Overdrive Switch Circuit Test

DESCRIPTION
Detects the overdrive control switch position (ON or OFF) and sends a signal to the A/T control unit.

OVERALL FUNCTION CHECK
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT
1. Start engine.




2. Select "SELF-DIAG RESULTS" mode for ECM with CONSULT.
3. Drive vehicle under the following conditions:
Selector lever in D, OD control switch in "OFF" position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/2 of the full throttle position and driving for more than 5 seconds.

OR

WITH GST
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in D, OD control switch in "OFF" position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/2 of the full throttle position and driving for more than 5 seconds.




3. Select "MODE 3" with GST.

OR

WITH NO TOOLS
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in D, OD control switch in "OFF" position, vehicle speed higher than 10 km/h (6 MPH), throttle opening greater than 1/2 of the full throttle position and driving for more than 5 seconds.
3. Perform self-diagnosis for ECM.










DIAGNOSTIC PROCEDURE