P2770

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 to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.

P2769-P2770:

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

MONITOR DESCRIPTION
Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the ECM sends a signal to the solenoid valve SL to regulate the hydraulic pressure and provide smoother gear shifts. 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, it will illuminate the MIL.

MONITOR STRATEGY

MONITOR STRATEGY:

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS:

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS:

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE:

WIRING DIAGRAM

WIRING DIAGRAM: