Inspection and verification
1. Check the validity of the customer's complaint.
2. Visually inspect for any obvious mechanical or electrical damage.
Visual inspection
|
Mechanical factors |
Electrical Factors |
|
• Coolant level • Additional electric heater with coolant heating |
• Fuses • Wiring harness • Plug |
3. ELIMINATE any obvious causes of problems found during the visual inspection before performing any further checks. CHECK the system is working properly.
4. If the problem persists after visual inspection, PERFORM troubleshooting using WDS and REPAIR any problems found, proceeding according to the nature of the problem. CHECK the system is working properly.
5. If there is no fault in memory, REFER to the Symptom Chart and CONTINUE according to the symptom.
Symptom table
|
State |
Possible Causes |
Action |
|
•Additional electric heater with coolant heating does not work/partially does not work |
•Fuse (And) •Electrical circuit (And). • Auxiliary heater glow plug relay, level 1. • Auxiliary heater glow plug relay, level 2. •Additional electric heater with coolant heating. •Powertrain control module (RSM) • Air intake temperature signal. |
• Go to PINPOINT TEST B |
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