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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B144A: Run Power Relay >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the KR124 Trailer Ignition Power Relay clicks ON and OFF when commanding the Auxiliary Ignition Run Relay On and Off with a scan tool.
    • If the KR124 Trailer Ignition Power Relay does not click ON and OFF 

      Refer to Circuit/System Testing

    • If the KR124 Trailer Ignition Power Relay clicks ON and OFF 
  3. All OK.
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