Colorado 4WD V8-5.3L (2010)
Keyless Entry: Symptom Related Diagnostic Procedures
Symptoms - Remote Functions
Symptoms - Remote Functions
Important: The following steps must be completed before using the symptom tables.
1. Perform Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/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 link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Keyless Entry System Description and Operation
(See: Description and Operation).
Visual/Physical Inspection
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Inspect for aftermarket devices which could affect the operation of the Keyless Entry System. Refer to Checking Aftermarket Accessories (See:
Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Checking Aftermarket Accessories).
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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. Refer to Testing for Intermittent Conditions and Poor Connections (
See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit Testing/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:
Keyless Entry System Inoperative (See: Keyless Entry System Inoperative)
Keyless Entry System Inoperative
Keyless Entry System Inoperative
Diagnostic Instructions
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Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
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Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
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Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure Instructions)
provides an overview of each diagnostic category.
Diagnostic Fault Information
