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Home >> Cadillac >> 2016 >> SRX Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Body, Cab Control Systems >> Power Door Lock System And Release Systems >> Diagnostic Information and Procedures >> DTC B2500: Control Module >> Circuit/System Verification
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Circuit/System Verification

  1. Command all doors to UNLOCK by using the S13D Door Lock Switch - Driver.
  2. Verify the passenger, left rear and right rear doors LOCK when inserting the key into the door lock key cylinder and turning the key to the Lock position.
    • If the doors do not LOCK 

      Refer to Circuit/System Testing.

    • If the doors LOCK 
  3. All OK.
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