U660E Automatic Transaxle for Your Toyota Alphard Van First Generation (2002-2008)

Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
General  
– Compact, lightweight and high-capacity 6-speed  
Super ECT  
U660E  
3
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Specification  
Model  
New ALPHARD  
2GR-FE  
U660E  
3.300  
’07 CAMRY  
Engine Type  
2GR-FE  
U660E  
Transaxle Type  
Gear Ratio  
1st  
2nd  
1.900  
3rd  
1.420  
4th  
1.000  
5th  
0.713  
6th  
0.608  
Reverse  
4.148  
Differential Gear Ratio*1  
3.935  
3.685  
Fluid Capacity*2  
[Liter (US qts, Imp. qts)]  
6.54 (6.91, 5.76)  
6.57 (6.94, 5.78)  
Fluid Type  
TOYOTA Genuine ATF WS  
*1: Counter gear ratio included  
*2: Differential included  
4
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Features  
• 2 planetary gear units are used  
Gear  
Portion  
• Number of planetary gear unit, clutch and one-way clutch is reduced from  
U151E  
• The pump impeller and turbine runner portions have been made narrower  
• Split piston for Clutch C2 that acts in the pull direction  
• Compact and high-flow rate linear solenoid valve (SL1, SL2, SL3 and SL4)  
controls the engagement elements by directly  
Hydraulic  
Portion  
• 3 ATF pressure switches are located in the output fluid passages of SL1, SL2  
and SLU  
• A felt type oil strainer is used  
• Overflow plug for ATF adjustment  
• TCM is mounted on the transaxle  
• Hall IC type speed sensor (NT & NC) is used  
• Clutch to clutch pressure control is operated at 2 3 4 5 6 shift  
change  
Control  
Other  
• Powertrain cooperative control ensures excellent start-off performance, and  
realizes the deceleration which responded to the drive’s intension  
• Lock-up clutch control & flex lock-up clutch control operation range is  
increased  
• The curvature of the differential case opening is enlarged to moderate the  
stress concentration  
5
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
General  
– Compact 6-speed transaxle  
U660E  
U151E  
6
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Planetary Gear Unit  
– Number of planetary gear unit, clutch and one-way  
clutch is reduced from U151E  
U660E  
U151E  
F1 B2  
B3 B1  
F1  
B1  
B2  
C2  
C1  
C1  
C0 C2  
C3  
B3  
F2  
: Clutch  
: Brake  
: One-way Clutch  
7
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Torque Converter  
– The pump impeller and turbine runner portions have  
been made narrower  
Narrowed  
U660E  
U151E  
Transaxle Type  
U660E  
Torque Converter  
Type  
3-Element, 1-Step,  
2-Phase  
Stall Torque Ratio  
1.78  
8
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Torque Converter  
– Please make sure to check the installation condition of  
torque converter after you install  
After the torque  
converter installation  
Difficult  
to install  
Make sure to check the  
installation condition  
Narrowed  
U660E  
U151E  
B
A
Standard: B = A + 1 mm [0.03937 in.] or more  
9
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Clutch Piston for C2  
– Split piston that acts in the pull direction  
Split Type  
Piston  
Divided  
Clutch (C2)  
Spring  
Non-Split  
Type Piston  
10  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Linear Solenoid Valve (SL1, SL2, SL3 and SL4)  
– Compact and high-flow rate linear solenoid valve  
controls the engagement elements by directly  
U660E  
U151E  
Linear  
Solenoid  
Valve  
Solenoid  
Modulator  
Valve  
Linear  
Solenoid  
Valve  
Control  
Valve  
Line  
Pressure  
Brake  
Brake  
Line Pressure  
11  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
ATF Pressure Switch  
– 3 ATF pressure switches are located in the output fluid  
passages of SL1, SL2 and SLU  
Lower Valve Body  
ATF Pressure  
Switch 3  
ATF Pressure  
Switch 2  
ATF Pressure  
Switch 1  
SLU  
SL2  
SL1  
12  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Speed Sensor (NT & NC)  
– Hall IC type speed sensor is used  
Counter Gear  
Speed Sensor  
(Hall IC Type)  
Input Turbine  
Speed Sensor  
(Hall IC Type)  
Upper Valve Body  
Lower Valve Body  
13  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Oil Strainer  
– A felt made pleated oil strainer is used  
Oil Strainer  
Oil Pan  
14  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Differential Case  
– The curvature of the differential case opening is  
enlarged to moderate the stress concentration  
: Tensile Stress  
: Compressive Stress  
Large  
Curvature  
Stresses applied to differential case opening during driving  
15  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
TCM (Transaxle Control Module)  
– TCM is mounted on the transaxle  
TCM  
16  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Automatic Transaxle Compensation Code  
– Automatic transaxle compensation code (60-digit) on  
the QR label  
QR Label  
Automatic Transaxle  
Compensation Code  
(60-digit)  
17  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– After the following parts replacement, perform the A/T  
CODE SET or the ROAD TEST to improve shift shock  
Before the  
After the replacement  
replacement  
Replacement Parts  
READ A/T  
CODE  
SET A/T  
CODE  
RESET  
MEMORY  
ROAD TEST  
TCM  
O
-
O*1  
O
(O*2)  
(O*2)  
O
O
O
O
Automatic Transaxle  
Valve Body Assembly  
-
-
Shift Solenoid Valve  
(SL1 and SL2)  
-
-
-
-
-
O
O
Shift Solenoid Valve  
(SL3 and SL4)  
O
*1: When the transaxle compensation code cannot be read from previous TCM, input the 60-  
digit compensation code from the QR label on the current automatic transaxle  
*2: When SET A/T CODE is performed, the compensation code value learned by driving is  
also cleared  
18  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Read Compensation Code)  
19  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Read Compensation Code)  
20  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Read Compensation Code)  
21  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Set Compensation Code)  
22  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Set Compensation Code)  
Input  
Open  
23  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Set Compensation Code)  
(15 digits x 4 times)  
123451234512345  
Input  
Next  
Open  
24  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Transaxle Compensation Code  
– A/T Code Registration (Set Compensation Code)  
25  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Control  
Control  
Clutch to Clutch Pressure Control  
Line Pressure Optimal Control  
Powertrain Cooperative Control  
Shift Timing Control  
Lock-up Timing Control  
Flex Lock-up Clutch Control  
Coast Downshift Control  
AI (Artificial Intelligence)-SHIFT  
Multi-Mode Automatic Transmission  
26  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Clutch to Clutch Pressure Control  
– This control is operated at 2 3 4 5 6 shift  
change  
ATF Temp. Sensor  
Air Flow Meter  
V Bus  
(Local)  
Input Turbine  
Speed Sensor  
Water Temp.  
Sensor  
TCM  
ECM  
Counter Gear  
Speed Sensor  
Throttle Position  
Sensor  
SL1  
SL2  
SL4  
SL3  
C1  
C2  
B3  
B1  
Line Pressure  
27  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Powertrain Cooperative Control  
– Excellent start-off performance is ensured  
: U660E  
[Throttle Control at Launch]  
: Conventional  
Accelerator  
Pedal Opening  
Throttle Valve  
Opening  
Tire Slippage  
Suppression  
Response  
improved  
Engine  
Output  
Time  
28  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Powertrain Cooperative Control  
– The gear position during accelerator pedal OFF is  
determined by the drive’s pedal operation  
: Sudden accelerator pedal operation  
: Slow accelerator pedal operation  
[Deceleration Force Control]  
Accelerator  
Pedal Opening  
6th  
5th  
4th  
Gear Position  
3rd  
Engine output is changed  
by driver’s input  
Engine  
Output  
Time  
29  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Powertrain Cooperative Control  
– Excellent response and shift shock reduction are  
achieved  
[Transient Shifting Control]  
ECM  
TCM  
Drives  
Solenoid  
Valve  
Driver’s  
desired  
drive force  
ETCS-i Control  
ESA Control  
Accelerator Pedal Operation  
Optimal engine output  
Driver’s  
desired drive  
force is  
Engine  
achieved  
Solenoid Valve  
(SL1, SL2,  
Automatic  
Transaxle  
SL3, SL4)  
30  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Lock-up Timing Control & Flex Lock-up Clutch Control  
– Operation range  
[Lock-up Timing Control]  
[Flex Lock-up Clutch Control]  
Position or Range  
Gear  
Position or Range  
Gear  
D or S6 S5  
S4  
X
D or S6 S5  
S4  
X
1st  
2nd  
3rd  
4th  
5th  
6th  
X
X
1st  
2nd  
3rd  
4th  
5th  
6th  
X
X
*  
*  
*  
*  
*  
*  
: Available  
X: Not available : Not applicable  
*: Flex Lock-up also operates, when the vehicle is decelerating  
31  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Coast Downshift Control  
– This control maintains sufficient engine speed and  
keeps fuel cut control operating for as long as possible  
With Control  
Fuel Cut  
Control ON  
Fuel cut time  
is expanded  
Without Control  
Fuel Cut  
Control OFF  
Fuel Cut  
Control ON  
to 5th to 4th  
6th  
5th  
Fuel Cut  
Control OFF  
to 4th  
to 3rd  
Time  
32  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Multi-Mode Automatic Transmission  
– Initial shift range from “D” to “S” is S4 or S5 range  
– It is selected depending on the vehicle speed  
- Default Shift Range -  
P
R
S4  
S5  
5
N
P
Vehicle Speed  
D S  
R
S Position  
Indicator Ligh
N
+
D S  
-
Shift Pattern  
33  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Multi-Mode Automatic Transmission  
– When holding the shift lever to “+” position 1 second  
or more, the shift range is shifted up to S6 range  
P
S1  
S4  
R
N
S2  
S3  
S6  
6
S5  
P
D S  
Hold 1 sec.  
or more  
R
Shift Range  
Usable Gear  
S6 (D)  
S5  
6th  
5th  
4th  
3rd  
2nd  
1st  
1st  
1st  
1st  
1st  
N
+
D S  
S4  
S3  
-
S2  
Shift Pattern  
S1  
1st  
34  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
Fail-safe  
Malfunction Part  
Function  
Shifting to only either the 1st or 3rd gears is allowed.  
Input Turbine  
Speed Sensor  
• The counter gear speed is detected through the signals from the  
skid control ECU (speed sensor signals).  
• Shifting between the 1st to 4th gears is allowed.  
Counter Gear  
Speed Sensor  
ATF Temp. Sensor Shifting between the 1st to 4th gears is allowed.  
TCM  
Power Supply  
(Voltage is Low)  
When the vehicle is being driven in 6th gear, the transaxle is fixed in  
6th gear. When being driven in any of the 1st to 5th gears, the  
transaxle is fixed in 5th gear.  
CAN Communication Shifting to only either the 1st or 3rd gears is allowed.  
Knock Sensor Shifting between the 1st to 4th gears is allowed.  
Solenoid Valve SL1, The current to the failed solenoid valve is cut off and control is  
SL2, SL3 and SL4 effected by operating the other solenoid valves with normal operation  
35  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
U660E Automatic Transaxle  
DTCs for TCM  
DTC No.  
Detection Item  
Trouble Area  
Input Turbine  
Speed Sensor  
(Hall IC Type)  
P0715 Input/Turbine Speed Sensor Circuit Malfunction  
P0791 Intermediate Shaft Speed Sensor "A" Circuit  
Counter Gear  
Speed Sensor  
(Hall IC Type)  
P0872 Transmission Fluid Pressure Sensor/Switch "C" Circuit Low  
P0873 Transmission Fluid Pressure Sensor/Switch "C" Circuit High  
P0877 Transmission Fluid Pressure Sensor/Switch "D" Circuit Low  
P0878 Transmission Fluid Pressure Sensor/Switch "D" Circuit High  
P0989 Transmission Fluid Pressure Sensor/Switch "E" Circuit Low  
P0990 Transmission Fluid Pressure Sensor/Switch "E" Circuit High  
P2808 Pressure Control Solenoid "G“ Performance  
ATF Pressure  
Switch 1  
ATF Pressure  
Switch 2  
ATF Pressure  
Switch 3  
Solenoid Valve  
SL4  
P2810 Pressure Control Solenoid "G“ Electrical  
36  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Inspection  
– ATF Inspection Procedure  
(No level gauge (dip-stick) and filler tube)  
Check Items  
• Visually check for ATF leaks of  
the following areas  
- Overflow Plug  
- Oil Seal  
- Each Case Join, etc  
NOTE:  
If there is no ATF leak from transaxle, check of the ATF level is no required  
37  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Initial Refill / Replacement  
– Service Procedure  
1: Refill the ATF  
Refill Plug  
1. Lift the vehicle  
2. Remove the refill plug and the  
overflow plug  
3. Fill up ATF from the refill hole  
until overflowing from the  
overflow plug hole  
4. Install the overflow plug  
5. Refill ATF* from the refill hole  
6. Install the refill plug  
Overflow Plug  
7. Lowering the vehicle  
*: Refer to the 40th slide  
38  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Automatic Fluid (ATF)  
– TOYOTA Genuine ATF WS is used for fuel economy by  
reducing its viscosity  
Thick  
T-IV  
WS  
ATF Temp.  
High  
39  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Initial Refill / Replacement  
– Service Procedure  
• Refill Quantity  
Refill Quantity  
[Liter (US qts, Imp. qts)]  
Service Part  
New torque converter is used  
Torque converter is reused  
5.3 (5.6, 4.7)  
Replacement  
of transaxle  
3.4 (3.6, 3.0)  
• Removal and installation of oil pan  
• Removal and installation of drive shaft  
2.8 (3.0, 2.5)  
Removal and installation of valve body  
3.2 (3.4, 2.8)  
4.8 (5.1, 4.2)  
Removal and installation of torque converter  
• Replacement of oil cooler  
• Repair of oil leakage  
0.5 (0.5, 0.4)  
40  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Fluid Level Check (Without Intelligent Tester)  
– Service Procedure  
CG  
TC  
2: ATF temperature check  
1. Using the SST, connect TC and  
CG of DLC3  
2. Start the engine  
3. Shift into position from P to D  
DLC3  
range  
4. Move the shift lever quickly  
between N and D position  
1.5 secs. or less  
P
R
5. Confirm “D” position indicator  
D
N
N
lights up for 2 sec.  
+
6. Shift to P and remove the SST  
D S  
6 secs. or more  
-
41  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Fluid Level Check (With Intelligent Tester)  
– Service Procedure  
2: ATF temperature check  
1. Connect the Intelligent Tester  
to DLC3  
2. Turn the engine on and turn the  
Intelligent Tester on  
3. Check A/T oil temperature  
4. Start the engine  
1.5 secs. or less  
P
R
5. Shift into position from P to D  
range  
D
N
N
6. Move the shift lever quickly  
between N and D position  
+
D S  
6 secs. or more  
-
7. Confirm “D” position indicator  
lights up for 2 sec.  
42  
Model Outline  
for Technician  
Engine  
Chassis  
Body  
Body Electrical  
Service Point (U660E Automatic Transaxle)  
Fluid Level Check  
– Service Procedure  
3: Adjust the ATF level  
1. Engine idling warm-up ATF  
2. Verify “D” position indicator  
turns on (ATF temp. check)  
3. Lift up the vehicle with  
engine idling  
4. Check the ATF level by ATF  
overflow from overflow plug hole  
Overflow Plug  
5. Install the overflow plug and the  
refill plug  
6. Lower the vehicle  
7. Stop the engine  
43  

Related Topics

General
Specification
Features
General (Comparison)
Planetary Gear Unit
Torque Converter
Clutch Piston for C2
Linear Solenoid Valve (SL1, SL2, SL3, SL4)
ATF Pressure Switch
Speed Sensor (NT & NC)
Oil Strainer
Differential Case
TCM (Transaxle Control Module)
Automatic Transaxle Compensation Code
Control
Fail-safe
DTCs for TCM
Service Point (Inspection & Fluid Refill)

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