frame data, and note them down.  
(1) Prepare an OBD scan tool or hand–held tester.  
(2) Connect the OBD scan tool or hand–held tester to  
the DLC3 at the lower of the instrument panel.  
(3) Turn the ignition switch ON and push the OBD scan  
tool or hand–held tester switch ON.  
DLC3  
D01600  
(4) Use the OBD scan tool or hand–held tester to check  
the DTCs and freeze frame data and note them  
down (For operating instructions, see the OBD scan  
tool’s instruction book).  
(5) See page DI–74 to confirm the details of the DTCs.  
NOTICE:  
When simulating symptoms with an OBD scan tool (ex-  
cluding hand–held tester) to check the DTCs, use normal  
mode. For codes on the DTCs chart subject to ”2 trip detec-  
tion logic”, turn the ignition switch OFF after the symptom  
is simulated the 1st time. Then repeat the simulation pro-  
cess again. When the problem has been simulated twice,  
the CHK ENG is indicated on the instrument panel and  
DTCs are recorded in the engine and ECT ECU.  
AVENSIS/CORONA SUP (RM781E)  
DI–65  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
3.  
INSPECT DIAGNOSIS (Check Mode)  
HINT:  
Hand–held tester only: Compared to the normal mode, the  
check mode has high sensing ability to detect malfunctions.  
Furthermore, the same diagnostic items which are detected in  
Normal mode can also be detected in the check mode.  
(a) Check the DTC.  
(1) Check the initial conditions.  
S
S
S
S
Battery positive voltage 11 V or more.  
Throttle valve fully closed.  
Transaxle in P position.  
A/C switched off.  
(2) Turn the ignition switch OFF.  
(3) Prepare the hand–held tester.  
(4) Connect the hand–held tester to DLC3 at the lower  
of the instrument panel.  
Hand–held Tester  
(5) Turn the ignition switch ON and switch the hand–  
held tester ON.  
DLC3  
D01600  
(6) Switch the hand–held tester from normal mode to  
check mode (Check that the CHK ENG flashes).  
(7) Start the engine (CHK ENG goes out after the en-  
gine starts).  
(8) Simulate the conditions of the malfunction de-  
scribed by the customer.  
0.13 sec.  
ON  
0.13 sec.  
NOTICE:  
OFF  
Leave the ignition switch ON until you have checked the  
DTCs, etc.  
BR3904  
(9) After simulating the malfunction conditions, use the  
hand–held tester diagnosis selector to check the  
DTCs and freeze frame data, etc.  
HINT:  
Take care not to turn the ignition switch OFF, as turning it off  
switches the diagnosis system from check mode to normal  
mode, so all DTCs, etc. are erased.  
(10) After checking the DTC, inspect the applicable cir-  
cuit.  
AVENSIS/CORONA SUP (RM781E)  
DI–66  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
(b) Clear the DTC.  
The following actions will erase the DTC and freezed  
frame data. Operating an OBD scan tool or hand–held  
tester to erase the codes (See the OBD scan tool’s  
instruction book for operating instructions.).  
4.  
PROBLEM SYMPTOM CONFIRMATION  
Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms of the  
trouble. If the problem is that the transaxle does not shift up, shift down, or the shift point is too high or too  
low conduct the following road test referring to the automatic shift schedule and simulate the problem symp-  
toms.  
5.  
ROAD TEST  
NOTICE:  
Conduct the test at normal operating ATF temperature 50 – 80 °C (122 – 176 °F).  
(a) D range test  
Shift into the D range and fully depress the accelerator pedal and check the following points:  
(1) Check up–shift operation.  
Check to see that 1 → 2, 2 → 3 and 3 → O/D up–shift takes place, and that the shift points con-  
form to the automatic shift schedule (See page SS–23).  
HINT:  
S
O/D Gear Up–shift Prohibition Control (1. Water temp. is 60 °C (140 °F) or less. 2. If there is a 10 km/h  
(6 mph) difference between the set cruise control speed and vehicle speed.)  
O/D Gear Lock–up Prohibition Control (1. Brake pedal is depressed. 2. Water temp. is 60 °C (140 °F)  
or lower)  
S
(2) Check for shift shock and slip.  
Check for shock and slip at the 1 → 2, 2 → 3 and 3 → O/D up–shift.  
(3) Check for abnormal noises and vibration.  
Run in D range lock–up or O/D gear and check for abnormal noises and vibration.  
HINT:  
The check for the cause of abnormal noises and vibration must be done very thoroughly as it could also be  
sure to loss of balance in the differential, torque converter, etc.  
(4) Check kick–down operation.  
While running in the D range, 2nd, 3rd and O/D gears, check to see that the possible kick–down  
vehicle speed limits for 2 → 1, 3 → 2 and O/D → 3 kick–downs conform to those indicated in the  
automatic shift schedule (See page SS–23).  
(5) Check for abnormal shock and slip at kick–down.  
(6) Check the lock–up mechanism.  
S
Drive in D range O/D gear, at a steady speed (lock–up ON) of about 60 km/h (37 mph).  
Lightly depress the accelerator pedal and check that the engine speed does not change  
abruptly.  
S
If there is a big jump in engine speed, there is no lock–up.  
(b) 2 range test  
Shift into the 2 range and fully depress the accelerator pedal and check the following points:  
(1) Check up–shift operation.  
Check to see that the 1 → 2 up–shift takes place and that the shift point conforms to the automatic  
shift schedule (See page SS–23).  
HINT:  
There is no O/D up–shift and lock–up in the 2 range.  
(2) Check engine braking.  
While running in the 2 range and 2nd gear, release the accelerator pedal and check the engine  
braking effect.  
AVENSIS/CORONA SUP (RM781E)  
DI–67  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up–shift and  
down–shift.  
(c) L range test  
Shift into the L range and fully depress the accelerator pedal and check the following points:  
(1) Check no up–shift.  
While running in the L range, check that there is no up–shift to 2nd gear.  
(2) Check engine braking.  
While running in the L range, release the accelerator pedal and check the engine braking effect.  
(3) Check for abnormal noises during acceleration and deceleration.  
(d) R range test  
Shift into the R range and fully depress the accelerator pedal and check for slipping.  
CAUTION:  
Before conducting this test ensure that the test area is free from people and obstruction.  
(e) P range test  
Stop the vehicle on a grade (more than 5°) and after shifting into the P range, release the parking  
brake. Then, check to see that the parking lock pawl holds the vehicle in place.  
6.  
BASIC INSPECTION  
(a) Check the fluid level.  
HINT:  
Drive the vehicle so that the engine and transaxle are at normal  
operating temperature.  
Fluid temperature: 70 – 80 °C (158 – 176 °F)  
(1) Park the vehicle on a level surface and set the park-  
ing brake.  
(2) With the engine idling and the brake pedal de-  
pressed, shift the shift lever into all ranges from P  
to L range and return to P range.  
(3) Pull out the dipstick and wipe it clean.  
(4) Push it back fully into the pipe.  
D01529  
(5) Pull it out and check that the fluid level is in the HOT  
range.  
OK if hot  
If the level is not within the range, add new fluid.  
Fluid type: ATF Type T–IV  
Add if hot  
NOTICE:  
Do not overfill.  
(b) Check the fluid condition.  
If the fluid smells burnt or is black, replace it.  
AT3417  
AVENSIS/CORONA SUP (RM781E)  
DI–68  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
(c) Replace the ATF.  
(1) Remove the drain plug and drain the fluid.  
(2) Reinstall the drain plug securely.  
D07261  
AT8562  
AT3417  
(3) With the engine OFF add new fluid through the oil  
filler pipe.  
Fluid type: ATF Type T–IV  
Capacity: 4.1 liters (4.3 US qts, 3.6 Imp.qts)  
(4) Start the engine and shift the shift lever into all  
ranges from P to L range and then shift into P range.  
(5) With the engine idling, check the fluid level. Add  
fluid up to the COOL level on the dipstick.  
(6) Check the fluid level at the normal operating tem-  
perature, 70 – 80 °C (158 – 176 °F), and add as  
necessary.  
OK if hot  
Add if hot  
NOTICE:  
Do not overfill.  
(d) Check the fluid leaks.  
Check for leaks in the transaxle.  
If there are leaks, it is necessary to repair or replace O–rings,  
FIPGs, oil seals, plugs or other parts.  
(e) Inspect and adjust the shift lever position.  
When shifting the shift lever from the N range to other  
positions, check that the lever can be shifted smoothly  
and accurately to each range and that the position indica-  
tor is not aligned with the correct position.  
If the indicator is not aligned with the correct position, carry out  
the following adjustment procedures.  
(1) Loosen the nut on the shift lever.  
(2) Push the control shaft fully downward.  
D07258  
AVENSIS/CORONA SUP (RM781E)  
DI–69  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
(3) Return the control shaft lever 2 notches to N range.  
(4) Set the shift lever to N range.  
(5) While holding the shift lever lightly toward the R  
range side, tighten the shift lever nut.  
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)  
N
(6) Start the engine and make sure that the vehicle  
moves forward when shifting the lever from the N to  
D range and reverses when shifting it to the R  
range.  
R
P
D07260  
(f)  
Inspect and adjust the neutral start switch.  
Check that the engine can be started with the shift lever  
only in the N or P range, but not in other ranges.  
Neutral Basic  
Line  
Bolt  
If it is not as stated above, carry out the following adjustment  
procedures.  
(1) Loosen the neutral start switch bolt and set the shift  
lever to the N range.  
Bolt  
(2) Align the groove and the neutral basic line.  
(3) Holding the shift selector, and tighten the bolt.  
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)  
HINT:  
Groove  
D07257  
For continuity inspection of the neutral start switch, see page  
DI–112.  
AVENSIS/CORONA SUP (RM781E)  
DI–70  
7.  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
MECHANICAL SYSTEM TESTS  
(a) Measure the stall speed.  
The object of this test is to check the overall performance of the transaxle and engine by measuring  
the stall speeds in the D and R ranges.  
NOTICE:  
S
S
S
S
Do the test at normal operating ATF temperature 50 – 80 °C (122 – 176 °F).  
Do not continuously run this test for longer than 5 seconds.  
To ensure safety, do this test in a wide, clear level area which provides good traction.  
The stall test should always be carried out in pairs. One technician should observe the condi-  
tions of wheels or wheel stoppers outside the vehicle while the other is doing the test.  
(1) Chock the 4 wheels.  
(2) Connect a hand–held tester to DLC3.  
(3) Fully apply the parking brake.  
(4) Keep your left foot pressing firmly on the brake pedal.  
(5) Start the engine.  
(6) Shift into the D range. Press all the way down on the accelerator pedal with your right foot.  
(7) Quickly read the stall speed at this time.  
Stall speed: 2,550 ± 150 rpm  
(8) Do the same test in the R range.  
Stall speed: 2,550 ± 150 rpm  
Evaluation:  
Problem  
Possible cause  
S Engine output may be insufficient  
S Stator one–way clutch not operating properly  
HINT: If more than 600 rpm below the specified value, the torque  
converter could be faulty.  
(a) Stall speed low in D and R ranges  
(b) Stall speed high in D range  
S Line pressure too low  
S Forward clutch slipping  
S No.2 one–way clutch not operating properly  
S O/D clutch slipping  
S Line pressure too low  
S Direct clutch slipping  
S 1st & reverse brake slipping  
S O/D clutch slipping  
(c) Stall speed high in R range  
S Line pressure too low  
(d) Stall speed high in D and R ranges  
S Improperfluidlevel  
S O/D one–way clutch not operating properly  
AVENSIS/CORONA SUP (RM781E)  
DI–71  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
(b) Measure the time lag.  
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before  
the shock can be felt. This is used for checking the condition of the O/D direct clutch, forward clutch,  
and 1st & reverse brake.  
NOTICE:  
S
S
S
Do the test at normal operating ATF temperature 50 – 80 °C (122 – 176 °F).  
Be sure to allow 1 minute interval between tests.  
Take 3 measurements and take the average value.  
(1) Chock the 4 wheels.  
(2) Connect a hand–held tester to DLC3.  
(3) Start engine and check idle speed.  
Idle speed: 675 ± 50 rpm (In N range and A/C OFF)  
(4) Shift the lever from N to D range. Using a stop watch, measure the time from when the lever is  
shifted until the shock is felt.  
Time lag: N → D less than 1.2 seconds  
(5) In the same way, measure the time lag for N → R.  
Time lag: N → R less than 1.5 seconds  
Evaluation (If N → D or N → R time lag is longer than the specified):  
Problem  
Possible cause  
S Line pressure too low  
N → D time lag is longer  
N → R time lag is longer  
S Forward clutch worn  
S O/D No. 2 one–way clutch not operating properly  
S Line pressure too low  
S Direct clutch worn  
S 1st & reverse brake worn  
S O/D one–way clutch not operating properly  
AVENSIS/CORONA SUP (RM781E)  
DI–72  
8.  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
HYDRAULIC TEST  
Measure the line pressure.  
NOTICE:  
S
Do the test at normal operation ATF temperature 50 – 80 °C (122 – 176 °F).  
The line pressure test should always be carried out in pairs. One technician should observe  
the conditions of wheels or wheel stopper outside the vehicle while the other is doing the test.  
Be careful to prevent SST’s hose from interfering with the exhaust pipe.  
(1) Warm up the ATF.  
S
S
(2) Remove the test plug on the rear side of the transaxle case and connect SST (See page AX–33  
for the location to connect SST).  
SST 09992–00095 (09992– 00231, 09992–00271)  
(3) Fully apply the parking brake and chock the 4 wheels.  
(4) Connect a hand–held tester to DLC3.  
(5) Start the engine and check idling speed.  
(6) Keep your left foot pressing firmly on the brake pedal and shift into D range.  
(7) Measure the line pressure when the engine is idling.  
(8) Depress the accelerator pedal all the way down. Quickly read the highest line pressure when  
engine speed reaches stall speed.  
(9) In the same way, do the test in R range.  
Specified line pressure:  
2
2
Condition  
Idling  
D range  
kPa (kgf / cm , psi)  
R range  
kPa (kgf / cm , psi)  
372 – 412 (3.8 – 4.2, 54 – 59)  
640 – 742 (6.5 – 7.6, 93 – 107)  
Stall  
931 – 1,031 (9.5 – 10.5, 134 – 149)  
1,768 – 1,968 (18.0 – 20.1, 255 – 286)  
Evaluation:  
Problem  
Possible cause  
S Throttle valve defective  
If the measured values at all ranges are higher  
If the measured values at all ranges are lower  
S Regulator valve detective  
S Throttle valve defective  
S Regulator valve defective  
S Oil pump defective  
S O/D direct clutch defective  
S D range circuit fluid leakage  
If pressure is low in the D range only  
If pressure is low in the R range only  
S Forward clutch defective  
S R range circuit fluid leakage  
S Direct clutch defective  
S 1st & reverse brake defective  
AVENSIS/CORONA SUP (RM781E)  
DI–73  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
9.  
MANUAL SHIFTING TEST  
HINT:  
By this test, it can be determined whether the trouble is within  
the electrical circuit or is a mechanical problem in the transaxle.  
(a) Disconnect the solenoid wire.  
(b) Inspect the manual driving operation.  
Check that the shift and gear positions correspond to the  
table below.  
While driving, shift through the L, 2 and D ranges.  
Check that the gear change corresponds to the shift  
range.  
D09299  
Shiftrange  
Gearposition  
O/D  
D
2
O/D  
L
1st  
R
P
Reverse  
Pawl Lock  
HINT:  
If the L, 2 and D range gear positions are difficult to distinguish,  
do the above read test.  
If any abnormality is found in the above test, the problem is in  
the transaxle itself.  
(c) Connect the solenoid wire.  
(d) Cancel out the DTC.  
AVENSIS/CORONA SUP (RM781E)  
DI–74  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RF–03  
DIAGNOSTIC TROUBLE CODE CHART  
If a DTC is displayed during the DTC check, check the circuit listed for that code in the table below and pro-  
ceed to the page given.  
DTC No.  
Check engine  
*2  
DetectionItem  
TroubleArea  
Memory  
*1  
(See Page)  
warning light  
S Open or short in vehicle speed sensor circuit  
S Vehicle speed sensor  
P0500  
VehicleSpeed Sensor  
Malfunction  
S Combinationmeter  
f
f
f
(DI–82)  
S Engine and ECT ECU  
S Automatictransaxleassembly  
S Open or short in ATF temperature sensor circuit  
P0710  
Transmission Fluid Temperature  
SensorMalfunction  
S ATF temperature sensor  
f
(DI–85)  
S Engine and ECT ECU  
Transmission Fluid Temperature S Open or short in ATF temperature sensor circuit  
3
P0711 *  
SensorRnge/Performanceprob- S ATF temperature sensor  
f
f
f
f
f
f
f
f
f
f
f
f
f
f
(DI–85)  
lem  
S Engine and ECT ECU  
3
P0750 *  
Shift Solenoid A Malfunction  
(SL1 Solenoid Valve)  
S SL1 solenoid valve is stuck open or closed  
(DI–87)  
S Valve body is blocked up or stuck  
Shift Solenoid A Electrical Mal-  
function  
S Open or short in SL1 solenoid valve circuit  
S SL1 solenoid valve  
P0753  
(DI–89)  
(SL1 Solenoid Valve)  
S Engine and ECT ECU  
3
P0755 *  
Shift Solenoid B Malfunction  
(SL2 Solenoid Valve)  
S SL2 solenoid valve is stuck open or closed  
(DI–87)  
S Valve body is blocked up or stuck  
Shift Solenoid B Electrical Mal-  
function  
S Open or short in SL2 solenoid valve circuit  
S SL2 solenoid valve  
P0758  
(DI–89)  
(SL2 Solenoid Valve)  
S Engine and ECT ECU  
3
P0765 *  
Shift Solenoid D Malfunction  
(S4 Solenoid Valve)  
S S4 solenoid valve is stuck open or closed  
(DI–87)  
S Valve body is blocked up or stuck  
Shift Solenoid D Electrical Mal-  
function  
S Open or short in S4 solenoid valve circuit  
S S4 solenoid valve  
P0768  
(DI–89)  
(S4 Solenoid Valve)  
S Engine and ECT ECU  
S DSL solenoid valve is stuck open or closed  
S Valve body is blocked up or stuck  
S Lock–up clutch  
3
P0770 *  
Shift Solenoid E Malfunction  
(DSL Solenoid Valve)  
f
f
f
f
f
f
f
f
f
f
(DI–95)  
Shift Solenoid E Electrical Mal-  
function  
S Open or short in shift solenoid valve DSL circuit  
P0773  
S DSL solenoid valve  
(DI–97)  
(DSL Solenoid Valve)  
S Engine and ECT ECU  
S Open or short in stop light switch circuit  
P1520  
Stop Light Switch Circuit  
S Stop light switch  
(DI–100)  
S Engine and ECT ECU  
NT Revolution Sensor Circuit  
Malfunction  
S Open or short in input turbine speed sensor circuit  
P1725  
S Input turbine speed sensor  
(DI–105)  
(Input Turbine Speed Sensor)  
S Engine and ECT ECU  
NC Revolution Sensor Circuit  
Malfunction  
S Open or short in counter gear speed sensor circuit  
P1730  
S Counter gear speed sensor  
(DI–107)  
(Counter Gear Speed Sensor)  
S Engine and ECT ECU  
LinearSolenoidforAccumulator  
Pressure Control Circuit Mal-  
function  
S Open or short in SLT solenoid valve circuit  
S SLT solenoid valve  
P1760  
f
f
f
f
(DI–109)  
S Engine and ECT ECU  
(SLT Solenoid Valve)  
S Short in neutral start switch circuit  
S Neutral start switch  
P1780  
Neutral Start Switch Malfunction  
(DI–112)  
S Engine and ECT ECU  
AVENSIS/CORONA SUP (RM781E)  
DI–75  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
*1: ”f” mark means Check engine warning light blinks once every 2 seconds.  
”X” mark means Check engine warning light never blinks.  
*2: ”f” mark means Engine and ECT ECU memorizes the malfunction code if the Engine and ECT ECU  
detects the DTC detection condition.  
*3: European spec. only  
HINT:  
This DTC may be output when the clutch, brake and gear components etc. inside the automatic transaxle  
are damaged.  
AVENSIS/CORONA SUP (RM781E)  
DI–76  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6TF–03  
PARTS LOCATION  
Counter Gear  
Speed Sensor  
SLT Solenoid  
Valve  
Input Turbine  
Speed Sensor  
ATF Temperature  
Sensor  
SL1 Solenoid  
Valve  
Neutral Start  
Switch  
DSL Solenoid Valve  
SL2 Solenoid Valve  
S4 Solenoid Valve  
O/D OFF Indicator  
LHD:  
Kick–down Switch  
DLC3  
Engine and ECT ECU  
Stop Light Switch  
O/D Main Switch  
Pattern Select Switch  
D09910  
AVENSIS/CORONA SUP (RM781E)  
DI–77  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RG–03  
TERMINALS OF ECU  
E13  
E14  
E16  
E15  
E17  
D03442  
D01054  
Symbols (TerminalsNo.)  
WiringColor  
Condition  
STD Voltage (V)  
10 – 14  
IG ON and brake pedal depressed  
IG ON and brake pedal released  
IG ON  
STP (E13–22) ↔ E1 (E16–3)  
G–W ↔ BR  
Below 1  
10 – 14  
+
–
SL1 (E14–7) ↔ SL1 (E14–6)  
B ↔ W  
1st or 2nd gear  
10 – 14  
3rd or O/D gear  
Below 1  
Below 1  
10 – 14  
IG ON  
+
–
SL2 (E14–7) ↔ SL2 (E14–16)  
G ↔ L  
1st or 2nd gear  
3rd or O/D gear  
Below 1  
Below 1  
10 – 14  
IG ON  
P ↔ Body  
ground  
DSL (E14–25) ↔ Body ground  
Vehicle driving under lock–up position  
Pulse signal is output  
+
–
NC (E15–4) ↔ NC (E15–10)  
W ↔ B  
Engine is running  
Engine is running  
Below 1 ↔ 4 – 5  
Pulse signal is output  
+
–
NT (E15–5) ↔ NT (E15–11)  
G ↔ R  
Below 1 ↔ 4 – 5  
+
–
SLT (E14–15) ↔ SLT (E14–24)  
R ↔ L–W  
IG ON  
10 – 14  
10 – 14  
Below 1  
10 – 14  
Below 1  
10 – 14  
Below 1  
10 – 14  
Below 1  
10 – 14  
Below 1  
10 – 14  
Below 1  
Below 1  
Below 1  
10 – 14  
Below 1.5  
10 – 14  
O/D main switch ON  
OD2 (E13–11) ↔ E1 (E16–3)  
L ↔ BR  
Y–G ↔ BR  
O ↔ BR  
O/D main switch OFF  
IG ON and Shift lever L range  
IG ON and Shift lever other than L range  
IG ON and Shift lever 2 range  
IG ON and Shift lever other than 2 range  
IG ON and Shift lever R range  
IG ON and Shift lever other than R range  
IG ON and Shift lever D range  
IG ON and Shift lever other than D range  
IG ON and Shift lever P or N range  
IG ON and Shift lever other than P or N range  
IG ON and ATF temperature 110 °C (230 °F)  
IG ON  
L (E14–4) ↔ E1 (E16–3)  
2 (E14–11) ↔ E1 (E16–3)  
R (E14–1) ↔ E1 (E16–3)  
D (E14–10) ↔ E1 (E16–3)  
R–B ↔ BR  
B–Y ↔ BR  
NSW (E15–23) ↔ E1 (E16–3)  
THO (E14–8) ↔ E2 (E16–19)  
S4 (E14–26) ↔ E1 (E16–3)  
B–W ↔ BR  
O ↔ BR  
Y ↔ BR  
IG ON and O/D gear  
IG ON and accelerator pedal is fully depressed  
IG ON and accelerator is released  
KD (E13–17) ↔ E1 (E16–3)  
Y ↔ BR  
AVENSIS/CORONA SUP (RM781E)  
DI–78  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
IG ON and vehicle stationary  
Below 1  
SPD (E13–6) ↔ E1 (E16–3)  
G ↔ BR  
Pulse signal is output  
IG ON and turn one front wheel slowly  
Below 1 ↔ 4 –6  
IG ON and pattern select switch: PWR  
IG ON and pattern select switch: NORM  
IG ON and SNOW mode switch: ON  
IG ON and SNOW mode switch: OFF  
9 – 14  
Below 1  
9 – 14  
PWR (E14–9) – E1 (E16–3)  
SNWI (E14–19) – E1 (E16–3)  
P ↔ BR  
P–B ↔ BR  
Below 1.5  
AVENSIS/CORONA SUP (RM781E)  
DI–79  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RH–03  
PROBLEM SYMPTOMS TABLE  
If a normal code is displayed during the diagnostic trouble code check but the trouble still occurs, check the  
circuits for each symptom in the order given in the charts on the following pages and proceed to the page  
given for troubleshooting.  
The Matrix Chart is divided into 3 chapters.  
Chapter 1: Electronic circuit matrix chart  
Chapter 2: On–vehicle repair matrix chart  
Chapter 3: Off–vehicle repair matrix chart  
If the instruction ”Proceed to next circuit inspection shown on matrix chart” is given in the flow chart for each  
circuit, proceed to the circuit with the next highest number in the table to continue the check.  
If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check and  
replace the Engine and ECT ECU.  
Chapter 1: Electronic circuit matrix chart  
Symptom  
Suspect Area  
1. Neutral start switch circuit  
See page  
No up–shift (A particular gear, from 1st to 3rd gear, is not up–  
shifted)  
DI–112  
IN–30  
2. Engine and ECT ECU  
1. O/D main switch circuit  
2. Engine and ECT ECU  
DI–116  
IN–30  
No up–shift (3rd → O/D)  
No down–shift (O/D → 3rd)  
Engine and ECT ECU  
IN–30  
No down–shift (A particular gear, from 3rd to 1st gear, is not  
down–shifted)  
1. Neutral start switch circuit  
2. Engine and ECT ECU  
DI–112  
IN–30  
1. Stop light switch circuit  
2. Engine and ECT ECU  
DI–100  
IN–30  
No lock–up or No lock–up off  
Shift point too high or too low  
Up–shift to 2nd while in L range  
Up–shift to 3rd while in 2 range  
Engine and ECT ECU  
Engine and ECT ECU  
Engine and ECT ECU  
IN–30  
IN–30  
IN–30  
1. O/D main switch circuit  
2. Engine and ECT ECU  
DI–116  
IN–30  
Up–shift to O/D from 3rd while O/D main switch is OFF  
Up–shift to O/D from 3rd while engine is cold  
Harsh engagement (N → D)  
Engine and ECT ECU  
Engine and ECT ECU  
Engine and ECT ECU  
Engine and ECT ECU  
Engine and ECT ECU  
IN–30  
IN–30  
IN–30  
IN–30  
IN–30  
Harshengagement(Lock–up)  
Harsh engagement (Any driving range)  
Pooracceleration  
1. Kick–down switch circuit  
2. Engine and ECT ECU  
DI–124  
IN–30  
No kick–down  
Engine stalls when starting off or stopping  
Engine and ECT ECU  
IN–30  
AVENSIS/CORONA SUP (RM781E)  
DI–80  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
Chapter 2: On–vehicle repair  
(L: U240E automatic transaxle repair manual Pub. No. RM740U)  
Symptom  
Suspect Area  
See page  
1. Manualvalve  
L
L
–
Vehicle does not move in any forward range and reverse range  
2. Primary regulator valve  
3. Off–vehicle repair matrix chart  
Vehicle does not move in R range  
Off–vehicle repair matrix chart  
–
1. 1–2 shift valve  
L
No up–shift (1st → 2nd)  
2. Off–vehicle repair matrix chart  
–
1. 2–3 shift valve  
L
No up–shift (2nd → 3rd)  
No up–shift (3rd → O/D)  
2. Off–vehicle repair matrix chart  
–
1. 3–4 shift valve  
L
2. Off–vehicle repair matrix chart  
–
No down–shift (O/D → 3rd)  
No down–shift (3rd → 2nd)  
No down–shift (2nd → 1st)  
3–4 shift valve  
2–3 shift valve  
1–2 shift valve  
L
L
L
1. Lock–up relay valve  
L
No lock–up or No lock–up off  
Harsh engagement (N → D)  
Harsh engagement (N → R)  
Harshengagement(Lock–up)  
2. Off–vehicle repair matrix chart  
–
1. C accumulator  
L
1
2. Off–vehicle repair matrix chart  
–
1. C accumulator  
L
2
2. Off–vehicle repair matrix chart  
1. Lock–up relay valve  
L
2. Off–vehicle repair matrix chart  
–
Harsh engagement (2nd → 3rd)  
Harsh engagement (3rd → O/D)  
C accumulator  
L
L
2
B accumulator  
0
1. C accumulator  
L
0
Harsh engagement (O/D → 3rd)  
2. B accumulator  
L
0
1. Oil strainer  
L
Slip or shudder (Forward and reverse)  
2. Off–vehicle repair matrix chart  
–
No engine braking (1st: L range)  
No engine braking (2nd: 2 range)  
Off–vehicle repair matrix chart  
Off–vehicle repair matrix chart  
–
–
1. 1–2 shift valve  
2. 2–3 shift valve  
3. 3–4 shift valve  
L
L
L
No kick–down  
AVENSIS/CORONA SUP (RM781E)  
DI–81  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
Chapter 3: Off–vehicle repair  
(L: U240E automatic transaxle repair manual Pub. No. RM740U)  
Symptom  
Suspect Area  
See page  
1. Front and rear planetary gear  
2. U/D planetary gear  
L
L
L
L
L
Vehicle does not move in any forward range and reverse range  
3. U/D one–way clutch (F )  
2
4. Forward clutch (C )  
1
5. U/D brake (B )  
3
1. Front and rear planetary gear unit  
2. U/D planetary gear unit  
L
L
L
L
L
Vehicle does not move in R range  
3. Direct clutch (C )  
2
4. U/D brake (C )  
3
5. 1st & reverse brake (B )  
2
1. No. 1 one–way clutch (F )  
L
1
No up–shift (1st → 2nd)  
2. 2nd brake (B )  
L
1
No up–shift (2nd → 3rd)  
No up–shift (3rd → O/D)  
No lock–up or No lock–up off  
Direct clutch (C )  
L
L
2
U/D clutch (C )  
3
Torqueconverter  
AX–38  
1. Forward clutch (C )  
L
L
L
1
Harsh engagement (N → D)  
2. U/D one–way clutch (F )  
2
3. No. 1 one–way clutch (F )  
1
1. Direct clutch (C )  
L
2
Harsh engagement (N → R)  
2. 1st & reverse brake (B )  
L
2
Harshengagement(Lock–up)  
Torqueconverter  
AX–38  
1. Torqueconverter  
AX–38  
2. Forward clutch (C )  
L
L
L
L
L
1
3. Direct clutch (C )  
2
Slip or shudder (Forward position: After warm–up)  
4. U/D brake (C )  
3
5. No. 1 one–way clutch (F )  
1
6. U/D one–way clutch (F )  
2
1. Direct clutch (C )  
L
2
Slip or shudder (R range)  
Slip or shudder (1st)  
Slip or shudder (2nd)  
2. 1st & reverse brake (B )  
L
2
No. 1 one–way clutch (F )  
L
1
1. U/D one–way clutch (F )  
L
2
2. 2nd brake (B )  
L
1
Slip or shudder (3rd)  
Direct clutch (C )  
L
L
L
L
L
2
Slip or shudder (O/D)  
U/D clutch (C )  
3
No engine braking (1st – 3rd: D range)  
No engine braking (1st: L range)  
No engine braking (2nd: 2 range)  
U/D brake (B )  
3
1st & reverse brake (B )  
2
2nd brake (B )  
1
1. Torqueconverter  
2. U/D planetary gear  
AX–38  
Poor acceleration (All range)  
L
1. U/D clutch (C )  
L
3
Poor acceleration (O/D)  
2. U/D planetary gear  
L
Large shift shock or engine stalls when starting off or stopping  
Torqueconverter  
AX–38  
AVENSIS/CORONA SUP (RM781E)  
DI–82  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RI–03  
CIRCUIT INSPECTION  
DTC  
P0500 Vehicle Speed Sensor Malfunction  
CIRCUIT DESCRIPTION  
The ABS ECU output the vehicle speed signals to a speedometer in the combination meter, and the signals  
it is then transmitted to the Engine and ECT ECU. The Engine and ECT ECU determines the vehicle speed  
based on the frequency of these pulse signals.  
4–pulse  
4–pulse  
From  
Speed  
Sensor  
Engine and  
ECT ECU  
ABS ECU  
Combination  
Meter  
A00022  
DTC No.  
P0500  
DTCDetectingCondition  
TroubleArea  
S Open or short in vehicle speed sensor circuit  
S Vehicle speed sensor  
No vehicle speed sensor signal to Engine and ECT ECU dur-  
ing vehicle driving (2 trip detection logic)  
S Engine and ECT ECU  
S Combinationmeter  
WIRING DIAGRAM  
Engine and ECT ECU  
Combination Meter  
J44  
Junction  
Connector  
18  
6
E13  
G
D
D
G
C10  
SPD  
D10040  
AVENSIS/CORONA SUP (RM781E)  
DI–83  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check operation of speedometer.  
HINT:  
Read freeze frame data using hand–held tester. Because freeze frame records the engine conditions when  
the malfunction is detected. When troubleshooting it is useful for determining whether the vehicle was run-  
ning or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. at the time of the  
malfunction.  
CHECK:  
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.  
HINT:  
The vehicle speed sensor is operating normally if the speedometer display is normal.  
NG  
Check speedometer (See page BE–1).  
OK  
2
Check for short in harness and connector between terminal SPD of Engine and  
ECT ECU connector and body ground.  
PREPARATION:  
ON  
Disconnect the connector of the Engine and ECT ECU.  
CHECK:  
Check continuity between terminal SPD of the Engine and ECT  
ECU connector and body ground.  
OK:  
SPD  
No continuity (1M Ω or higher)  
D10027  
NG  
Repair or replace harness or connector.  
OK  
AVENSIS/CORONA SUP (RM781E)  
DI–84  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
3
Check voltage between terminal SPD of Engine and ECT ECU connector and  
body ground.  
PREPARATION:  
ON  
Turn ignition switch ON.  
CHECK:  
Measure voltage between terminal SPD of Engine and ECT  
ECU connector and body ground.  
OK:  
SPD  
(+)  
Voltage: 9 – 14 V  
(–)  
D10028  
NG  
Check for open in harness and connector be-  
tween J44 junction connector and Engine and  
ECT ECU (See page IN–30).  
OK  
4
Check for open in harness and connector between J44 junction connector and  
combination meter (See page IN–30).  
NG  
Repair or replace harness or connector.  
OK  
5
Check Engine and ECT ECU (See page IN–20).  
NG  
Replace Engine and ECT ECU.  
OK  
Check and repair ABS system.  
AVENSIS/CORONA SUP (RM781E)  
DI–85  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI80G–01  
DTC  
DTC  
P0710 Transmission Fluid Temperature Sensor  
Malfunction (ATF Temperature Sensor)  
P0711  
Transmission Fluid Temperature Circuit  
Range/Performance problem (Europe only)  
CIRCUIT DESCRIPTION  
The ATF temperature sensor converts fluid temperature into a resistance value which is input into the Engine  
and ECT ECU.  
DTC No.  
P0710  
DTCDetectingCondition  
TroubleArea  
Either (a) or (b) is detected for 0.5 sec. or more.  
(1–tripdetectionlogic)  
S Open or short in ATF temp. sensor  
S ATF temp. sensor  
(a) Temp. sensor resistance is less than 79 Ω.  
(b) After the engine has been operating for 15 minutes or  
more, the resistance at the temp. sensor is more than 156 kΩ.  
S Engine and ECT ECU  
Both (a) and (b) are detected.  
(2–tripdetectionlogic)  
S Open in ATF temp. sensor  
S ATF temp. sensor  
(a) After 12 seconds of the engine start, the temp. of the atmo-  
sphere and that of the engine coolant is more than –10°C.  
(b) After a normal driving for over 20 minutes and 10km, the  
ATF temp. is less than 10°C.  
P0711  
S Engine and ECT ECU  
WIRING DIAGRAM  
Engine and ECT ECU  
Automatic Transaxle  
O
8
E14  
1
E1  
THO  
O
THO  
ATF Temperature  
Sensor  
18  
IE2 IF2  
19  
E16  
6
E1  
18  
BR  
BR  
O
E2  
E2  
(RHD) (LHD)  
D10041  
AVENSIS/CORONA SUP (RM781E)  
DI–86  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check ATF temperature sensor.  
PREPARATION:  
(a) Disconnect the solenoid wire connector.  
(b) Remove the oil pan.  
6
(c) Disconnect all solenoid valve connectors.  
(d) Remove the transmission wire harness.  
CHECK:  
1
Measure resistance between terminals 1 and 6 of solenoid con-  
nector at 25 °C (77 °F) and 110 °C (230 °F).  
OK:  
D02967  
Resistance (Approx.):  
25 °C (77 °F): 3.5 kΩ  
110 °C (230 °F): 231 – 263 Ω  
NG  
Replace the ATF temperature sensor (transaxle  
wire).  
OK  
2
Check harness and connector between ATF temperature sensor and Engine and  
ECT ECU (See page IN–30).  
NG  
Repair or replace the harness or connector.  
OK  
Check and replace the Engine and ECT ECU  
(See page IN–30).  
AVENSIS/CORONA SUP (RM781E)  
DI–87  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI4ZZ–05  
DTC  
DTC  
DTC  
P0750 Shift Solenoid A Malfunction  
(SL1 Solenoid Valve) (Europe only)  
P0755 Shift Solenoid B Malfunction  
(SL2 Solenoid Valve) (Europe only)  
P0765 Shift Solenoid D Malfunction  
(S4 Solenoid Valve) (Europe only)  
SYSTEM DESCRIPTION  
The Engine and ECT ECU uses signals from the vehicle speed sensor to detect the actual gear position (1st,  
2nd, 3rd or O/D gear).  
Then the Engine and ECT ECU compares the actual gear with the shift schedule in the Engine and ECT  
ECU memory to detect mechanical trouble of the shift solenoid valves and valve body.  
DTC No.  
DTCDetectingCondition  
TroubleArea  
P0750  
P0755  
P0765  
During normal driving, the gear required by the ECM does not  
match the actual gear  
S SL1/SL2/S4 solenoid valve is stuck open or closed  
S Valve body is blocked up or stuck  
(2–tripdetectionlogic)  
HINT:  
Check the SL1 solenoid valve when DTC P0750/62 is output, check the SL2 solenoid valve when DTC  
P0755/63 is output and check S4 solenoid valve when DTC P0765/65 is output.  
AVENSIS/CORONA SUP (RM781E)  
DI–88  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check SL1, SL2 or S4 solenoid valve operation.  
PREPARATION:  
SL1 and SL2 solenoid valve  
(a) Jack up the vehicle.  
(b) Remove the oil pan.  
1
2
(c) Remove the SL1, SL2 or S4 solenoid valve.  
Check Solenoid Resistance:  
CHECK:  
(a) SL1 or SL2 solenoid valve:  
Measure resistance between terminals 1 and 2 of sole-  
noid connector.  
1
(b) S4 solenoid valve:  
2
Measure resistance between terminal 1 of solenoid con-  
nector and solenoid body.  
OK:  
(a) Resistance: 5.1 – 5.5 Ω  
(b) The shift solenoid valve makes operation noise.  
Check Solenoid Operation:  
CHECK:  
(a) SL1 or SL2 solenoid valve:  
Connect the positive (+) lead with an 23–W bulb to termi-  
nal 1 and the negative (–) lead to terminal 2 of solenoid  
connector, then check the movement of the valve.  
(b) S4 solenoid valve:  
(+)  
(+)  
(–)  
S4 solenoid valve  
(–)  
Connect the positive (+) lead with an 23–W bulb to termi-  
nal 1 of solenoid connector and the negative (–) lead to  
the solenoid valve body, then check the movement of the  
valve.  
OK:  
(a) Resistance: 5.1 – 5.5 Ω  
D03445  
D03446  
(b) The shift solenoid valve makes operation noise.  
D03724  
D03424 D03423  
NG  
Replace the SL1, SL2 or S4 solenoid valve.  
OK  
Check the valve body (See page AX–8).  
AVENSIS/CORONA SUP (RM781E)  
DI–89  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RY–03  
DTC  
DTC  
DTC  
P0753 Shift Solenoid A Electrical Malfunction  
(SL1 Solenoid Valve)  
P0758 Shift Solenoid B Electrical Malfunction  
(SL2 Solenoid Valve)  
P0768 Shift Solenoid D Electrical Malfunction  
(S4 Solenoid Valve)  
CIRCUIT DESCRIPTION  
Shifting from 1st to O/D is performed in combination with ON and OFF of the SL1 and SL2 solenoid valves  
controlled by Engine and ECT ECU. If an open or short circuit occurs in either of the solenoid valves, the  
Engine and ECT ECU controls the remaining normal solenoid valve to allow the vehicle to be operated  
smoothly (Fail safe function).  
DTC No.  
DTCDetectingCondition  
TroubleArea  
The Engine and ECT ECU checks for an open or short circuit  
in the SL1 and SL2 solenoid valves.  
(a) When the solenoid is energized, the duty ratio exceed 75  
%.  
P0753  
P0758  
(b) When the solenoid is not energized, the duty ratio is less  
than 3 %.  
S Open or short in SL1/SL2/S4 solenoid valve circuit  
S SL1/SL2/S4solenoidvalve  
The Engine and ECT ECU checks for an open or short circuit  
in the S4 solenoid valve circuit when it changes.  
The Engine and ECT ECU records DTC P0768/65 if condition  
(a) or (b) is detected.  
S Engine and ECT ECU  
P0768  
(a) When the solenoid is energized, the solenoid resistance is  
8 Ω or less and is counted.  
(b) When the solenoid is not energized, the solenoid resistance  
is 100 kΩ or more and is counted.  
HINT:  
Check the SL1 solenoid valve when DTC P0753/62 is output, check the SL2 solenoid valve when DTC  
P0758/63 is output and check the S4 solenoid valve when DTC P0768/65 is output.  
AVENSIS/CORONA SUP (RM781E)  
DI–90  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
Fail safe function:  
If either of the shift solenoid valve circuits develops an open or short, the Engine and ECT ECU turns the  
other solenoid ON and OFF to shift to the gear positions shown in the table below. The Engine and ECT ECU  
also turns the DSL solenoid valve OFF at the same time. If both solenoids are malfunction, hydraulic control  
cannot be performed electronically and must be done manually.  
Manual shifting as shown in the following table must be done (In the case of a short circuit, the Engine and  
ECT ECU stops sending current to the short circuited solenoid).  
SL1 SOLENOID MALFUNCTIONING  
SL2 SOLENOID  
MALFUNCTIONING  
NORMAL  
Driving at 3rd or O/D  
SolenoidValve  
Driving at 1st or 2nd  
SolenoidValve  
SolenoidValve  
SolenoidValve  
Gear  
Gear  
Gear  
1st  
Gear  
SL1 SL2 S4  
SL1 SL2 S4  
SL1 SL2 S4  
ON  
SL1 SL2 S4  
ON  
ON  
OFF  
OFF  
OFF  
3rd  
3rd  
3rd  
O/D  
X
X
X
X
ON  
2nd  
2nd  
3rd  
3rd  
X
X
X
X
OFF  
3rd  
3rd  
3rd  
O/D  
ON  
X
X
X
X
OFF  
OFF  
ON  
OFF  
OFF  
OFF ON  
2nd  
3rd  
OFF  
ON OFF  
OFF  
OFF  
ON  
OFF  
OFF  
ON  
OFF  
OFF OFF OFF  
ON  
OFF OFF  
ON  
OFF  
OFF  
OFF  
ON  
OFF  
O/D  
ON  
OFF OFF  
ON  
SL1 AND S4 SOLENOID MALFUNCTIONING  
S4 SOLENOID  
MALFUNCTIONING  
SL1 AND SL2 SOLENOID  
MALFUNCTIONING  
Driving at 3rd or O/D  
SolenoidValve  
Driving at 1st or 2nd  
SolenoidValve  
SolenoidValve  
Gear  
SolenoidValve  
Gear  
Gear  
Gear  
2nd  
2nd  
2nd  
2nd  
SL1 SL2 S4  
SL1 SL2 S4  
ON  
SL1 SL2 S4  
SL1 SL2 S4  
1st  
2nd  
3rd  
3rd  
ON  
ON ON  
OFF ON  
OFF OFF  
OFF OFF  
X
X
X
X
X
X
X
X
OFF  
OFF  
OFF  
ON  
3rd  
3rd  
3rd  
O/D  
3rd  
3rd  
3rd  
3rd  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
OFF  
ON  
ON  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
ON  
SL1, SL2 AND S4 SOLENOID  
MALFUNCTIONING  
SL2 AND S4 SOLENOID  
MALFUNCTIONING  
SolenoidValve  
SolenoidValve  
Gear  
Gear  
SL1 SL2 S4  
ON  
SL1 SL2 S4  
X
X
X
X
X
X
X
X
X
X
X
X
3rd  
3rd  
3rd  
3rd  
X
X
X
X
3rd  
3rd  
3rd  
3rd  
X
X
X
X
OFF  
OFF  
OFF  
OFF  
AVENSIS/CORONA SUP (RM781E)  
DI–91  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
WIRING DIAGRAM  
Engine and ECT ECU  
Automatic Transaxle  
SL1 Solenoid Valve  
5
7
E14  
+
SL1  
W
B
+
–
E1  
SL1  
10  
E1  
6
–
B
SL1  
W
E14  
SL1  
SL2 Solenoid Valve  
SL2  
17  
4
+
G
+
E14 SL2  
E1  
Y
9
16  
–
BR  
SL2  
L
–
SL2  
E1  
E14  
S4 Solenoid Valve  
S4  
8
26  
E14  
Y
E1  
S4  
R
D10189  
AVENSIS/CORONA SUP (RM781E)  
DI–92  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Measure resistance between terminals of Engine and ECT ECU.  
PREPARATION:  
Disconnect the connector from Engine and ECT ECU.  
CHECK:  
(a) Measure resistance between terminals SL1+ and SL1– of  
Engine and ECT ECU connector.  
(b) Measure resistance between terminals SL2+ and SL2– of  
Engine and ECT ECU connector.  
(c) Measure resistance between terminal S4 of Engine and  
ECT ECU connector and body ground.  
OK:  
+
–
SL1  
SL1  
Resistance:  
(a) SL1+ – SL1–: 5.3 ± 0.2 Ω  
(b) SL2+ – SL2–: 5.3 ± 0.2 Ω  
(c) S4 – Body ground: 13 ± 2 Ω  
–
+
SL2  
SL2  
S4  
D10029  
OK  
Check and replace the Engine and ECT ECU.  
NG  
AVENSIS/CORONA SUP (RM781E)  
DI–93  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2
Measure harness and connector between Engine and ECT ECU and automatic  
transaxle solenoid connector.  
PREPARATION:  
(a) Disconnect the solenoid connector from the automatic  
transaxle.  
(b) Disconnect the connector from the Engine and ECTECU.  
CHECK:  
+
SL1  
–
(a) Measure the harness and connector between terminal  
+
SL1  
SL1  
SL1+ or SL1– of Engine and ECT ECU and terminal SL1+  
or SL1– of solenoid connector.  
–
(b) Measure the harness and connector between terminal  
SL2+ or SL2– of Engine and ECT ECU and terminal SL2+  
or SL2– of solenoid connector.  
SL1  
SolenoidConnector  
(c) Measure the harness and connector between terminal S4  
of Engine and ECT ECU and terminal S4 of solenoid con-  
nector.  
+
SL2  
OK:  
+
–
SL2  
SL2  
Resistance: 0 Ω  
–
SL2  
Solenoid Connector  
S4  
S4  
Solenoid Connector  
D10030  
NG  
Repair or replace the harness or connector.  
OK  
AVENSIS/CORONA SUP (RM781E)  
DI–94  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
3
Check SL1, SL2 or S4 solenoid valve.  
PREPARATION:  
(a) Jack up the vehicle.  
(b) Remove the oil pan.  
SL1 and SL2 solenoid valve  
1
2
(c) Remove the SL1, SL2, or S4 solenoid valve.  
Check Solenoid Resistance:  
CHECK:  
(a) SL1 or SL2 solenoid valve:  
Measure resistance between terminals 1 and 2 of sole-  
noid connector.  
1
2
(b) S4 solenoid valve:  
Measure resistance between terminal 1 of solenoid con-  
nector and solenoid body.  
OK:  
(–)  
(+)  
Resistance: 5.1 – 5.5 Ω  
Check Solenoid Operation:  
CHECK:  
S4 solenoid valve  
(a) SL1 or SL2 solenoid valve:  
Connect the positive (+) lead with an 23–W bulb to termi-  
nal 1 and the negative (–) lead to terminal 2 of solenoid  
connector, then check the movement of the valve.  
(b) S4 solenoid valve:  
(–)  
(+)  
Connect the positive (+) lead with an 23–W bulb to termi-  
nal 1 of solenoid connector and the negative (–) lead to  
the solenoid valve body, then check the movement of the  
valve.  
OK:  
D03445  
D03446  
The shift solenoid valve makes operation noise.  
D03724  
D03424 D03423  
NG  
Replace the solenoid valve.  
OK  
Repair or replace the solenoid wire, harness  
and connector between Engine and ECT ECU  
and automatic transaxle solenoid connector.  
AVENSIS/CORONA SUP (RM781E)  
DI–95  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI4ZX–05  
DTC  
P0770 Shift Solenoid E Malfunction  
(DSL Solenoid Valve) (Europe only)  
SYSTEM DESCRIPTION  
The Engine and ECT ECU uses the signals from the throttle position sensor, air–flow meter and crankshaft  
position sensor to monitor the engagement condition of the lock–up clutch.  
Then the Engine and ECT ECU compares the engagement condition of the lock–up clutch with the lock–up  
schedule in the Engine and ECT ECU memory to detect mechanical trouble of the DSL solenoid valve, valve  
body and torque converter.  
DTC No.  
DTCDetectingCondition  
TroubleArea  
Lock–up does not occur when driving in the lock–up range  
(normal driving at 80 km/h [50 mph]), or lock–up remains ON  
in the lock–up OFF range.  
S DSL solenoid valve is stuck open or closed  
S Valve body blocked up or stuck  
S Lock–up clutch  
P0770  
(2–tripdetectionlogic)  
INSPECTION PROCEDURE  
1
Check DSL solenoid valve operation.  
PREPARATION:  
(–)  
(+)  
(a) Remove the oil pan.  
(b) Remove the DSL solenoid valve.  
CHECK:  
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,  
check that the solenoid valve does not leak air.  
(b) When battery positive voltage is supplied to the shift sole-  
noid valve, check that the solenoid valve opens.  
OK:  
(a) Solenoid valve does not leak air.  
(b) Solenoid valve opens.  
(–)  
(+)  
D03447  
D03448  
D03725  
NG  
Replace the DSL solenoid valve.  
OK  
AVENSIS/CORONA SUP (RM781E)  
DI–96  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2
Check valve body (See page AX–8).  
NG  
Repair or replace the valve body.  
OK  
Replace the torque converter (See page  
AX–38).  
AVENSIS/CORONA SUP (RM781E)  
DI–97  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RV–03  
DTC  
P0773 Shift Solenoid E Electrical Malfunction  
(DSL Solenoid Valve)  
CIRCUIT DESCRIPTION  
The DSL solenoid valve is turned ON and OFF by signals from the Engine and ECT ECU to control the hy-  
draulic pressure acting on the lock–up relay valve, which then controls operation of the lock–up clutch.  
DTC No.  
P0773  
DTCDetectingCondition  
TroubleArea  
Either (a) or (b) are detected for 1 time.  
(2–tripdetectionlogic)  
S Open or short in DSL solenoid valve circuit  
S DSL solenoid valve  
(a) Solenoid resistance is 8 Ω or less short circuit when sole-  
noid is energized.  
S Engine and ECT ECU  
(b) Solenoid resistance is 100 kΩ or more open circuit when  
solenoid is not energized.  
Fail safe function:  
If the Engine and ECT ECU detects a malfunction, it turns the DSL solenoid valve OFF.  
WIRING DIAGRAM  
Engine and ECT ECU  
Automatic Transaxle  
DSL Solenoid Valve  
25  
3
E1  
DSL  
G
P
DSL  
E14  
D07933  
AVENSIS/CORONA SUP (RM781E)  
DI–98  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check harness and connector between Engine and ECT ECU and automatic  
transaxle solenoid connector.  
PREPARATION:  
(a) Disconnect the solenoid connector from the transaxle.  
(b) Disconnect the connector from the Engine and ECTECU.  
CHECK:  
Measure the harness and connector between terminal DSL of  
DSL  
Engine and ECT ECU and terminal DSL of solenoid connector.  
DSL  
OK:  
There is continuity.  
D10031  
NG  
Repair or replace the harness or connector.  
OK  
AVENSIS/CORONA SUP (RM781E)  
DI–99  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2
Check shift solenoid valve DSL.  
Electrical Check:  
PREPARATION:  
(a) Jack up the vehicle.  
(b) Remove the oil pan.  
(c) Disconnect the DSL solenoid valve connector.  
(d) Remove the DSL solenoid valve.  
CHECK:  
(–)  
(+)  
(a) Measure resistance between terminal DSL of shift sole-  
noid valve and solenoid body.  
(b) Connect positive (+) lead to terminal of solenoid connec-  
tor, negative (–) lead to solenoid body.  
OK:  
(a) Resistance: 11 – 15 Ω  
(b) The DSL solenoid valve makes operation noise.  
(–)  
(+)  
Mechanical Check (Except Europe Only):  
PREPARATION:  
(a) Remove the oil pan.  
(b) Remove the DSL solenoid valve.  
CHECK:  
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,  
check that the solenoid valve does not leak air.  
(b) When battery positive voltage is supplied to the shift sole-  
noid valve, check that the solenoid valve opens.  
OK:  
(–)  
(+)  
(a) Solenoid valve does not leak air.  
(b) Solenoid valve opens.  
D03448  
D08282  
NG  
Replace the DSL solenoid valve.  
OK  
Check and replace or repair the solenoid  
wire.  
AVENSIS/CORONA SUP (RM781E)  
DI–100  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI80H–01  
DTC  
P1520 Stop Light Switch Signal Malfunction  
CIRCUIT DESCRIPTION  
The purpose of this circuit is to prevent the engine from stalling, while driving in lock–up condition, when  
brakes are suddenly applied.  
When the brake pedal is operated, this switch sends a signals to Engine and ECT ECU. Then the Engine  
and ECT ECU cancels operation of the lock–up clutch while braking is in progress.  
DTC No.  
P1520  
DTCDetectingCondition  
TroubleArea  
No stop light switch signal to Engine and ECT ECU during  
S Open or short in stop light switch circuit  
S Stop light switch  
driving.  
(2–tripdetectionlogic)  
S Engine and ECT ECU  
WIRING DIAGRAM  
Engine and  
ECT ECU  
Stop Light  
Switch  
Sedan:  
Instrument Panel J/B  
Center J/B  
STOP  
1
IA  
10  
IG  
21  
3F  
22  
8
3D  
5
W–R *  
W
G–W  
5
G–W  
STP  
E13  
6
W *  
2
1
8 3C  
G–W  
1
F17  
6
FL  
G–W  
G–W  
ID1 II1  
Block  
ALT  
5
6
*
*
*1  
*2  
*1  
F
F
1 F15  
B–G  
FL  
J/C  
D
D
*2  
High  
G–W  
Mounted  
Stop  
Light  
G–W  
1
2
2
6
4
MAIN  
Stop  
Light RH  
W–B W–B  
Stop Light  
LH  
4
*1: J12 (LHD), J28 (RHD)  
*2: J13 (LHD), J29 (RHD)  
*3: J10 (LHD), J30 (RHD)  
*4: J11 (LHD), J31 (RHD)  
*5: LHD  
A
J/C  
A
A
A
*4  
*4  
*4  
Battery  
W–B  
A
*3  
*3  
W–B  
*6: RHD  
W–B  
5
BM  
BL *  
6
BN *  
F13602  
AVENSIS/CORONA SUP (RM781E)  
DI–101  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
Lift Back (LHD):  
Instrument Panel J/B  
Engine and  
ECT ECU  
Stop Light  
Switch  
Center J/B  
STOP  
21  
3F  
8
3D  
1
22  
E13  
10  
IG  
W
G–W  
G–W  
W–R  
STP  
IA  
2
1
8 3C  
1 F17  
6
ID1  
FL  
Block  
G–W  
G–W  
G–W  
ALT  
D J14 D J14  
1
BD1  
1
F15  
B–G  
J/C  
F J15 F J15  
G–W  
3
G–W High  
FL  
MAIN  
Mounted  
Stop  
G–W  
1
5
3
Stop  
Stop Light  
LH  
W–B  
Light  
Light RH  
2
5
W–B  
E
E
B
J15  
J15  
J15  
J/C  
W–B  
W–B  
Battery  
E J14  
W–B  
E J14 B J14  
W–B  
BO  
BP  
BQ  
Lift Back (RHD):  
Engine and  
ECT ECU  
Stop Light  
Switch  
Center J/B  
Instrument Panel J/B  
STOP  
22  
E13  
21  
3F  
8
1
IA  
10  
IG  
G–W  
G–W  
W
STP  
3D  
2
1
W
8 3C  
1
1
F17  
ALT  
5
II1  
G–W  
G–W  
G–W  
FL  
Block  
E J33 D J32  
J/C  
1
BD1  
F15  
B–G  
FL  
E J33 E J33  
G–W  
G–W  
High  
G–W  
Mounted  
Stop  
Light  
MAIN  
1
2
3
5
Stop  
Stop Light  
RH  
Light LH  
5
3
Battery  
W–B  
W–B  
W–B  
BQ  
BP  
BO  
F13603  
AVENSIS/CORONA SUP (RM781E)  
DI–102  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
Wagon:  
Engine and  
ECT ECU  
Stop Light  
Switch  
Instrument Panel J/B  
STOP  
Center J/B  
21  
3F  
8
1
10  
IG  
22  
E13  
1
W–R *  
G–W  
G–W  
5
STP  
IA  
3D  
2
W *  
2
1
8 3C  
G–W  
1
1
F17  
ALT  
1
6
J16 *  
J34 *  
FL  
Block  
G–W  
2
ID1 II1  
1
2
*
*
B
1
2
J17 *  
J35 *  
F15  
B–G  
C
C
C
G–W  
Stop  
High  
G–W  
1
G–W  
FL  
Mounted  
Stop  
MAIN  
2
2
Stop Light  
RH  
Light  
Light LH  
2
A
4
A
4
*1: LHD  
*2: RHD  
W–B  
W–B  
W–B  
1
2
A
J17 *  
J35 *  
Battery  
Junction Connector  
A
A
W–B  
W–B  
BR  
BS  
F13604  
AVENSIS/CORONA SUP (RM781E)  
DI–103  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
HINT:  
Read freeze frame data using hand–held tester. Because freeze frame records the engine conditions when  
the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was run-  
ning or stopped, the engine warmed up or not, the air–fuel ratio lean or rich, etc. at the time of the malfunction.  
1
Check operation of stop light.  
CHECK:  
Check if the stop lights go on and off normally when the brake pedal is depressed and released.  
NG Check and repair stop light circuit.  
OK  
2
Check STP signal.  
When using hand–held tester:  
PREPARATION:  
ON  
(a) Connect the hand–held tester to the DLC3.  
(b) Turn the ignition switch ON and hand–held tester main  
switch ON.  
Brake Pedal  
Released  
Brake Pedal  
Depressed  
CHECK:  
Read the STP signal on the hand–held tester.  
OK:  
Brake pedal is depressed: STP...ON  
Brake pedal is released: STP...OFF  
When not using hand–held tester:  
PREPARATION:  
ON  
STP  
(a) Remove the glove compartment door.  
(b) Turn the ignition switch ON.  
CHECK:  
(–)  
(+)  
Check voltage between terminal STP of the Engine and ECT  
ECU and body ground.  
OK:  
D10032  
Brakepedal  
Depressed  
Released  
Voltage  
9.0 – 14 V  
Below 1.5 V  
OK  
Check for intermittent problems.  
NG  
AVENSIS/CORONA SUP (RM781E)  
DI–104  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
3
Check harness and connector between Engine and ECT ECU and stop light  
switch (See page IN–20).  
NG  
Repair or replace harness or connector.  
OK  
Check and replace Engine and ECT ECU  
(See page IN–20).  
AVENSIS/CORONA SUP (RM781E)  
DI–105  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RW–03  
DTC  
P1725 NT Revolution Sensor Circuit Malfunction  
(Input Turbine Speed Sensor)  
CIRCUIT DESCRIPTION  
This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT)  
and the counter gear speed sensor signal (NC), the Engine and ECT ECU detects the shift timing of the gears  
and appropriately controls the engine torque and hydraulic pressure in response to various conditions, thus  
performing smooth gear shifting.  
DTC No.  
P1725  
DTCDetectingCondition  
TroubleArea  
The Engine and ECT ECU detects conditions (a), (b), (c), (d)  
and (e) continuity for 5 seconds or more.  
(1–tripdetectionlogic)  
S Open or short in input turbine (NT) speed sensor circuit  
S Input turbine (NT) speed sensor  
(a) Gear change not being performed  
(b) Gear position: 2nd, 3rd or O/D gear  
(c) Solenoid valves and neutral start switch are normal  
(d) T/M input shaft rpm: 300 rpm or less  
(e) T/M output shaft rpm: 1,000 rpm or less  
S Engine and ECT ECU  
WIRING DIAGRAM  
Engine and ECT ECU  
5
E15 NT  
2
2
G
G
+
IE2 IF2  
(RHD) (LHD)  
2
1
T8  
Input Turbine  
Speed Sensor  
11  
E15  
1
1
R
R
–
NT  
IE2 IF2  
(RHD) (LHD)  
D10176  
AVENSIS/CORONA SUP (RM781E)  
DI–106  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check resistance between terminals NT+ and NT– of Engine and ECT ECU.  
PREPARATION:  
Disconnect the connector from Engine and ECT ECU.  
CHECK:  
Check resistance between terminals NT+ and NT– of Engine  
and ECT ECU.  
OK:  
+
–
NT  
Resistance: 620 ± 60 Ω  
NT  
OK  
Check and replace the Engine and ECT ECU  
(See page IN–30).  
D10033  
NG  
2
Check input turbine speed sensor.  
PREPARATION:  
Remove the input turbine speed sensor from transaxle.  
CHECK:  
(a) Measure resistance between terminals 1 and 2 of speed  
sensor.  
(b) Check voltage between terminals 1 and 2 of the speed  
sensor when a magnet is put close to the front end of the  
speed sensor then taken away quickly.  
OK:  
(a) Resistance: 620 ± 60 Ω at 20 °C (68 °F)  
(b) Voltage is generated intermittently.  
HINT:  
Magnet  
The voltage generated is extremely low.  
NG  
Replace the input turbine speed sensor.  
Q08218  
OK  
Check and repair the harness and connector  
between Engine and ECT ECU and input tur-  
bine speed sensor (See page IN–30).  
AVENSIS/CORONA SUP (RM781E)  
DI–107  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RX–03  
DTC  
P1730 NC Revolution Sensor Circuit Malfunction  
(Counter Gear Speed Sensor)  
CIRCUIT DESCRIPTION  
This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal (NC)  
and the input turbine speed sensor signal (NT), the Engine and ECT ECU detects the shift timing of the gears  
and appropriately controls the engine torque and hydraulic pressure in response to various conditions, thus  
performing smooth gear shifting.  
DTC No.  
DTCDetectingCondition  
TroubleArea  
The Engine and ECT ECU detects conditions (a), (b), (c) and  
(d) continuity for 5 secs or more.  
(1–tripdetectionlogic)  
S Open or short in counter gear (NC) speed sensor circuit  
S Counter gear (NC) speed sensor  
P1730  
(a) IG SW: ON  
(b) Neutral start switch: Except P, N range  
(c) T/M input shaft rpm: 300 rpm or less  
(d) T/M output shaft rpm: 1,000 rpm or more  
S Engine and ECT ECU  
WIRING DIAGRAM  
Engine and ECT ECU  
4
W
+
E15 NC  
2
C18  
Counter Gear  
Speed Sensor  
1
10  
E15 NC  
B
–
D07935  
AVENSIS/CORONA SUP (RM781E)  
DI–108  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check resistance between terminals NC+ and NC– of Engine and ECT ECU.  
PREPARATION:  
Disconnect the connector from Engine and ECT ECU.  
CHECK:  
Check resistance between terminals NC+ and NC– of Engine  
and ECT ECU.  
OK:  
+
–
NC  
NC  
Resistance: 620 ± 60 Ω  
OK  
Check and replace the Engine and ECT ECU  
(See page IN–30).  
D10034  
NG  
2
Check counter gear speed sensor.  
PREPARATION:  
Remove the counter gear speed sensor from transaxle.  
CHECK:  
(a) Measure resistance between terminals 1 and 2 of speed  
sensor.  
(b) Check voltage between terminals 1 and 2 of the speed  
sensor when a magnet is put close to the front end of the  
speed sensor then taken away quickly.  
OK:  
(a) Resistance: 620 ± 60 Ω at 20 °C (68 °F)  
(b) Voltage is generated intermittently.  
HINT:  
Magnet  
The voltage generated is extremely low.  
NG  
Replace the counter gear speed sensor.  
Q08218  
OK  
Check and repair the harness and connector  
between Engine and ECT ECU and counter  
gear speed sensor (See page IN–30).  
AVENSIS/CORONA SUP (RM781E)  
DI–109  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6RZ–03  
DTC  
P1760 Linear Solenoid for Line Pressure Control  
Circuit Malfunction (SLT Solenoid Valve)  
CIRCUIT DESCRIPTION  
The throttle pressure that is applied to the primary regulator  
valve (which modulates line pressure) causes the solenoid  
valve SLT, under electronic control, to precisely and minutely  
modulate and generate line pressure according to the accelera-  
tor pedal effort, or engine power output detected.  
Line Pressure Con-  
trol Pressure  
This reduces the function of line pressure and provides smooth  
shifting characteristics.  
Upon receiving the throttle valve opening angle signal, Engine  
and ECT ECU controls the line pressure by sending a predeter-  
mined (*) duty ratio to the solenoid valve, modulating the line  
pressure, generating throttle pressure.  
Current Flow to Solenoid D02290  
(*) Duty Ratio  
ON  
The duty ratio is the ratio of the period of continuity in one cycle.  
For example, if ”A” is the period of continuity in one cycle, and  
”B” is the period of non–continuity, then  
OFF  
1 Cycle  
A
A + B  
Duty Ratio =  
x 100 (%)  
BE4056  
DTC No.  
P1760  
DTCDetectingCondition  
TroubleArea  
(a) or (b) condition below is detected 1 second or more.  
S Open or short in SLT solenoid valve circuit  
S SLT solenoid valve  
–
(a) SLT terminal:0V  
–
(b) SLT terminal:12V  
S Engine and ECT ECU  
Reference:  
Wave form between terminals SLT+ and SLT– during engine id-  
ling.  
5 V / Div.  
GND  
1 msec. / Div.  
D01875  
AVENSIS/CORONA SUP (RM781E)  
DI–110  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
WIRING DIAGRAM  
Engine and ECT ECU  
Automatic Transaxle  
2
15  
+
SLT  
O
R
+
SLT  
E1  
E14  
SLT  
Solenoid  
Valve  
7
24  
E14 SLT  
–
SLT  
G
L–W  
–
E1  
D07928  
AVENSIS/CORONA SUP (RM781E)  
DI–111  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check SLT solenoid valve.  
PREPARATION:  
2
1
(a) Jack up the vehicle.  
(b) Remove the oil pan.  
(c) Disconnect the solenoid connector.  
Check Solenoid Resistance:  
CHECK:  
Measure resistance between terminals 1 and 2 of solenoid con-  
nector.  
1
2
OK:  
Resistance: 5.0 – 5.6 Ω at 20 °C (68 °F)  
Check Solenoid Operation:  
CHECK:  
Connect positive (+) lead with an 8 – 10W bulb to terminal 1 of  
solenoid connector and negative (–) lead to terminal 2, then  
check the movement of the valve.  
OK:  
Valvemovesin  
in illustration at right.  
direction  
Whenbatterypositivevoltageisapplied.  
When battery positive voltage is cut off.  
D03445  
D03446  
D02968  
D03729  
Valvemovesin  
inillustration at left.  
direction  
NG  
Replace SLT solenoid valve.  
OK  
2
Check harness and connector between SLT solenoid valve and Engine and ECT  
ECU (See page IN–30).  
NG  
Repair or replace harness or connector.  
OK  
Replace Engine and ECT ECU.  
AVENSIS/CORONA SUP (RM781E)  
DI–112  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI4ZS–05  
DTC  
P1780 Neutral Start Switch Malfunction  
CIRCUIT DESCRIPTION  
The neutral start switch detects the shift lever position and sends signals to the Engine and ECT ECU. The  
Engine and ECT ECU receives signals (NSW, R, D 2 and L) from the neutral start switch.  
DTC No.  
DTCDetectionCondition  
TroubleArea  
When more than one of the following conditions continue for  
500 sec. or more.  
(a) P, N range input signal is ON.  
(b) R range input signal is ON.  
(c) N range input signal is ON.  
(d) L range input signal is ON.  
(e) 2 range input signal is ON.  
(h) D range input signal is ON.  
S Short in neutral start switch circuit  
S Neutral start switch  
P1780  
S Engine and ECT ECU  
When any of following conditions for 500 msec. or more in the  
Mposition.  
(a) P, N range input signal is ON.  
(b) P range input signal is ON.  
(c) N range input signal is ON.  
(d) L range input signal is ON.  
AVENSIS/CORONA SUP (RM781E)  
DI–113  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
WIRING DIAGRAM  
Engine and ECT ECU  
Neutral Start Switch  
DL 7  
10  
E14  
B–Y  
Y–G  
O
D
L
2
4
E14  
8
LL  
11  
E14  
3
2L 4  
RL 2  
9
R–L  
Center J/B  
1
3
3C  
3
3D  
R–B  
R–B  
E14 R  
Center J/B  
7
3E  
23  
E15  
20  
3D  
B–W  
6
B–W  
NSW  
20 3E  
W–B  
B–W  
Center J/B  
Instrument Panel J/B  
GAUGE  
Ignition Switch  
10  
5
10  
10  
3A  
R–L  
B–Y  
3C  
IC  
IF  
8
5
IG1  
AM1  
Instrument Panel J/B  
Instrument Panel J/B  
ST  
W–R  
1
2
6
4
R
IC  
ID  
IE  
ID  
3
4
ST2 AM2  
B–W  
Engine Room J/B  
W–R  
3
2A  
W
MAIN  
1
AM2  
6
2C  
6
2A  
2
3
1
2
1
2D  
5
A
Starter Relay  
To Starter  
1
2H  
FL  
Block  
ALT  
Instrument Panel J/B  
AM1  
*1  
*2  
W
1
2
J9 J20  
Junction Connector  
2 *  
1 *  
FL  
MAIN  
2
1
F15  
3
1
2
B–G B–G  
W
IA  
IC  
F17  
1
IJ *  
II *  
2
Battery  
*1: LHD  
*2: RHD  
D10179  
AVENSIS/CORONA SUP (RM781E)  
DI–114  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Read PNP, REVERSE, 2ND DRIVE and LOW signals.  
When using hand–held tester:  
PREPARATION:  
(a) Remove the DLC3 cover.  
(b) Connect a hand–held tester to the DLC3.  
(c) Turn the ignition switch ON and hand–held tester main  
switch ON.  
CHECK:  
Shift lever into the P, R, N, D, 2 and L positions, and read the  
PNP, REVERSE, 2ND DRIVE and LOW signals on the hand–  
held tester.  
OK:  
Shiftrange  
Signal  
2
L
2ND OFF → ON  
LOW OFF → ON  
DRIVE OFF → ON  
REVERSE OFF → ON  
PNP OFF → ON  
D
R
P, N  
When not using hand–held tester:  
PREPARATION:  
Turn the ignition switch ON.  
CHECK:  
R
L
ON  
D
Measure voltage between terminals P. R. N. D. 2 and L of En-  
gine and ECT ECU and body ground when the shift lever is  
shifted to the following positions.  
OK:  
2
NSW  
D10035  
Shiftrange  
Testerconnection  
NSW – Body ground  
R – Body ground  
D – Body ground  
2 – Body ground  
L– Body ground  
Specifiedvalue  
P, R  
R
Battery positive voltage  
*
Battery positive voltage  
Battery positive voltage  
Battery positive voltage  
Battery positive voltage  
D
2
L
HINT:  
*: The voltage will drop slightly due to lighting up of the back up  
light.  
OK  
Check and replace the Engine and ECT ECU  
(See page IN–30).  
NG  
AVENSIS/CORONA SUP (RM781E)  
DI–115  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2
Check neutral start switch.  
PREPARATION:  
(a) Jack up the vehicle.  
(b) Remove the neutral start switch.  
CHECK:  
Check continuity between each terminal shown below when the  
shift lever is moved to each position.  
5 4 3 2 1  
8 7  
9
6
Shiftrange  
Terminal No. to continuity  
P
R
N
D
2
–
6 – 9  
D06561  
2 – 3  
–
–
6 – 9  
–
3 – 7  
3 – 4  
3 – 8  
–
L
–
OK:  
There is continuity.  
NG  
Replace the neutral start switch.  
OK  
Repair or replace harness and connector between battery and neutral start switch, neu-  
tral start switch and Engine and ECT ECU (See page IN–30).  
AVENSIS/CORONA SUP (RM781E)  
DI–116  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI6SY–03  
O/D Main Switch & O/D OFF Indicator Light Circuit  
CIRCUIT DESCRIPTION  
The O/D main switch contacts go open when the switch is pushed in and go closed when it is pushed out.  
If O/D main switch is at OFF position, the O/D OFF indicator light lights up, and the Engine and ECT ECU  
prohibits shifting overdrive.  
WIRING DIAGRAM  
O/D OFF Indicator Light  
(Combination Meter)  
Engine and ECT ECU  
11  
9
8
L
L
C11  
OD2  
E13  
C11  
B–O  
L
Center J/B  
O/D Main Switch  
10  
3F  
10  
3A  
2
4
R–L  
W–B  
Center J/B  
Instrument Panel J/B  
13  
5
IC  
13  
3A  
GAUGE  
10  
IF  
3C  
B–Y  
W–B  
Ignition Switch  
8
5
AM1  
IG1  
Instrument  
Panel  
4
IE  
W
J/B  
Instrument Panel J/B  
2
IA  
AM1  
3
IC  
IC 1  
1
W
2
W–B  
FL  
Block  
1
2
2 *  
1 *  
FL  
MAIN  
1
ALT  
B–G  
A
F17  
F15  
J1 (LHD)  
J27 (RHD)  
Junction Connector  
*1: LHD  
*2: RHD  
Battery  
II (LHD)  
IJ (RHD)  
D10177  
AVENSIS/CORONA SUP (RM781E)  
DI–117  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
O/D OFF indicator light does not light up  
1
Check O/D main switch.  
PREPARATION:  
Disconnect the O/D main switch connector.  
CHECK:  
Check continuity between terminals 5 and 6 of O/D main switch  
connector.  
OK:  
O/D main switch  
Resistance  
∞ Ω (open)  
ON  
Q08078  
OFF  
0 Ω (continuity)  
NG  
Replace the O/D main switch.  
OK  
2
Check and replace combination meter (See page BE–1).  
NG  
Replace the combination meter.  
OK  
AVENSIS/CORONA SUP (RM781E)  
DI–118  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
3
Check OVERDRIVE CUT SW2 signal.  
When using hand–held tester:  
PREPARATION:  
(a) Connect a hand–held tester to the DLC3.  
(b) Turn the ignition switch ON and hand–held tester main  
switch ON.  
CHECK:  
Read the OVERDRIVE CUT SW2 signal on the hand–held tes-  
ter.  
OK:  
O/D main switch condition  
Pushed in  
OVERDRIVE CUT SW2 signal  
OFF  
ON  
Pushed out  
When not using hand–held tester:  
PREPARATION:  
ON  
OD2  
Turn the ignition switch ON.  
CHECK:  
Check voltage between terminal OD2 of Engine and ECT ECU  
and body ground.  
OK:  
O/D main switch  
Voltage  
Below 1.0 V  
10 – 14 V  
D10036  
OFF  
ON  
OK  
Check and replace the Engine and ECT ECU  
(See page IN–30).  
NG  
AVENSIS/CORONA SUP (RM781E)  
DI–119  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
4
Check harness and connector between O/D OFF indicator light and Engine and  
ECT ECU (See page IN–20).  
PREPARATION:  
Disconnect the connector of Engine and ECT ECU and the connector of the combination meter.  
CHECK:  
Measure the continuity between the connector of Engine and ECT ECU and the connector of the combina-  
tion meter.  
OK:  
Continuity  
NG  
Repair or replace the harness or connector.  
OK  
Repair or replace the wire harness or con-  
nectors between the connector of Engine  
and ECT ECU and body Ground.  
AVENSIS/CORONA SUP (RM781E)  
DI–120  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
O/D OFF indicator light remains ON  
1
Check O/D main switch.  
PREPARATION:  
Disconnect the O/D main switch connector.  
CHECK:  
Check continuity between terminals 1 and 2 of O/D main switch  
connector.  
OK:  
O/D main switch  
Resistance  
∞ Ω (open)  
ON  
Q08078  
OFF  
0 Ω (continuity)  
NG  
Replace the O/D main switch.  
OK  
2
Check harness and connector between O/D OFF indicator light and O/D main  
switch, O/D OFF indicator light and Engine and ECT ECU (See page IN–30).  
NG  
Repair or replace the harness or connector.  
OK  
Check and replace the Engine and ECT ECU  
(See page IN–20).  
AVENSIS/CORONA SUP (RM781E)  
DI–121  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI336–04  
Pattern Select Switch Circuit  
CIRCUIT DESCRIPTION  
The Engine & ECT ECU memory contains the shift programs for the NORMAL, POWER and SNOW (w/  
SNOW mode) patterns, 2 range, L range and the lock–up patterns. By following the programs corresponding  
to the signals from the pattern select switch, the neutral start switch and other various sensors, the Engine  
& ECT ECT switches the solenoid valves ON and OFF, and controls the transaxle gear change and the lock–  
up clutch operation.  
WIRING DIAGRAM  
Pattern Select Switch  
NORM  
Engine and ECT ECU  
19  
5
3
R–L  
P–B  
SNWI  
E5  
E5  
E14  
SNOW  
PWR  
Center J/B  
2
E5  
9
15  
3D  
15  
3B  
P
P
PWR  
E14  
15 3F  
Combination Meter  
P
22  
9
C11  
7
B–O  
R–Y  
E13 SNWL  
C10  
3F 10  
3F 1  
10 3B  
22  
C11  
ECT SNOW  
ECT PWR  
Center J/B  
14  
C10  
24  
C10  
W–B  
W–B  
10 3A  
1
C10  
B–O  
R–L  
Instrument Panel J/B  
Ignition Switch  
W–B  
GAUGE  
10  
IF  
5
IC  
B–Y  
5
8
IG1  
AM1  
1
J1*  
2
W
J27*  
Junction  
Connector  
FL  
Block  
Instrument Panel J/B  
1
1
II*  
FL  
MAIN  
2 *  
1 *  
Battery  
2
2
AM1  
3
2
IJ*  
1
F15  
ALT  
2
1
W
B–G  
IC  
IA  
F17  
*1: LHD  
*2: RHD  
D10184  
AVENSIS/CORONA SUP (RM781E)  
DI–122  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check PATTERN SEL SW signal.  
When using hand–held tester:  
PREPARATION:  
(a) Remove the DLC3 cover.  
(b) Connect a hand–held tester to the DLC3.  
(c) Turn the ignition switch ON and hand–held tester main  
switch ON.  
CHECK:  
Read the PATTERN SEL SW signal on the hand–held tester.  
OK:  
Pattern select switch  
POWER  
PATTERN SEL SW signal  
ON  
OFF  
OFF  
NORM  
SNOW  
When not using hand–held tester:  
PREPARATION:  
Turn the ignition switch ON.  
CHECK:  
ON  
PWR  
SNWI  
Measure voltage between terminal each of PWR, SNWI of En-  
gine & ECT ECU and body ground when the pattern select  
switch is set to the PWR (POWER), NORM (NORMAL) or  
SNOW (SNOW) position.  
OK:  
D10188  
Switchposition  
PWR  
Testerconnection  
PWR – Body ground  
SNWI – Body ground  
PWR – Body ground  
SNWI – Body ground  
PWR – Body ground  
SNWI – Body ground  
Specifiedcondition  
9 – 14 V  
Below 1.5 V  
Below 1.5 V  
Below 1.5 V  
Below 1.5 V  
9 – 14 V  
NORM  
SNOW  
HINT:  
The Engine & ECT ECU uses the normal pattern signal if the  
PWR and SNWI signals are not input.  
OK  
Proceed to next circuit inspection shown in  
symptom problems table (See page DI–79).  
NG  
AVENSIS/CORONA SUP (RM781E)  
DI–123  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2
Check pattern select switch  
PREPARATION:  
Disconnect the pattern select switch connector.  
CHECK:  
2
Check continuity between terminals 2 and 3 (PWR, NORM), 3  
and 5 (SNOW) of pattern select switch connector when the se-  
lect switch is set to PWR, NORM or SNOW position.  
OK:  
3
5
Switchposition  
PWR  
Testerconnection  
2 – 3  
Specifiedcondition  
Continuity  
D10186  
NORM  
2 – 3, 3 – 5  
3 – 5  
No continuity  
Continuity  
SNOW  
NG  
Replace the pattern select switch.  
OK  
3
Check harness and connector between battery and pattern select switch, pattern  
select switch and Engine & ECT ECU (See page IN–30).  
NG  
Repair or replace the harness or connector.  
OK  
Check and replace the Engine & ECT ECU  
(See page IN–30).  
AVENSIS/CORONA SUP (RM781E)  
DI–124  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
DI703–03  
Kick–down Switch Circuit (LHD)  
CIRCUIT DESCRIPTION  
The kick–down switch is turned ON when the accelerator pedal is depressed beyond the full throttle opening  
and sends signals to Engine and ECT ECU.  
When the kick–down switch is turned ON, the Engine and ECT ECU controls gear shifting according to the  
programmed shift diagrams.  
If a short circuit develops in the kick–down switch, the Engine and ECT ECU disregards the kick–down sig-  
nals and controls shifting at the normal shift points.  
WIRING DIAGRAM  
Engine and ECT ECU  
Kick–down  
Switch  
17  
E13 KD  
W–B  
1
2
Instrument Panel J/B  
1
IC  
4
IE  
W–B  
J1 (LHD)  
A
J27 (RHD)  
Junction  
connector  
II (LHD)  
IJ (RHD)  
D10178  
AVENSIS/CORONA SUP (RM781E)  
DI–125  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
INSPECTION PROCEDURE  
1
Check KICK DOWN SW signal.  
When using hand–held tester:  
PREPARATION:  
(a) Remove the DLC3 cover.  
(b) Connect a hand–held tester to the DLC3.  
(c) Turn the ignition switch ON and hand–held tester main  
switch ON.  
CHECK:  
Read the KICK DOWN SW signal on the hand–held tester.  
OK:  
KICK DOWN  
AcceleratorPedal  
SW signal  
Fully depressed (kick–down SW is ON)  
Released (kick–down SW is OFF)  
When not using hand–held tester:  
PREPARATION:  
Turn the ignition switch ON.  
CHECK:  
ON  
OFF  
ON  
KD  
Measure voltage between terminal KD of Engine and ECT ECU  
connector and body ground when accelerator pedal is fully de-  
pressed or not.  
OK:  
D10037  
AcceleratorPedal  
Fully depressed (kick–down SW is ON)  
Released (kick–down SW is OFF)  
Voltage  
Below 1 V  
10 – 14 V  
OK  
Proceed to next circuit inspection shown in  
problem symptoms table (See page DI–79).  
NG  
AVENSIS/CORONA SUP (RM781E)  
DI–126  
DIAGNOSTICS  
–
AUTOMATIC TRANSAXLE(U240E)  
2
Check kick–down switch.  
PREPARATION:  
Disconnect the kick–down switch connector.  
CHECK:  
Check continuity at each terminal of kick–down switch connec-  
tor.  
OK:  
Kick–down Switch  
Specifiedcontinuity  
Continuity  
ON  
D07967  
OFF  
No continuity  
NG  
Replace kick–down switch.  
OK  
3
Check harness and connector between Engine and ECT ECU and kick–down  
switch, kick–down switch and body ground (See page IN–30).  
NG  
Repair or replace the harness or connector.  
OK  
Check and replace Engine and ECT ECU (See  
page IN–30).  
AVENSIS/CORONA SUP (RM781E)  

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