SERVICE AFTER REPLACING TCM AND TRANSAXLE ASSEMBLY
Perform the applicable service according to the following table when replacing TCM or transaxle assembly.
| CAUTION | Never start the engine until the service is completed. "DTC P1701" may be indicated soon after replacing TCM or transaxle assembly (after erasing the memory in the pattern B). Restart the self-diagnosis after erasing the self-diagnosis result using CONSULT-III. Check that no error is detected. |
| TCM | Transaxle assembly | Service pattern |
|---|---|---|
| Replaced with new unit | Not replaced the unit | "PATTERN A" |
| Not replaced the unit | Replaced with new or old unit | "PATTERN B" |
| Replaced with old unit | Not replaced the unit | |
| Replaced with new or old unit | ||
| Replaced with new unit | Replaced with new or old unit | "PATTERN C" |
TCM AND TRANSAXLE ASSEMBLY REFERENCE CHART
Note. Old unit means that the unit has been already used for another vehicle.
PATTERN A
- Shift the selector lever to "P" position after replacing TCM.
- Turn ignition switch ON.
- Check that the shift position indicator in the combination meter turns ON (It indicates approximately 1 or 2 seconds after turning ignition switch ON.) Check the following items if shift position indicator does not turn ON. Repair or replace accordingly as necessary. The harness between TCM and ROM ASSY in transaxle assembly is open or shorted. Terminals disconnected, loose, or bent from connector housing.
PATTERN B
- Turn ignition switch ON after replacing each part.
- Connect the vehicle with CONSULT-III.
- Start engine. CAUTION: Never start driving.
- Select "Data monitor" in "TRANSMISSION".
- Warm up transaxle assembly until "ATFTEMP COUNT" indicates 47 [approximately 20°C (68°F)] or more, and then turn ignition switch OFF.
- Turn ignition switch ON. CAUTION: Never start engine.
- Select "Self Diagnostic Results" in "TRANSMISSION".
- Shift the selector lever to "R" position.
- Depress slightly the accelerator pedal (Pedal angle: 2/8) while depressing the brake pedal.
- Select "Erase" with step 9 .
- Release brake pedal and accelerator pedal.
- Turn ignition switch OFF while keeping the selector lever in "R" position.
- Wait approximately 10 seconds.
- Turn ignition switch ON while keeping the selector lever in "R" position.
- Select "Special function" in "TRANSMISSION".
- Check that the value on "CALIB DATA" in CONSULT-III is the same as the data listed in the table below. Restart the procedure from step 3 if the values are not the same. CALIB DATA ITEM DISPLAY CHART Item name Display value UNIT CLB ID 1 00 UNIT CLB ID 2 00 UNIT CLB ID 3 00 UNIT CLB ID 4 00 UNIT CLB ID 5 00 UNIT CLB ID 6 00
- Shift the selector lever to "P" position.
- Check that the shift position indicator in combination meter turns ON. (It indicates approximately 1 or 2 seconds after shifting the selector lever to "P" position.) Check the following items if shift position indicator does not turn ON. Repair or replace accordingly as necessary. The harness between TCM and ROM ASSY in transaxle assembly is open or shorted. Terminals disconnected, loose, or bent from connector housing. Power supply and ground of TCM. Refer to " «DESCRIPTION»(ref-388054-S37532330062011022800000) ".
PATTERN C
- Replace transaxle assembly first, and then replace TCM.
- Perform the service of "PATTERN A". (Perform the service of "PATTERN B" if TCM is replaced first.)
Scheme 182
Scheme 183
Scheme 184
Scheme 185
TRANSAXLE ASSEMBLY
| Name | Function |
|---|---|
| Torque converter regulator valve | Optimizes the supply pressure for the torque converter depending on driving conditions. |
| Pressure regulator valve | Optimizes the discharge pressure from the oil pump depending on driving conditions. |
| TCC control valve | Activates or deactivates the lock-up. Locks up smoothly by opening lock-up operation excessively. |
| Shift control valve | Controls inflow/outflow of line pressure from the primary pulley depending on the stroke difference between the stepping motor and the primary pulley. |
| Secondary valve | Controls the line pressure from the secondary pulley depending on operating conditions. |
| Clutch regulator valve | Adjusts the clutch operating pressure depending on operating conditions. |
| Manual valve | Transmits the clutch operating pressure to each circuit in accordance with the selected position. |
| Select control valve | Engages forward clutch, reverse brake smoothly depending on select operation. |
| Select switch valve | The select switch valve enables to select engagement/disengagement of lock-up clutch and that of forward clutch and reverse clutch. |
| TCC solenoid valve | P0740 TORQUE CONVERTER |
| Secondary pressure solenoid valve | P0778 PRESSURE CONTROL SOLENOID B |
| Line pressure solenoid valve | P0745 PRESSURE CONTROL SOLENOID A |
| Step motor | P1777 STEP MOTOR |
| Lock-up select solenoid valve | P1740 SELECT SOLENOID |
| Primary speed sensor | P0715 INPUT SPEED SENSOR A |
| Secondary speed sensor | P0720 OUTPUT SPEED SENSOR |
| Transmission range switch | P0705 TRANSMISSION RANGE SWITCH A |
| Primary pulley | COMPONENT DESCRIPTION |
| Secondary pulley | |
| Forward clutch | |
| Torque converter |
COMPONENT DESCRIPTION CHART
EXCEPT TRANSAXLE ASSEMBLY
| Name | Function |
|---|---|
| TCM | Judges driving condition according to signals from each sensor, and optimally controls variable speed mechanism. |
| Accelerator pedal position sensor | P1705 TP SENSOR |
EXCEPT TRANSAXLE ASSEMBLY REFERENCE CHART
Scheme 186
| Name | Function |
|---|---|
| Transmission range switch | P0705 TRANSMISSION RANGE SWITCH A |
| CVT fluid temperature sensor | P0710 TRANSMISSION FLUID TEMPERATURE SENSOR A |
| Primary speed sensor | P0715 INPUT SPEED SENSOR A |
| Secondary speed sensor | P0720 OUTPUT SPEED SENSOR |
| Primary pressure sensor | P0845 TRANSMISSION FLUID PRESSURE SEN/SW B |
| Secondary pressure sensor | P0840 TRANSMISSION FLUID PRESSURE SEN/SW A |
| Step motor | P1777 STEP MOTOR |
| TCC solenoid valve | P0740 TORQUE CONVERTER |
| Lock-up select solenoid valve | P1740 SELECT SOLENOID |
| Line pressure solenoid valve | P0745 PRESSURE CONTROL SOLENOID A |
| Secondary pressure solenoid valve | P0778 PRESSURE CONTROL SOLENOID B |
COMPONENT DESCRIPTION CHART
| Name | Function |
|---|---|
| TCM | COMPONENT DESCRIPTION |
| Stop lamp switch | P0703 BRAKE SWITCH B |
EXCEPT TRANSAXLE ASSEMBLY REFERENCE CHART
Scheme 187
Scheme 188
- The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to increase power transmission efficiency.
- The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid valve, which is controlled by a signal from TCM. The torque converter clutch control valve engages or releases the torque converter clutch piston.
- When shifting between "N" ("P") --> "D" ("R"), torque converter clutch solenoid valve controls engagement power of forward clutch and reverse brake.
- The lock-up applied gear range was expanded by locking up the torque converter at a lower vehicle speed than conventional CVT models.
| Name | Function |
|---|---|
| Torque converter regulator valve | COMPONENT DESCRIPTION |
| TCC control valve | |
| Select control valve | |
| Select switch valve | |
| Manual valve | |
| TCC solenoid valve | P0740 TORQUE CONVERTER |
| Lock-up select solenoid valve | P1740 SELECT SOLENOID |
| Primary speed sensor | P0715 INPUT SPEED SENSOR A |
| Secondary speed sensor | P0720 OUTPUT SPEED SENSOR |
| CVT fluid temperature sensor | P0710 TRANSMISSION FLUID TEMPERATURE SENSOR A |
| Transmission range switch | P0705 TRANSMISSION RANGE SWITCH A |
| Forward clutch | COMPONENT DESCRIPTION |
| Reverse brake | |
| Torque converter |
COMPONENT DESCRIPTION CHART
| Name | Function |
|---|---|
| TCM | COMPONENT DESCRIPTION |
| Accelerator pedal position sensor | P1705 TP SENSOR |
EXCEPT TRANSAXLE ASSEMBLY REFERENCE CHART
Scheme 189
Note. The gear ratio is set for each position separately.
| Item | Function |
|---|---|
| Transmission range switch | P0705 TRANSMISSION RANGE SWITCH A |
| Primary speed sensor | P0715 INPUT SPEED SENSOR A |
| Secondary speed sensor | P0720 OUTPUT SPEED SENSOR |
| Step motor | P1777 STEP MOTOR |
| Shift control valve | COMPONENT DESCRIPTION |
| Primary pulley | COMPONENT DESCRIPTION |
| Secondary pulley | COMPONENT DESCRIPTION |
COMPONENT DESCRIPTION CHART
| Item | Function |
|---|---|
| TCM | COMPONENT DESCRIPTION |
EXCEPT TRANSAXLE ASSEMBLY REFERENCE CHART
Scheme 190
Disassembly
- Remove transaxle assembly. Refer to " «EXPLODED VIEW»(ref-388054-S15390710832011022800000) ".
- Remove torque converter from transaxle assembly.
Assembly
Note the following, and install in the reverse order of removal.
Scheme 191
- Attach the pawl (A) of the torque converter to the inner gear hole (B) on the oil pump side. CAUTION: Rotate the torque converter for installing torque converter.