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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Lock System And Release Systems >> Diagnostic Information and Procedures >> Trunk Release Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Trunk Lid/Liftgate Window Exterior Unlatch Switch parameter changes between Active and Inactive when pressing and releasing the S58A Rear Compartment Lid Unlatch Switch-Exterior.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Exterior Trunk Release Switch Inoperative

    • If the parameter changes 
  3. Verify the M40 Rear Compartment Lid Latch functions when commanding the Trunk Lid Unlatch with a scan tool.
    • If the M40 Rear Compartment Lid Latch does not function 

      Refer to Circuit/System Testing - Release Actuator Inoperative

    • If the M40 Rear Compartment Lid Latch does function 
  4. Verify the M40 Rear Compartment Lid Latch functions when pressing the S58B Rear Compartment Lid Unlatch Switch-Interior.
    • If the M40 Rear Compartment Lid Latch does not function 

      Refer to Circuit/System Testing - Interior Trunk Release Switch Inoperative

    • If the M40 Rear Compartment Lid Latch does function 
  5. All OK.
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