1998-2003 Suzuki Alto 4 Door Engine and Emission Control System -> Diagnosis User Manual
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Engine and Emission Control System -> Diagnosis for Your Suzuki Alto 4 Door Fifth Generation (1998-2003)

DIAGNOSIS
The engine and emission control system in this vehicle are con-
trolled by ECM. ECM has an On-Board Diagnostic system which
detects a malfunction in this system.
When diagnosing troubles, be sure to have full understanding of
the outline of ON-BOARD DIAGNOSTIC SYSTEM and each item
in PRECAUTION IN DIAGNOSING TROUBLE and execute diag-
nosis according to ENGINE DIAGNOSTIC FLOW TABLE in SEC-
TION 6.
ON-BOARD DIAGNOSTIC SYSTEM
ECM performs on-board diagnosis (self-diagnosis) on the system
and operates malfunction indicator lamp as follows.
D Malfunction indicator lamp lights when the ignition switch is
turned ON (but the engine at stop) regardless of the condition of
engine and emission control system. This is only to check the
malfunction indicator lamp bulb and its circuit.
D If the areas monitored by ECM is free from any trouble after the
engine start (while engine is running), malfunction indicator
lamp turns OFF.
D When ECM detects a trouble which has occurred in the areas,it
makes malfunction indicator lamp turn ON while the engine is
running to warn the driver of such occurrence of trouble and at
the same time it stores the exact trouble area in ECM back-up
memory.
PRECAUTIONS IN DIAGNOSING TROUBLES
D Before identifying diagnostic trouble code, don’t disconnect cou-
plers from ECM, battery cable from battery, ECM ground wire
harness from engine. Such disconnection will erase memorized
trouble in ECM memory.
D Be sure to read PRECAUTIONS FOR ELECTRICAL CIRCUIT
SERVICE in SECTION 0A before inspection and observe what
is written there.
D ECM replacement
When substituting a known-good ECM, check for following
conditions. Neglecting this check may cause damage to known-
good ECM.
– Resistance value of all relays, actuators is as specified re-
spectively.
– TP sensor and MAP sensor are in good condition and none
of power circuits of these sensors is shorted to ground.
6E1-10 ENGINE AND EMISSION CONTROL SYSTEM
MALFUNCTION INDICATOR LAMP (MIL)
CHECK
1) Turn ON ignition switch (but engine at stop) and check that mal-
function indicator lamp lights up.
If lamp does not light up, go to DIAGNOSTIC FLOW TABLE A-1
in this section.
If lamp flashes, go to DIAGNOSTIC FLOW TABLE A-2 in this
section.
2) Start engine and check that malfunction indicator lamp turns
OFF.
If lamp remains ON, go to DTC CHECK NOT USING SUZUKI
SCAN TOOL in this section.
DIAGNOSTIC TROUBLE CODE (DTC) CHECK
[Using SUZUKI scan tool]
1) Check malfunction indicator lamp referring to MALFUNCTION
INDICATOR LAMP (MIL) CHECK in this section.
2) Turn ignition switch OFF.
3) After setting cartridge to SUZUKI scan tool, connect it to data
link connector (DLC) (1) located on underside of instrument
panel at driver’s seat side.
Special Tool
(A): 09931-76011 (SUZUKI scan tool)
(B): Mass storage cartridge
(C): 09931-76030 (16/14-pin DLC adapter)
4) Turn ignition switch ON.
5) Read DTC according to instructions displayed on SUZUKI scan
tool and print it or write it down. Refer to SUZUKI scan tool oper-
ator’s manual for further details.
If communication between SUZUKI scan tool and ECM is not
possible, check if SUZUKI scan tool is communicable by con-
necting it to ECM in another vehicle. If communication is pos-
sible in this case, SUZUKI scan tool is in good condition. Then
check data link connector and serial data line (circuit) in the ve-
hicle with which communication was not possible.
6) After completing the check, turn ignition switch OFF and discon-
nect SUZUKI scan tool from data link connector (DLC).
ENGINE AND EMISSION CONTROL SYSTEM 6E1-11
[Not using SUZUKI scan tool]
1) Check malfunction indicator lamp (1) referring to MALFUNC-
TION INDICATOR LAMP (MIL) CHECK in this section.
2) Using service wire, ground diagnosis switch terminal in monitor
coupler (2).
3) Read DTC from flashing pattern of malfunction indicator lamp.
Refer to DTC TABLE.
If lamp remains ON, go to Table A-3 in this section.
NOTE:
D If abnormality or malfunction lies in two or more areas,
malfunction indicator lamp indicates applicable codes
three times each.
And flashing of these codes is repeated as long as diag-
nosis terminal (3) is grounded and ignition switch is held
at ON position.
D Take a note of diagnostic trouble code indicated first.
4) After completing the check, turn ignition switch OFF and discon-
nect service wire from monitor connector.
6E1-12 ENGINE AND EMISSION CONTROL SYSTEM
EXAMPLE: When throttle position sensor is defective (Code No. 13)
DIAGNOSTIC TROUBLE CODE (DTC)
CLEARANCE
[Using SUZUKI scan tool]
1) Turn ignition switch OFF.
2) Connect SUZUKI scan tool to data link connector (DLC) in the
same manner as when making this connection for DTC check.
3) Turn ignition switch ON.
4) Erase DTC according to instructions displayed on SUZUKI
scan tool.
Refer to SUZUKI scan tool operator’s manual for further details.
5) After completing the clearance, turn ignition switch OFF and
disconnect SUZUKI scan tool from data link connector (DLC).
[Not using SUZUKI scan tool]
1) Turn OFF ignition switch.
2) Disconnect battery negative cable for specified time below to
erase diagnostic trouble code stored in ECM memory and re-
connect it.
Time required to erase DTC:
ENGINE AND EMISSION CONTROL SYSTEM 6E1-13
Ambient temperature Time to cut power to ECM
Over 0_C (32_F) 30 sec. or longer
Under 0_C (32_F)
Not specifiable.
Select a place with higher than
0_C (32_F) temperature.
6E1-14 ENGINE AND EMISSION CONTROL SYSTEM
DIAGNOSTIC TROUBLE CODE (DTC) TABLE
DIAGNOSTIC
TROUBLE
CODE NO.
MALFUNCTION INDICATOR
DIAGNOSTIC ITEM
DIAGNOSIS
SUZUKI
SCAN
TOOL
MIL
LAMP FLASHING PATTERN
DIAGNOSTIC
ITEM
DIAGNOSIS
P0105 11
Manifold absolute pressure
sensor
P0120 13 Throttle position sensor
P0130 14 Oxygen sensor
P0340 15 Camshaft position sensor
Diagnose trouble according to DIAG-
NOSTIC FLOW TABLE corresponding to
each code No.
P0500 16 Vehicle speed sensor
P0110 18 Intake air temperature sensor
P0115 19
Engine coolant temperature
sensor
––– 12 Normal
This code appears when none of the oth-
er codes (above codes) are identified.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-15
A-1 MALFUNCTION INDICATOR LAMP CIRCUIT CHECK
(MALFUNCTION INDICATOR LAMP DOES NOT LIGHT AT IGNITION SWITCH ON.)
1. Battery positive voltage
2. Blank
3. Ignition switch
4. Fuse
5. Malfunction indicator lamp
6. Monitor connector
7. ECM
8. Main relay
STEP
ACTION YES NO
1
Test switch terminal circuit check:
1) With the ignition switch ON position, check
voltage between E34-7 terminal of ECM
coupler and ground.
Is voltage 4-5V?
Go to Step 2. “P/W” wire (test switch terminal)
shorted to ground circuit.
If OK, substitute a known good
ECM and recheck.
2
MIL bulb and circuit check:
1) Using service wire, ground E32-317 termi-
nal of ECM coupler.
Does MIL turn ON at ignition ON position?
Go to TABLE A-4. MIL bulb burned out.
“IG-COIL METER” fuse(s)
blown.
Ignition switch malfunction.
“V/Y” wire open.
“B/W” wire open.
Fig. for STEP 1
1. ECM coupler disconnected
2. Body ground
3. Service wire
Fig. for STEP 2
1. “IG-COIL METER” fuse
6E1-16 ENGINE AND EMISSION CONTROL SYSTEM
A-2 MALFUNCTION INDICATOR LAMP CIRCUIT CHECK
(MALFUNCTION INDICATOR LAMP FLASHES AT IGNITION SWITCH ON.)
1. Battery positive voltage
2. Blank
3. Ignition switch
4. Fuse
5. Malfunction indicator lamp
6. Monitor connector
7. ECM
8. Main relay
STEP
ACTION YES NO
1
MIL Flashing Pattern Check
1) Turn ignition switch ON.
Does lamp flashing pattern indicate diagnostic trouble
code?
Go to Step 2. Substitute a known-good
ECM and recheck.
2
Diag. Switch Circuit Check
Is diag. switch terminal connected to ground via ser-
vice wire?
System is in good
condition.
“V/G” circuit shorted to
ground. If circuit is OK,
substitute a known-good
ECM and recheck.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-17
A-3 MALFUNCTION INDICATOR LAMP CIRCUIT CHECK
(MALFUNCTION INDICATOR LAMP DOES NOT FLASH OR JUST REMAINS ON EVEN WITH GROUND-
ING DIAGNOSIS SWITCH TERMINAL.)
1. Battery positive voltage
2. Blank
3. Ignition switch
4. Fuse
5. Malfunction indicator lamp
6. Monitor connector
7. ECM
8. Main relay
STEP
ACTION YES NO
1
MIL Circuit Check
1) Turn ignition switch OFF and disconnect connec-
tors from ECM.
Does MIL turn ON at ignition switch ON?
“V/Y” circuit shorted
to ground.
Go to Step 2.
2
ECM Connection Check
1) Turn ignition switch OFF.
Is connector (E34-8 connection) connected to ECM
properly?
Go to Step 3. Poor connector connection.
3
Diag. Switch Terminal Circuit Check
1) Connect connectors to ECM.
2) Using service wire, ground E34-8 terminal with
connectors connected to ECM.
3) Turn ignition switch ON.
Does MIL flash?
“V/G” or “Bl/B” cir-
cuit open.
Substitute a known-good
ECM and recheck.
Fig. for STEP 3
1. ECM coupler connected
2. Body ground
3. Service wire
6E1-18 ENGINE AND EMISSION CONTROL SYSTEM
A-4 ECM POWER AND GROUND CIRCUIT CHECK (Page 1 of 2)
(MALFUNCTION INDICATOR LAMP DOES NOT LIGHT AT IGNITION SWITCH ON AND ENGINE DOES
NOT START THOUGH IT IS CRANKED UP.)
1. Battery positive voltage
2. Blank
3. Ignition switch
4. Fuse
5. Malfunction indicator lamp
6. Monitor connector
7. ECM
8. Main relay
STEP
ACTION YES NO
1
Main Relay Operating Sound Check
Is operating sound of main relay heard at ignition switch ON?
Go to Step 5. Go to Step 2.
2
Fuse Check
Is main “FI” fuse in good condition?
Go to Step 3. Check for short in
circuits connected
to this fuse.
3
Main Relay Check
1) Turn OFF ignition switch and remove main relay.
2) Check for proper connection to main relay at terminal “a” and
“b”.
3) If OK, check main relay for resistance and operation referring
to MAIN RELAY INSPECTION in this section.
Is check result satisfactory?
Go to Step 4. Replace main relay.
4
ECM Power Circuit Check
1) Turn OFF ignition switch, disconnect connectors from ECM
and install main relay.
2) Check for proper connection to ECM at terminals 302, 315
and 319 of E32.
3) If OK, then measure voltage between terminal E32-319 and
ground with ignition switch ON.
Is each voltage 10 – 14 V?
Go to Step 5. “V/R” or “B/Y” cir-
cuit open.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-19
A-4 ECM POWER AND GROUND CIRCUIT CHECK (Page 2 of 2)
STEP
ACTION YES NO
5
ECM Power Circuit Check
1) Using service wire, ground terminal E32-319 and
measure voltage between terminal E32-302
(E32-315) and ground at ignition switch ON.
Is it 10 – 14 V?
Check ground circuits
“Bl/B” and “B” for open.
If OK, then substitute a
known-good ECM and re-
check.
Go to Step 6.
6
Is operating sound of main relay heard in Step 1? Go to Step 7. “B/Y” or “B/R” wire
open.
7
Main Relay Check
1) Check main relay according to procedure in Step
3.
Is main relay in good condition?
“B/Y” or “B/R” wire open. Replace main relay.
Fig. for STEP 2
Fig. for STEP 3
1. “FI” fuse
1. ECM coupler
2. Body ground
Fig. for STEP 4
1. Main relay
6E1-20 ENGINE AND EMISSION CONTROL SYSTEM
CODE NO.11 (P0105) MAP SENSOR CIRCUIT
(SIGNAL VOLTAGE LOW, HIGH OR PERFORMANCE PROBLEM)
NOTE:
When Code No.11 (P0105), 13 (P0120), 18 (P0110) and
19 (P0115) are indicated together, it is possible that
“B/G” wire is open or “E34-22” terminal connections
are poor.
1. ECM
2. ECM coupler
3. MAP sensor
4. MAP sensor coupler
5. To TP sensor
6. To other sensors
STEP ACTION YES NO
1
1) Disconnect MAP sensor coupler with igni-
tion switch OFF.
2) Check voltage between “c” wire terminal of
MAP sensor coupler and ground with igni-
tion switch ON.
Is voltage about 4 – 5 V?
Go to Step 2. D “Lbl” wire open or short.
D Poor “E33-201” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
2
1) Check voltage between “a” wire terminal of
MAP sensor coupler and ground with igni-
tion switch ON.
Is voltage about 4 – 5 V?
Go to Step 3. D “Lg/R” wire open or short.
D Poor “E33-205” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
3
1) Connect “a” and “b” wire terminals of MAP
sensor coupler using service wire.
2) Check voltage between “Lg/R” wire termi-
nal of MAP sensor coupler and ground.
Is voltage about 0 V?
Go to Step 4. D “B/G” wire open.
D Poor “E34-22” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
4
1) Remove MAP sensor.
2) Visually inspect air pressure inlet passage
of MAP sensor for clogging.
Is there any blockage?
Clean air passage or
replace as necessary.
Go to Step 5.
5
1) Perform MAP SENSOR INSPECTION in
this section.
Is MAP sensor in good condition?
Poor connection of
MAP sensor coupler
terminals.
If connection is OK,
substitute a known-
good ECM and re-
check.
Faulty MAP sensor.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-21
Fig. for STEP 1 Fig. for STEP 2 Fig. for STEP 3
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
6E1-22 ENGINE AND EMISSION CONTROL SYSTEM
CODE NO.13 (P0120) TP SENSOR CIRCUIT
(SIGNAL VOLTAGE HIGH OR LOW)
1. ECM
2. ECM coupler
3. TP sensor
4. TP sensor coupler
5. To MAP sensor
6. To other sensors
NOTE:
When Code No.11 (P0105), 13 (P0120), 18 (P0110) and
19 (P0115) are indicated together, it is possible that
“B/G” wire is open or “E34-22” terminal connection are
poor.
STEP
ACTION YES NO
1
1) Disconnect TP sensor coupler with ignition
switch OFF.
2) Check voltage between “a” wire terminal of
TP sensor coupler and ground with ignition
switch ON.
Is voltage about 4 – 5 V?
Go to Step 2. D “Lbl” wire open or short.
D Poor “E33-201” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
2
1) Check voltage between “b” wire terminal of
TP sensor coupler and ground with ignition
switch ON.
Is voltage about 4 – 5 V?
Go to Step 3. D “Gr” wire open or short.
D Poor “E33-206” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
3
1) Connect “b” and “c” wire terminal of TP
sensor coupler using service wire.
2) Check voltage between “b” wire terminal of
TP sensor coupler and ground with ignition
switch ON.
Is voltage about 0 V?
Go to Step 4. D “B/G” wire open.
D Poor “E34-22” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
4
1) Perform TP SENSOR INSPECTION in this
section.
Is TP sensor in good condition?
Poor connection of TP
sensor coupler termi-
nals.
If connection is OK,
substitute a known-
good ECM and re-
check.
Faulty TP sensor.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-23
Fig. for STEP 1 Fig. for STEP 2 Fig. for STEP 3
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
6E1-24 ENGINE AND EMISSION CONTROL SYSTEM
CODE NO.14 (P0130) OXYGEN SENSOR CIRCUIT
(SIGNAL VOLTAGE DOESN’T CHANGE)
NOTE:
D Before diagnosing trouble according to flow table
given below, check to make sure that following sys-
tem and parts other than Electronic Fuel Injection
system are in good condition.
– Air cleaner (clogged)
– Vacuum leaks (air inhaling)
– Spark plugs (contamination, gap)
– High-tension cords (crack, deterioration)
– Ignition timing
– Engine compression
– Any other system and parts which might affect A/ F
mixture or combustion.
D If code No.14 (P0130) and another code No. are indi-
cated together, the latter has priority. Therefore,
check and correct what is represented by that code
No. first and then proceed to the following check.
D Be sure to use a voltmeter with high impedance
(MW /V minimum) or digital type voltmeter for accu-
rate measurement.
1. ECM
2. Oxygen sensor
3. Coupler
STEP
ACTION YES NO
1
1) Warm up engine to normal operat-
ing temperature.
2) Connect voltmeter between
E33-213 terminal of ECM coupler
and body ground.
3) Maintain engine speed at 2000 rpm
and after 60 seconds, check volt-
meter.
Does the voltage deflect between
above and below 0.45 V repeatedly?
Oxygen sensor and its circuit (closed
loop system, A/F ratio feed back sys-
tem) are in good condition.
Intermittent trouble or faulty ECM.
Recheck, referring to INTERMITTENT
AND POOR CONNECTION in SEC-
TION 0A.
Go to Step 2.
2
Does the voltage remain unchanged at
0.45 V above?
“W” circuit shorted to power circuit or
rich A/F mixture.
If circuit is OK, check MAP sensor,
ECT sensor, fuel pressure, injectors
and their circuit. If all above are OK,
check ECM and its circuit.
Go to Step 3.
3
1) Maintain engine speed at 2000 rpm
for 60 seconds.
2) Check voltmeter while repeating
racing engine.
Does it indicate 0.45 V or more even
once?
Poor E33-213 connection or lean A/F
mixture.
If connection is OK, check MAP sen-
sor, ECT sensor, fuel pressure, injec-
tors and their circuit.
If all above are OK, check ECM and its
circuit.
“W” circuit open/short
or oxygen sensor mal-
function.
If wire and connection
are OK, replace oxy-
gen sensor and re-
check.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-25
Fig. for STEP 1
1. ECM coupler connected
2. Body ground
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
6E1-26 ENGINE AND EMISSION CONTROL SYSTEM
CODE NO.15 (P0340) CMP SENSOR CIRCUIT
(SENSOR SIGNAL NOT INPUTTED FOR 2 SECONDS AT ENGINE CRANKING)
1. ECM
2. CMP sensor
3. Rotor
4. CMP sensor coupler
NOTE:
If starter circuit is open (i.e., start signal circuit is OK but starter fails to run), this DTC is stored in memory
at starter switch ON, even through CMP sensor is in good condition.
When starter motor fails to run and this DTC appears, check starter circuit first.
STEP
ACTION YES NO
1
1) Disconnect couplers from ECM.
2) Measure resistance between “E33-203”
and “E33-211” terminals of ECM coupler.
CMP sensor resistance: 185 – 275 W
at –10 – 50 5C (14 – 122 5F)
3) Measure resistance between “E33-203” ter-
minal of ECM coupler and ground.
Insulation resistance: 1 MW or more
Were measured resistance values in above 2)
and 3) as specified?
Go to Step 2. D “Bl” wire open or short.
D “B/W” wire open or
short.
D Poor terminal connec-
tion of CMP sensor cou-
pler.
If wire and connection are
OK, replace CMP sensor.
2
1) Check CMP sensor referring to Section 6F.
Is it in good condition?
D Poor “E33-203” or
“E33-211” terminal con-
nection of ECM coupler.
If connection is OK,
substitute a known-good
ECM and recheck.
Faulty CMP sensor.
Fig. for STEP 1
1. ECM coupler disconnected
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-27
CODE NO.16 (P0500) VSS CIRCUIT
(VSS SIGNAL NOT INPUTTED ALTHOUGH FUEL IS KEPT CUT AT LOWER THAN
4000 R/MIN. FOR LONGER THAN 4 SECONDS)
1. ECM
2. Speedometer
3. Meter coupler (G01)
STEP
ACTION YES NO
1
Does speedometer indicate vehicle
speed?
D “V” wire open.
D Poor “E33–204” connec-
tion.
If OK, substitute a known-
good ECM and recheck.
Broken speed meter cable.
If if it OK, go to Step 2.
2
1) Disconnect ECM coupler with ignition
switch at OFF position.
2) Connect ohmmeter between E33-204
terminal of ECM coupler and body
ground.
3) Hoist front end of car and lock front
right tire.
4) Turn front left tire slowly. Does ohm-
meter indicator deflect between 0 and
R a few times while tire is turned one
revolution?
Poor E33-204 connection. If
connection is OK, intermit-
tent trouble or faulty ECM.
Recheck referring to IN-
TERMITTENT TROUBLE.
Go to Step 3.
3
1) Remove combination meter.
2) Check speed sensor referring to VE-
HICLE SPEED SENSOR (VSS) IN-
SPECTION under ON-VEHICLE SER-
VICE.
Is it good condition?
Faulty speedometer. “V” wire open, “B/Bl” wire
open, poor coupler-to-meter
connection or poor “B/Bl” wire
ground.
If OK, substitute a known-
good ECM and recheck.
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
6E1-28 ENGINE AND EMISSION CONTROL SYSTEM
CODE NO.18 (P0110) IAT SENSOR CIRCUIT
(SIGNAL VOLTAGE HIGH OR LOW)
1. ECM
2. IAT sensor
3. IAT sensor coupler
4. To other sensors
NOTE:
When Code No.11 (P0105), 13 (P0120), 18 (P0110) and
19 (P0115) are indicated together, it is possible that
“B/G” wire is open or “C52-9” terminal connections
are poor.
STEP
ACTION YES NO
1
1) Disconnect IAT sensor coupler with ignition
switch OFF.
2) Check voltage between “Lg/W” wire termi-
nal of IAT sensor coupler and ground with
ignition switch ON.
Is voltage about 4 – 5 V?
Go to Step 2. D “Lg/W” wire open or short.
D Poor “E33-214” connection.
2
1) Connect IAT sensor coupler terminals using
service wire.
2) Check voltage between “Lg/W” wire termi-
nal of IAT sensor coupler and ground with
ignition switch ON.
Is voltage 0.15 V or less?
Go to Step 3. “B/G” wire open or poor
“E34-22” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
3
1) Perform IAT SENSOR INSPECTION in this
section.
Is IAT sensor in good condition?
Poor connection of IAT
sensor coupler termi-
nals.
If connection is OK,
substitute a known-
good ECM and re-
check.
Faulty IAT sensor.
Fig. for STEP 1 Fig. for STEP 2
1. IAT sensor coupler disconnected
2. Engine ground
1. IAT sensor coupler disconnected
2. Service wire
3. Engine ground
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-29
CODE NO.19 (P0115) ECT SENSOR CIRCUIT
(SIGNAL VOLTAGE HIGH OR LOW)
1. ECM
2. ECT sensor
3. ECT sensor coupler
4. To other sensors
5. To combination meter
NOTE:
When Code No.11 (P0105), 13 (P0120), 18 (P0110)
and 19 (P0115) are indicated together, it is pos-
sible that “B/G” wire is open or “E34-22” terminal
connection is poor.
STEP
ACTION YES NO
1
1) Disconnect ECT sensor coupler with ignition
switch OFF.
2) Check voltage between “Lg/B” wire terminal
of ECT sensor coupler and ground with igni-
tion switch ON.
Is voltage about 4 – 5 V?
Go to Step 2. D “Lg/W” wire open or short.
D Poor “C52-8” connection.
2
1) Connect ECT sensor couple terminals using
service wire.
2) Check voltage between “Lg/B” wire terminal
of ECT sensor coupler and ground with igni-
tion switch ON.
Is voltage 0.15 V or less?
Go to Step 3. “B/G” wire open or poor
“C51-22” connection.
If wire and connection are OK,
substitute a known-good ECM
and recheck.
3
1) Perform ECT SENSOR INSPECTION in this
section.
Is ECT sensor in good condition?
Poor connection of
ECT sensor coupler
terminals.
If connection is OK,
substitute a known-
good ECM and re-
check.
Faulty ECT sensor.
Fig. for STEP 1 Fig. for STEP 2
1. ECT sensor coupler disconnected
2. Engine ground
1. ECT sensor coupler disconnected
2. Service wire
3. Engine ground
NOTE:
Upon completion of inspection and repair work, perform DTC Confirmation Procedure, referring to page
6E1-30 to confirm that the trouble has been corrected.
6E1-30 ENGINE AND EMISSION CONTROL SYSTEM
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
WARNING:
D When performing a road test, select a safe place where there is not traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
D Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Clear DTC stored in ECM memory referring to DTC CLEARANCE in this section.
2) Perform DTC confirmation test under the following conditions.
3) Check DTC referring to DTC CHECK in this section.
Test Condition for Code No. 13 (P0120), 18 (P0110), 19 (P0115)
Turn ignition switch ON.
Test Condition for Code No. 15 (P0340)
Crank engine for 3 sec.
Driving Test Condition for Code No. 16 (P0500)
1) Start engine and warm up engine to normal operating
temperature.
2) Increase engine speed to 4,000 r/min. in 3rd gear.
3) Release accelerator pedal and with engine brake applied,
keep vehicle coasting for 5 to 8 seconds till engine speed
reaches 2,000 r/min.
4) Repeat above steps 2) and 3) 3 times or more.
5) Stop vehicle.
Driving Test Condition for Code No. 14 (P0130)
1) Start engine and warm up engine to normal operating
temperature.
2) Increase vehicle speed to 31 to 37 mile/h (50 – 60
km/h) in 5th gear.
3) Keep driving at above vehicle speed for 25 to 30 se-
conds.
4) Release accelerator pedal and with engine brake ap-
plied, decrease vehicle speed to about 18 mile/h (30
km/h).
5) Repeat above steps 2) to 4) 3 times or more.
6) Stop vehicle.
NOTE:
If the above driving test can not be performed, check oxygen sensor for voltage referring to Step 1 and
2 of Code No. 14 (P0130) Diag. Flow Table and confirm that oxygen sensor and its circuit (Closed Loop
System) are in good condition.
Test Condition for Code No. 11 (P0105)
1) Start engine.
2) Maintain engine speed at 2000RPM for 5 seconds.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-31
B-1 FUEL PUMP AND ITS CIRCUIT CHECK
1. ECM
2. Fuel pump relay
3. Fuel pump
4. Main relay
5. Ignition switch
STEP
ACTION YES NO
1 Is fuel pump heard to operate 2 se-
conds after ignition switch ON?
Fuel pump and its circuit are in good
condition.
Go to Step 2.
2 1) Remove fuel pump relay from relay
box with ignition switch OFF.
2) Connect two terminals (a and b) of
relay connector as shown in figure
using service wire.
Is fuel pump heard to operate with
ignition switch ON?
Go to Step 3. “B/R” or “P” wire open,
poor fuel pump relay-
to-coupler connection
or faulty fuel pump.
3 1) Check fuel pump relay, referring to
p.6E1-68.
Is it in good condition?
Poor fuel pump relay-to-coupler con-
nection, “Br/B”, “B/W” wire open or
poor E32-318 connection.
If wire and connection are OK, substi-
tute a known-good ECM and recheck.
Faulty fuel pump relay.
Fig. for STEP 2
1. Fuel pump relay coupler
2. Service wire
6E1-32 ENGINE AND EMISSION CONTROL SYSTEM
B-2 FUEL INJECTOR AND ITS CIRCUIT CHECK
1. Battery positive voltage
2. Blank
3. “FI” fuse in fuse/relay box
4. Main relay
5. ECM
6. No.1 injector
7. No.2 injector
8. No.3 injector
STEP
ACTION YES NO
1
Check each injector for operating sound at engine
cranking using sound scope.
Do all 3 injector make operating sound?
Fuel injector circuit is in
good condition.
Go to Step 2.
2
Does none of 3 injectors make operating sound at
Step 1?
Go to Step 4. Go to Step 3.
3
Check fuel injector(s) referring to p. 6E1-58.
Is it in good condition?
Check coupler connection
and wire harness
of injector not making
operating sound.
Faulty fuel injector(s).
4
Check power circuit of injectors for open and short.
Is it in normal condition?
Check all 3 injectors for
resistance respectively.
If resistance is OK,
substitute a known-good
ECM and recheck.
Power circuit open or
short.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-33
Blank
6E1-34 ENGINE AND EMISSION CONTROL SYSTEM
B-3 FUEL PRESSURE CHECK (Page 1 of 2)
1. Fuel Injector
2. Delivery pipe
3. Fuel regulator
4. Fuel filter
5. Fuel pump
Special Tool
(A) Gauge (09912-58441)
(B) Hose (09912-58431)
(C) 3-way joint (09912-58490)
STEP
ACTION YES NO
1
1) Release fuel pressure from fuel feed line.
2) Install fuel pressure gauge.
3) Check fuel pressure by repeating ignition switch ON
and OFF.
Is fuel pressure then 270 – 310 kPa
(2.7 – 3.1 kg/cm
2
, 38.4 – 44.0 psi)?
Go to Step 2. Go to Step 5.
2
Is 200 kPa (2.0 kg/cm
2
, 28.4 psi) or higher fuel pres-
sure retained for 1 minute after fuel pump is stopped at
step 1?
Go to Step 3. Go to Step 4.
3
1) Start engine and warm it up to normal operating
temperature.
2) Keep it running at specified idle speed.
Is fuel pressure then within 200 – 240 kPa
(2.0 – 2.4 kg/cm
2
, 28.4 – 34.1 psi)?
Normal fuel pressure. Clogged vacuum
passage for fuel
pressure regulator or
faulty fuel pressure
regulator.
4
Is there fuel leakage from fuel feed line hose, pipe or
their joint?
Fuel leakage from
hose, pipe or joint.
Go to Step 10.
5
Was fuel pressure higher than spec. in step 1? Go to Step 6. Go to Step 7.
6
1) Disconnect fuel return hose from fuel pressure
regulator and connect new return hose to it.
2) Put the other end of new return hose into approved
gasoline container.
3) Operate fuel pump.
Is specified fuel pressure obtained then?
Restricted fuel return
hose or pipe.
Faulty fuel pressure
regulator.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-35
B-3 FUEL PRESSURE CHECK (Page 2 of 2)
STEP
ACTION YES NO
7
Was no fuel pressure applied in step 1? Go to Step 8. Go to Step 9.
8
With fuel pump operated and fuel return hose blocked
by pinching it, is fuel pressure applied?
Faulty fuel pressure
regulator.
Shortage of fuel or fuel
pump or its circuit
malfunction.
9
1) Operate fuel pump.
2) With fuel return hose blocked by pinching it, check
fuel pressure.
Is it 450 kPa (4.5 kg/cm
2
, 63.9 psi) or more?
Faulty fuel pressure
regulator.
Clogged fuel filter,
restricted fuel feed
hose or pipe, Faulty
fuel pump or fuel
leakage from hose
connection in fuel
tank.
10
1) Disconnect fuel return hose from pressure
regulator and connect new return hose to it.
2) Insert the other end of new return hose into
approved gasoline container.
3) Check again if specified pressure is obtained.
While doing so, does fuel come out of return hose?
Faulty fuel pressure
regulator.
Fuel leakage from
injector, Fuel leakage
from between injector
and delivery pipe,
Faulty fuel pump
(faulty check valve in
fuel pump) or Fuel
leakage from fuel
pressure regulator
diaphragm.
Fig. for STEP 1
1. Fuel feed hose
Special Tool
(A) Gauge
(B) Hose
(C) 3-way joint
6E1-36 ENGINE AND EMISSION CONTROL SYSTEM
B-4 IDLE AIR CONTROL SYSTEM CHECK (Page 1 of 2)
1. Battery positive voltage
2. Blank
3. “FI” fuse in fuse/relay box
4. Main relay
5. ECM
6. IAC valve
7. Throttle body
8. Engine coolant
9. Bypass air
10. TP sensor
STEP
ACTION YES NO
1
IAC valve function check:
1) Check IAC valve referring to IAC VALVE INSPEC-
TION in this section.
Is check result in good condition?
Go to Step 2. Go to Step 5.
2
Closed throttle position check:
1) Connect SUZUKI scan tool to DLC.
2) With the ignition switch ON position, check
“CLOSED THROT POS” in parameter data list.
Throttle valve fully close : ON
Throttle valve slight open : OFF
Is each check result as specified?
Check for following:
EVAP canister purge valve
Accessory engine load PCV
system
Idle air passage
A/C signal
Go to Step 3.
3
Closed throttle position recheck:
1) With the ignition switch OFF position disconnect
negative battery cable for 30 seconds and con-
nect it.
2) Recheck closed throttle position referring to Step
2.
Is each check result as specified?
Recheck engine idle speed. Go to Step 4.
4
TP sensor signal voltage check:
1) With the ignition switch ON position, check volt-
age between E33-206 and ground.
Throttle valve fully close: 0.78 – 0.83V
Is each check result as specified?
Substitute a known good
ECM and recheck.
Check TP sensor
referring TP SEN-
SOR INSPEC-
TION in this sec-
tion.
5
IAC valve circuit check:
1) Check “O”, “B/R” and “B” wire for open and short.
Are they in good condition?
Go to Step 6. Repair or replace.
6
IAC valve substitution:
1) Substitute a known good IAC valve.
2) Check IAC valve referring to IAC VALVE INSPEC-
TION in this section.
Is check result in good condition?
IAC valve malfunction. Substitute a
known good ECM
and recheck.
ENGINE AND EMISSION CONTROL SYSTEM 6E1-37
B-5 EVAPORATIVE EMISSION CONTROL SYSTEM CHECK
1. To throttle body
2. To fuel tank
3. EVAP canister
4. Air
5. Air and vapor
6. EVAP canister purge valve
7. Main relay
8. Sensed information
9. ECM
10. Fuel tank
STEP
ACTION YES NO
1
Check canister purge system for opera-
tion referring to p.6E1-73.
Is it in good condition?
Check EVAP canister referring to
p.6E1-76 and fuel filler cap referring
to Section 6C.
If OK, system is in good condition.
Go to Step 2.
2
Check vacuum passage, hoses and
EVAP canister purge valve referring to
p.6E1-74.
Are they in good condition?
D “O/Y” wire open,
D “O/Y” wire shorted to ground,
D Poor EVAP canister purge valve
coupler connection,
D Poor “E32-307” connection,
D Poor performance of ECT sensor
or MAP sensor or TP sensor
If none of the above exists, substi-
tute a known-good ECM and re-
check.
D Vacuum passage
clogged,
D Vacuum leakage or
D Faulty EVAP canister
purge valve
6E1-38 ENGINE AND EMISSION CONTROL SYSTEM
B-6 ENGINE START SIGNAL CHECK
1. ECM
2. ECM coupler
3. Main switch
4. To starting motor
STEP
ACTION YES NO
1
1) With ignition switch OFF, disconnect couplers from ECM.
2) Is 6 – 12 V voltage applied to E34-13 terminal of coupler
only when cranking engine.
Engine starter
signal circuit is
in good condition.
D “B/Y” wire open or
D Poor “E34-13”
connection
Fig. for STEP 1
1. ECM coupler disconnected
2. Body ground
ENGINE AND EMISSION CONTROL SYSTEM 6E1-39
B-7 RADIATOR FAN CONTROL SYSTEM CHECK
1. Radiator fan motor
2. Radiator fan control (RFC) relay
3. ECM
4. Main relay
5. Engine coolant temp. (ECT) sensor
6. Vehicle speed sensor
7. A/C signal
STEP
ACTION YES NO
1
Check radiator fan control system referring to
p. 6E1-71.
Is it in good condition?
RFC system is in good
condition.
Go to Step 2.
2
Check RFC relay referring to p. 6E1-71.
Is it in good condition?
Go to Step 3. Faulty RFC relay.
3
Check wire harnesses and connections for open
or short.
Are they in good condition?
Poor performance of ECT
sensor. If ECT sensor is OK,
substitute a known-good
ECM and recheck.
D Wire open or short
D Poor connection or
D Faulty radiator fan
motor
6E1-40 ENGINE AND EMISSION CONTROL SYSTEM
B-8 A/C CONTROL SIGNAL CHECK (IF EQUIPPED)
1. Battery
2. Main fuse box
3. Ignition switch
4. “HEATER” fuse
5. Blower fan motor
6. Blower fan switch
7. A/C switch
8. Dual pressure switch
9. A/C evaporator thermistor
10. A/C compressor
11. ECM
12. A/C compressor control relay
STEP
ACTION YES NO
1
1) Check voltage at “E34-19” terminal under each
condition given in table below.
2) Is check result satisfactory?
Ignition switch ON
A/C switch OFF
Blower fan switch OFF
Ignition switch ON
A/C switch ON
Blower fan switch ON
10 – 14 V
2 V or less
A/C control signal is
in good condition.
D “G/B” wire open or short
D Poor “E34-19” terminal
connection
If wire and connection are
OK, check dual pressure
switch and A/C switch re-
ferring to Section 1B.
Fig. for STEP 1
1. ECM coupler connected
2. Body ground
ENGINE AND EMISSION CONTROL SYSTEM 6E1-41
B-9 ELECTRIC LOAD SIGNAL CIRCUITS CHECK
1. Ignition switch
2. Blower fan motor
3. Blower fan switch
4. Heater blower register
5. Clearance light
6. From battery
7. Clearance light switch
STEP
ACTION YES NO
1
Check voltage at E34-18 terminal under each condition given
below.
Small light turned OFF : 0 V
Small light turned ON : 10 – 14 V
Is check result satisfactory?
Go to Step 2. D “Br/R” wire open or
short
D Poor “E34-18” ter-
minal connection
2
Check voltage at E34-9 terminal under each condition given
below.
Ignition switch ON and
heater blower fan turned OFF : 10 – 14 V
Ignition switch ON and
heater blower fan turned ON : 2 V or less
Is check result satisfactory?
Electric load
signal circuit
are in good
condition.
D “P/B” wire open or
short
D Poor “E34-9” termi-
nal connection
Fig. for STEP 1 and 2
1. ECM coupler connected
2. Body ground
6E1-42 ENGINE AND EMISSION CONTROL SYSTEM
B-10 FUEL CUT OPERATION CHECK
1. ECM
2. ECM coupler
3. TP sensor
STEP
ACTION YES NO
1
Check fuel cut operation referring FUEL CUT OPERA-
TION INSPECTION in this section.
Does fuel injector operate as specified?
Fuel cut operation is
in good condition.
Go to step 2.
2
Closed throttle position check:
1) Connect Tech-1 to DLC.
2) With the ignition switch ON position, check “CLOSED
THROT POS” in parameter data list.
Throttle valve fully close : ON
Throttle valve slight open : OFF
Is each check result as specified?
Substitute a known
good ECM and re-
check.
Go to step 3.
3
Closed throttle position recheck:
1) With the ignition switch OFF position disconnect neg-
ative battery cable for 30 seconds and connect it.
2) Recheck closed throttle position referring to Step 2.
Is each check result as specified?
Recheck fuel cut op-
eration.
Go to step 4.
4
TP sensor signal voltage check:
1) With the ignition switch at ON position, check voltage
between E33-206 and ground.
Throttle valve fully close: 0.78 – 0.83V
Throttle valve fully open: 3.7 – 4.7V
Is each check result as specified?
Substitute a known
good ECM and re-
check fuel cut opera-
tion.
Check TP sensor re-
ferring to TP SEN-
SOR INSPECTION in
this section.
INSPECTION OF ECM AND ITS CIRCUITS
ECM and its circuits can be checked at ECM wiring couplers by
measuring voltage and resistance.
CAUTION:
ECM cannot be checked by itself. It is strictly prohibited
to connect voltmeter or ohmmeter to ECM with couplers
disconnected from it.
VOLTAGE CHECK
1) Remove ECM from body with ignition switch OFF referring to
ECM REMOVAL.
2) Connect ECM couplers to ECM.
3) Check voltage at each terminal of couplers connected.
NOTE:
As each terminal voltage is affected by the battery voltage,
confirm that it is 11V or more when ignition switch is ON.
1. ECM
2. Couplers
3. Body ground
TERMINAL ARRANGEMENT OF ECM COUPLER (VIEWED FROM HARNESS SIDE)
ENGINE AND EMISSION CONTROL SYSTEM 6E1-43
6E1-44 ENGINE AND EMISSION CONTROL SYSTEM
TERMINAL CIRCUIT NORMAL VOLTAGE CONDITION
E34-1 Blank — —
E34-2 IAC valve — —
E34-3 Blank — —
E34-4 Blank — —
E34-5 Blank — —
E34-6 Blank 10 – 14 V Ignition switch ON, selector lever: “L” range
E34-7
4.5 – 5.5 V Ignition switch ON
E34
-
7
1 V or less Ignition switch ON, Test switch terminal grounded
E34-8
4.5 – 5.5 V Ignition switch ON
E34
-
8
1 V or less Ignition switch ON, Test switch terminal grounded
E34-9
Electric load signal for blow-
2 V or less
Ignition switch ON, Blower fan switch : High or Middle
position
E34
-
9
er fan motor
4.0 – 14.0 V
Ignition switch ON, Blower fan switch : OFF or Low posi-
tion
E34-10
Stop lamp switch
1.5V or less Brake pedal released (switch OFF), Ignition switch ON
E34
-
10
(brake pedal switch)
10 – 14 V Brake pedal depressed (switch ON), Ignition switch ON
E34-11 Blank — —
E34-12 Data link connector 10 – 14 V Ignition switch ON
E34-13
Engine starter switch
1.5V or less Ignition switch ON
E34
-
13
(engine starter signal)
6 – 12 V While engine cranking
E34-14 Blank 10 – 14 V Ignition switch ON, selector lever: “L” range
E34-15 Blank — —
E34-16 Blank — —
E34-17 Duty output terminal 1 V or less Ignition switch ON
E34-18
Electric load signal for small
1 V or less Ignition switch ON and Small light turned OFF
E34
-
18
light switch
10 – 14 V Ignition switch ON and Small light turned ON
E34-19
A/C ON signal from A/C
10 – 14 V
Ignition switch ON, A/C switch OFF, Blower fan switch
OFF
E34
-
19
switch (if equipped)
2 V or less
Ignition switch ON, A/C switch ON, Blower fan switch
ON
E34-20 Blank — —
E34-21 Blank — —
E34-22 Sensor ground — —
TERMINAL CIRCUIT NORMAL VOLTAGE CONDITION
E33-201 Power supply for sensor 4.5 – 5.5 V Ignition switch ON
E33-202 Blank — —
E33-203 CMP sensor (+) 1 V or less Ignition switch ON
E33-204 VSS
Indicator deflection
repeated between
0 – 1 V and 4 – 14 V
Ignition switch ON, Front left tire turned quickly with front
right tire locked
E33-205
About 3.6 V Ignition switch ON, engine stop
E33
-
205
About 1 – 3 V Engine running at idle speed, A/C OFF
E33-206
0.78 – 0.83 V Throttle valve at idle position
E33
-
206
3.7 – 4.7 V Throttle valve at full open position
E33-207
A/C evaporator temp. sen-
sor (with A/C)
2.0 – 2.5 V A/C ventilator outlet temp.: at 205C
E33-208
2.5 – 3.0 V Engine coolant temp.: at 205C
E33
-
208
0.6 – 0.9 V Engine coolant temp.: at 805C
E33-209 Blank — —
E33-210 Blank — —
ENGINE AND EMISSION CONTROL SYSTEM 6E1-45
TERMINAL CONDITIONNORMAL VOLTAGECIRCUIT
E33-211 CMP sensor (–) About 0 V —
E33-212 Blank — —
E33-213 Oxygen sensor
Deflect between 0
and 1 V
Engine running, after engine warmed up
E33-214
2.0 – 2.5 V IAT sensor ambient temp.: at 205C
E33
-
214
0.4 – 0.6 V IAT sensor ambient temp.: at 805C
E33-215 Blank — —
E33-216
A/C compressor magnet
1 V or less Engine running, A/C compressor: ON
E33
-
216
clutch (with A/C) relay
10 – 14 V Engine running, A/C compressor: OFF
TERMINAL CIRCUIT NORMAL VOLTAGE CONDITION
E32-301 Ground — —
E32-302 Power source 10 – 14 V Ignition switch ON
E32-303 Blank — —
E32-304 Blank — —
E32-305 Blank — —
E32-306 Blank — —
E32-307 EVAP canister purge valve 10 – 14 V Ignition switch ON
E32-308 Blank — —
E32-309 Blank — —
E32-310 Ignition coil assembly 1 V or less Ignition switch ON
E32-311 Fuel injector No.3 10 – 14 V Ignition switch ON
E32-312 Fuel injector No.1 10 – 14 V Ignition switch ON
E32-313 Ground — —
E32-314 Power source for backup 10 – 14 V —
E32-315 Power source 10 – 14 V Ignition switch ON
E32-316 Blank — —
E32-317
About 0.5 V or less Ignition switch ON, engine stops
E32
-
317
10 – 14 V Engine running
E32-318
p
p
1 V or less
For 3 seconds after ignition switch ON or while engine
running
E32
-
318
10 – 14 V
After 3 seconds from ignition switch ON with engine
stopped
E32-319 Main relay 1 V or less Ignition switch ON
E32-320
10 – 14 V Ignition switch ON
E32
-
320
1 V or less Engine cooling fan ON
E32-321 Blank — —
E32-322 Blank — —
E32-323 Blank — —
E32-324 Blank — —
E32-325 Fuel injector No.2 10 – 14 V Ignition switch ON
E32-326 Ground — —
RESISTANCE CHECK
1) Disconnect ECM couplers from ECM with ignition switch OFF.
2) Check resistance between each pair of terminals of discon-
nected couplers as listed in following table.
1. ECM coupler disconnected
2. Ohmmeter
CAUTION:
Never touch terminals of ECM itself or connect volt-
meter or ohmmeter.
CAUTION:
D Be sure to connect ohmmeter probe from wire har-
ness side of coupler.
D Be sure to turn OFF ignition switch for this check.
D Resistance in table below represents that when
parts temperature is 20_C (68_F).
6E1-46 ENGINE AND EMISSION CONTROL SYSTEM
TERMINAL CIRCUIT
NORMAL
RESISTANCE
CONDITION
E32-312 – E32-302 Fuel Injector No.1 11.3 – 13.8 W
E32-325 – E32-302 Fuel injector No.2 11.3 – 13.8 W
E32-311 – E32-302 Fuel Injector No.3 11.3 – 13.8 W
E32-307 – E32-302
EVAP canister
p
urge valve
37 – 44 W F8D engine
E32
-
307
–
E32
-
302
EVAP
canister
urge
valve
28 – 36 W F8B engine
E32-320 E32-302
Radiator fan control relay
90 – 110 W omron made
E32
-
320
–
E32
-
302
Radiator
fan
control
relay
60 – 88 W interface made
E33-302 – E32-311 CMP sensor 185 – 275 W –10 – 50 _C (14 – 122 _F)
E32-318 – E32-314 Fuel pump relay 80 – 100 W Battery disconnected and ignition switch ON
E32-318 – E32-314 Main relay 80 – 100 W Battery disconnected and ignition switch ON
E32-301/313/326 –
Body ground
Ground Continuity

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