Dtc P2769 Short In Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve Sl). Corolla ZZE150
DESCRIPTION
MONITOR DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT TRANSMISSION WIRE (SL)
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
INSPECT SHIFT SOLENOID VALVE SL
DTC P2769 Short in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL) |
DTC P2770 Open in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL) |
DESCRIPTION
The shift solenoid valve SL is turned "ON" and "OFF" by signals from the ECM in order to control the hydraulic pressure operation, the lock-up relay valve, which then the controls operation of the lock-up clutch.Fail safe function:If the ECM detects a malfunction, it turns the shift solenoid valve SL off.DTC No.
| DTC Detection Condition
| Trouble Area
|
P2769
| ECM detects short in solenoid valve SL circuit 1 time when solenoid valve SL is operated (2-trip detection logic)
| - Short in shift solenoid valve SL circuit
- Shift solenoid valve SL
- ECM
|
P2770
| ECM detects open in solenoid valve SL circuit 1 time when solenoid valve SL is not operated (2-trip detection logic)
| - Open in shift solenoid valve SL circuit
- Shift solenoid valve SL
- ECM
|
MONITOR DESCRIPTION
Based on the signals from the throttle position sensor, the airflow meter and the crankshaft position sensor, the ECM sends a signal to the shift solenoid valve SL to regulate the hydraulic pressure and provide smoother gearshifts. The shift solenoid valve SL responds to commands from the ECM. The valve controls the lock-up relay valve to perform the torque converter lock-up function. If the ECM detects an open or short circuit for shift solenoid valve SL, the ECM will illuminate the MIL.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT TRANSMISSION WIRE (SL) |
Disconnect the transmission wire connector from the transaxle.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
4 - Body ground
| 20°C (68°F)
| 11 to 15 Ω
|
| 2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
Connect the transmission wire connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
B31-57 (SL) - Body ground
| 20°C (68°F)
| 11 to 15 Ω
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 3.INSPECT SHIFT SOLENOID VALVE SL |
Remove the shift solenoid valve SL.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
Solenoid Connector (SL) - Solenoid Body (SL)
| 20°C (68°F)
| 11 to 15 Ω
|
Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.
- OK:
- The solenoid valve makes an operating sound.
