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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 B144A: Run Power Relay (Trax) >> 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 HVAC control module scan tool Ignition Signal parameter is 12.6-15V.
    • If not between 12.6-15 V 

      Refer to Circuit/System Testing - Diagnostic A.

    • If between 12.6-15 V 
  3. Verify the KR32E Blower Motor Relay and the KR74 Ignition Run Relay click ON and OFF when commanding the Auxiliary Ignition Run Relay On and Off with a scan tool.
    • If the KR32E Blower Motor Relay or the KR74 Ignition Run Relay do not turn ON and OFF 

      Refer to Circuit/System Testing- Diagnostic B.

    • If the KR32E Blower Motor Relay and the KR74 Ignition Run Relay click ON and OFF 
  4. All OK.
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