CAUTION: Diagnostics by substituting a component from another vehicle is NOT permitted. Substituting 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 inspect for obvious signs of mechanical, electrical or hydraulic failure.
| Mechanical factors | Electrical factors | Hydraulic |
2. If an obvious cause for the problem you have identified or the problem described by the customer is found, correct it (if possible) before proceeding with further actions.
3. Use an approved diagnostic system or scan tool to retrieve all diagnostic trouble codes (DTCs) before accessing the DTC Index.
[The original text was published on the website: lrman.ru]
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