PRE-RELEASE
Symptoms - Lighting
| Symptoms - Lighting |
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The following steps must be completed before using a symptom table. |
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Perform the
Diagnostic System Check - Vehicle
before using a symptom table in order to verify that all of the following conditions 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.
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Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following:
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Exterior Lighting Systems Description and Operation
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Interior Lighting Systems Description and Operation
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| Visual/Physical Inspection |
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Inspect for aftermarket devices which could affect the operation of the lighting system. Refer to
Checking Aftermarket Accessories
.
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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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| 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:
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Adaptive Forward Lighting Malfunction
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Backup Lamps Malfunction
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Courtesy Lamps Malfunction
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Daytime Running Lamps Malfunction
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Front Fog Lamps Malfunction
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Hazard Lamps Malfunction
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Headlamps Malfunction
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Headlamp Leveling Malfunction (RPO T84 or T85)
Headlamp Leveling Malfunction (RPO TT6, TT7 or TT8)
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High Intensity Discharge Lamp Malfunction
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Interior Accent Lighting Malfunction
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Interior Backlighting Malfunction
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Park, License, and/or Tail Lamps Malfunction
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Rear Fog Lamps Malfunction
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Stop Lamps Malfunction
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Turn Signal Lamps and/or Indicators Malfunction
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