Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 6)  - This step tests for battery voltage on the signal circuits that are not required.
2. 7)  - This step tests for no battery voltage on the required signal circuits.
3. 8)  - If any ignition switch parameters that should be inactive in the present ignition switch position are active, 2 ignition switch signal circuits may be shorted together.
4. 9)  - This step eliminates open circuits as the cause of the malfunction.
Fig 1: Power Mode Mismatch Diagnosis (Steps 1-6)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Power Mode Mismatch Diagnosis (Steps 7-14)
Courtesy of GENERAL MOTORS CORP.