P0966

Diagnostic Chart:

Schematic:

The TCC lockup pressure control (PC) solenoid is used to apply and release the torque converter clutch (TCC). The TCC can be applied in 3rd, 4th, and 5th gear. The TCC solenoid also controls shift pressure while in 1st and 2nd gears. The TCC solenoid is pulse width modulated (PWM) by the TCM whenever the engine is running. The TCM controls the TCC solenoid by pulse with modulating an internal driver that pulls the solenoid circuit voltage. When shift solenoid 4 is ON, and the TCC PC solenoid is commanded ON, the TCC is applied. The TCC solenoid ground circuit is monitored for current flow. DTC P0966 sets if the TCM detects low current flow through the TCC lockup PC solenoid.

DTC PARAMETERS
DTC P0966 sets if low current is detected through the TCC lockup PC pressure control solenoid and:
^ The engine is running
^ Transaxle Protection Mode is OFF
^ Condition exists for at least 12.5 seconds

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

DTC P0966 is a type A DTC.

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

TCC lockup pressure control solenoid current: 92 mA-1356 mA

TCC lockup pressure control solenoid resistance: 3.8-8.3 ohms