System Description

WARNING: This page is about a different variant/trim than selected.

The ECM uses the signals from the throttle position sensor, air-flow meter, turbine (input) speed sensor, output speed sensor and crankshaft position sensor to monitor the engagement condition of the lock-up clutch.

Fig 1: View Of Spool Valve, Sleeve, Solenoid & Graph

The ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect shift solenoid valve SLU, valve body and torque converter clutch mechanical problems.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P2756-7F	Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck Off	Either condition is met (2-trip detection logic): Both conditions are met: Lock-up does not occur when requested. No. 3 ATF pressure switch is off. Both conditions are met: No. 3 ATF pressure switch is on when lock-up does not occur. Lock-up occurs when shift solenoid valve SLU is commanded to turn on in the lock-up range.	Shift solenoid valve SLU remains open or closed Valve body is blocked Torque converter assembly Automatic transaxle (clutch, brake, gear, etc.) Line pressure is too low	Comes on	DTC stored	SAE: P2757