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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B144B: Run/Crank Power Relay >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the KR73 Ignition Main Relay (underhood) or the KR73 Ignition Main Relay (rear body) turn ON and OFF when commanding the Run/Crank relay On and Off with a scan tool.
    • If the KR73 Ignition Main Relay (underhood) or the KR73 Ignition Main Relay (rear body) do not turn ON and OFF 

      Refer to Circuit/System Testing.

    • If the KR73 Ignition Main Relay (underhood) and the KR73 Ignition Main Relay (rear body) turn ON and OFF 
  3. All OK.
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