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Symptoms - Fixed and Moveable Windows

Note: The following steps must be completed before using the symptom tables.

  1. Perform the Diagnostic System Check - Vehicle before using the symptom tables in order to verify that all of the following are true:
    2. • There are no DTCs set.
    • The control module(s) can communicate via serial data link.
  2. Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following:
    3. •  Power Windows Description and Operation
    •  Rear Window Defogger Description and Operation

Visual/Physical Inspection
    • Inspect for aftermarket devices which could affect the operation of the power windows or rear window demister. Refer to Checking Aftermarket Accessories .
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    •  Rear Window Defogger Malfunction : C60 → C68
    •  Power Windows Malfunction : Driver Window Express Up and Down → Standard Function → All Express Up/Express Down
   


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