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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B097C: Power Mode Run/Start Indicator Circuit >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness at the S38 Ignition Mode Switch.
  2. Connect a jumper wire between the S38 Ignition Mode Switch terminal 4 and ground.
  3. Connect a 3 A fused jumper wire between the S38 Ignition Mode Switch terminal 5 and B+.
  4. Verify the green LED illuminates.
    • If the LED does not illuminate 

      Replace the S38 Ignition Mode Switch.

    • If the LED illuminates 
  5. Connect a 3 A fused jumper wire between the S38 Ignition Mode Switch terminal 2 and B+.
  6. Verify the amber LED illuminates.
    • If the LED does not illuminate 

      Replace the S38 Ignition Mode Switch.

    • If the LED illuminates 
  7. All OK.