Overdrive Cancel Switch and Indicator Light

Description: The overdrive cancel switch is a momentary contact switch. When this switch is pressed, the indicator light comes on and a signal is sent to the processor assembly. The processor then energizes solenoid 4, applying the coast clutch and cancelling fourth gear operation.

NOTE: THE OVERDRIVE CANCEL SWITCH INDICATOR LIGHT WILL ALSO FLASH IF THE VARIABLE FORCE SOLENOID (VFS) IS SHORTED.

Sensor: Overdrive Cancel Switch (OCS)

Transmission function: Disable fourth gear operation

Symptoms No overdrive cancel when switch is cycled

Test codes 65 (Key On Engine Running (KOER) test only)


Actuator: Overdrive Cancel Indicator Light (OCIL)

Transmission function: Indicate overdrive caricel rnode (on) and EPC circuit failure (flashing)

Symptoms: Failed on - overdrive cancel mode always indicated, no flashing for EPC failure
Failed off - overdrive cancel mode never indicated, no flashing for EPC failure

Test codes: 97