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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wiring Systems And Power Management - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC B144A: RUN Power Relay >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the HVAC control module scan tool Ignition Signal parameter is 12.6-15V.
    • If not between 12.6-15V 

      Refer to Circuit/System Testing.

    • If between 12.6-15V 
  3. All OK.
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