Troubleshooting

DTC P0743 TORQUE CONVERTER CLUTCH CIRCUIT ELECTRICAL (SHIFT SOLENOID VALVE SL)

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.

Fail sate function
If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.

Wiring Diagram:

Step 1 - 3:

INSPECTION PROCEDURE