Overdrive Switch: Testing and Inspection

O/D OFF SWITCH
Inspection of operation:
1. Turn the ignition switch ON.
2. Verify that the O/D OFF indicator light is not illuminated. Depress the O/D OFF switch and verify that the O/D OFF indicator light illuminates.
3. If not as specified, check the terminal voltage of the O/D OFF switch.







Inspection of voltage:
1. Remove the rear console and front console.
2. Turn the ignition switch to ON.
3. Measure the voltage at the O/D OFF switch connector terminals.
4. If not as specified, check for continuity at the O/D OFF switch.

Inspection of continuity:
1. Disconnect the negative battery cable.
2. Disconnect the O/D OFF switch connector.
3. Check for continuity at the O/D OFF switch.
4. If not as specified, replace the selector lever knob.
5. If the switch is OK, check the wiring harness. (O/D OFF switch - Powertrain control module, O/D OFF switch - Body ground.)
6. Connect the O/D OFF switch connector.
7. Install the front console and rear console.
8. Connect the negative battery cable.