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Inspection And Verification

CAUTION: Diagnosis by substitution from a donor vehicle is NOT  acceptable. Substitution of control modules does not guarantee confirmation of a fault and may also cause additional faults in the vehicle being checked and/or the donor vehicle
NOTE:
  • If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the warranty policy and procedures manual (B1.2), or determine if any prior approval program is in operation, prior to the installation of a new module/component
  • Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests
  1. Verify the customer concern
  2. Visually inspect for obvious signs of mechanical or electrical damage

    VISUAL INSPECTION CHART 

    MECHANICAL ELECTRICAL
    • Door switchpacks condition and installation
    • Door window motors/regulators
    • Door window channels/runners
    • Door window cables
    • Fuses
    • Harnesses and connectors
    • Door window lift relay
    • Door switchpacks
    • Door window motors
    • Windshield heater elements and connector
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
  4. If the cause is not visually evident, verify the symptom and refer to the symptom chart, alternatively check for diagnostic trouble codes (DTCs) and refer to the DTC Index.
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