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Overdrive Switch: Testing and Inspection

O/D OFF SWITCH INSPECTION
Inspection of Operation
1. Turn the ignition switch on.
2. Verify that the O/D OFF indicator is not illuminated. Press the O/D OFF switch and verify that the O/D OFF indicator light illuminates.
^ If not as specified, inspect the terminal voltage of the O/D OFF switch.


Inspection of Voltage
1. Remove-the front console.
2. Turn the ignition switch on.





3. Measure voltage at the O/D OFF switch connector terminals.





^ If not as specified, inspect the continuity of the O/D OFF switch.


Inspection of Continuity
1. Disconnect the negative battery cable.
2. Disconnect the O/D OFF switch connector.





3. Inspect continuity of the switch.





^ If not as specified, replace the selector lever knob component.
4. If the switch is OK, inspect the wiring harness. (O/D OFF switch- powertrain control module, O/D OFF switch-Body ground.)
5. Install the front console.
6. Connect the negative battery cable.