Symptoms - Fixed and Moveable Windows
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Symptoms - Fixed and Moveable Windows
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Important Preliminary Checks Before Starting:
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The control modules can communicate via the serial data link.
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Review the power window system operation or rear window defogger system operation in order to familiarize yourself with the system functions. Refer to the following:
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Visual/Physical Inspection
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Inspect for easily accessible or visible system components for obvious damage or conditions which may cause the symptom.
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Note
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Inspect for proper installation of electrical components if an intermittent condition exists. Inspect for aftermarket theft deterrent devices, lights, and cellular phones. Check that no after-market equipment is connected to the class 2 circuit. If you cannot localize an intermittent problem, a cellular phone signal may be causing the problem. Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to
Testing for Intermittent Conditions and Poor Connections
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The problem may illuminate the SERVICE VEHICLE SOON indicator or store a DTC. Do not use the symptom tables to diagnose intermittent conditions. The malfunction must be present in order to locate the problem.
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Poor electrical connections or wiring cause most intermittent conditions. Perform a careful visual/physical check for the following conditions:
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Poor mating of the connector halves or a terminal not fully seated in the connector body
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An improperly formed or damaged terminal
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Reform or replace connector terminals in the problem circuit in order to ensure proper contact tension.
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Poor terminal to wire connection requires removing the terminal from the connector body in order to perform the check.
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Use a scan tool in order to help detect intermittent conditions. The scan tool has several features that can be used to locate an intermittent condition. The snapshot feature can capture and store data parameters within the scan tool when the malfunction occurs. This information can then be reviewed in order to see what caused the malfunction.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom: