1. Operate the system and verify the malfunction indicated by the customer.
2. Referring to the following chart, perform visual inspection for obvious electrical malfunction.
Visual Inspection Chart
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Electrical malfunction
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• Central junction box (CJB) fuse
• Connector
• Circuit
• TNS relay
• Illumination bulb
• Instrument cluster
• Generic electronic module (GEM)
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3. If the cause of the indicated or obvious malfunction is detected, repair as necessary before going to the next step.
4. If the malfunction is not visually evident, go to the Symptom Troubleshooting Chart.