| Diagnosis and Testing Inspection and Verification - Verify the customer concern.
- Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart | Electrical | - Fuse(s)
- Relay
- Wiring harness
- Electrical connector(s)
- Glow plug(s)
- Glow plug wire
- Powertrain control module (PCM)
| - If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the symptom and refer to WDS to diagnose the system.
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