TCM Self-Diagnosis Does Not Activate

TROUBLE DIAGNOSIS FOR SYMPTOMS


TCM Self-Diagnosis Does Not Activate


SYMPTOM:
OD OFF indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit is good.

DESCRIPTION
- PNP switch





PNP switch assembly includes a transaxle position switch. The transaxle position switch detects the selector lever position and sends a signal to the TCM.
- Overdrive control switch





Overdrive control switch detects the switch position (ON or OFF) and sends the signal via CAN communication to the TCM.
- Closed throttle position signal and wide open throttle position signal





ECM judges throttle opening based on a signal from accelerator pedal position sensor, and sends the signal via CAN communication to the TCM.

DIAGNOSTIC PROCEDURE

NOTE:
The diagnostic procedure includes inspection for the PNP stitch, overdrive control switch, closed throttle position signal and wide open throttle position signal circuit. Refer to CONSULT-III Reference Value In Data Monitor Mode TCM Terminal And Reference Value Diagnosis Procedure .