Uplander FWD V6-3.5L VIN L (2006)
Body Control Module: Symptom Related Diagnostic Procedures
A Symptoms - Computer/Integrating Systems
SYMPTOMS - COMPUTER/INTEGRATING SYSTEMS
IMPORTANT: 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:
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There are no DTCs set.
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The control modules can communicate via the serial data links. See: Computers and Control Systems/Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures
2. Review the system operation in order to familiarize yourself with the system functions. Refer to:
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Data Link Communications Description and Operation
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Body Control System Description and Operation
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Retained Accessory Power (RAP) Description and Operation
Visual/Physical Inspection
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Inspect for aftermarket devices which could affect the operation of the systems.
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Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
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Scan Tool Does Not Power Up See: Computers and Control Systems/Information Bus/Testing and Inspection/Scan Tool Does Not Power Up
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Scan Tool Does Not Communicate with Class 2 Device See: Computers and Control Systems/Information Bus/Testing and Inspection/Scan Tool
Does Not Communicate with Class 2 Device
