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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P15B9 or P15BA: Electric A/C Compressor Control Module Ignition On/Start Switch Circuit >> Circuit/System Verification

Circuit/System Verification

  1. Verify DTC B144B is not set.
    • If the DTC is not set 
  2. Ignition ON/Vehicle in Service Mode, verify that DTC P15B9, P15BA, P1A5E, P1A5F, P1EF6, P1EF7, P2534 or P2535 or is not set.
    • If two or more DTCs are set 

      Refer to Circuit/System Testing - Hybrid Powertrain Control Module 2 Circuit Malfunction.

    • If DTC P15B9 or P15BA are set 
  3. Refer to Circuit/System Testing - Electric A/C compressor Control Module Ignition Circuit Malfunction.
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