Inspection And Verification
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION
Mechanical Electrical - Coolant level
- Coolant leaks
- Oil level
- Oil leaks
- Visibly damaged or worn parts
- Loose or missing nuts or bolts
- Wiring harness
- Electrical connector(s)
- Injectors
- Glow plugs
- 5 volt sensor supply
- Sensor(s)
- Cooling fan control module and motor
- Engine Control Module (ECM)
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 concern is not visually evident, verify the symptom and refer to the relevant Symptom Chart. Symptom Charts have been separated into Leaks and Noise Vibration and Harshness (NVH) for ease of use. Alternatively, check for Diagnostic Trouble Codes (DTCs) and refer to the relevant DTC Index.