CAUTION: Diagnosis by substituting a component from another vehicle is NOT allowed. Substitution of control modules does not guarantee confirmation of the fault and, in addition, may cause additional faults in the vehicle being tested and/or in the vehicle from which the modules are removed.
1. Visually check for obvious signs of mechanical and electrical problems and system integrity.
Mechanical factors | Electrical Factors |
2. If an obvious cause of the problem you identified or the customer described is found, resolve it before proceeding to the next steps (if possible).
3. If the cause is not visually obvious, check the symptom and contact symptom table or check for DTCs and refer to the Index diagnostic trouble codes (DTC).
Comments on this article