P0963

Diagnostic Chart:

Schematic:

The line pressure control (PC) solenoid is used to control main line pressure to the transaxle hydraulic system. The line pressure control solenoid is pulse width modulated (PWM) by the transaxle control module (TCM) whenever the engine is running. The TCM controls the line pressure control solenoid with an internal driver that pulls the solenoid circuit voltage. When the line pressure control solenoid is commanded Off, main line pressure is highest. During normal shift operation, the TCM will PWM the line pressure control solenoid in order to prevent clutch slip and harsh shifts. The line pressure control solenoid ground circuit is monitored for current flow. DTC P0963 sets if the TCM detects high current flow through the line pressure control solenoid.

DTC PARAMETERS
DTC P0963 sets if low current detected through the line pressure control solenoid and:
^ The engine is running
^ Transaxle Protection Mode is OFF
^ Condition exists for at least 2 seconds

The TCM will command Transaxle Protection Mode ON if this DTC is active.

DTC P0963 is a type A DTC.

DIAGNOSTIC AIDS
To locate an intermittent problem, use a scan tool to monitor Line PC Solenoid Actual Current with ignition ON, engine Off. Wiggling wires watching for a change on Line PC Solenoid Actual Current may locate the area where an open or high resistance in the wiring could lie.

Line pressure control solenoid current: 92-1356 mA

Line pressure control solenoid resistance: 3.8-8.3 ohms