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Circuit/System Verification

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