Overdrive Switch: Testing and Inspection

Auto transaxle (electrical system)
O/D switch
Operation inspection
1. Turn ignition switch ON.





2. Verify that the O/D OFF indicator light is not illuminated. Depress O/D OFF switch and verify that the O/D OFF indicator light illuminates.
3. If O/D OFF indicator light does not operate, continue with inspection of voltage test

Inspection
Voltage
1. Remove Console
2. Turn ignition switch ON.





3. Measure voltage at O/D switch connector.

B+: Battery Positive Voltage





4. If not as specified, check for continuity at O/D switch

Continuity inspection
1. Disconnect negative battery cable.
2. Disconnect O/D switch connector.





3. Check for continuity at O/D switch.





4. Replace selector lever Knob if not as specified.
5. Check wiring harness for continuity if switch is operating correctly (O/D switch to transaxle control module, O/D switch to body ground).
6. Connect O/D switch connector.
7. Install console.
8. Connect negative battery cable.