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 and electrical damage.
| Mechanical factors | Electrical factors |
2. If an obvious cause for the problem you identified or the customer described is found, correct it (if possible) before moving on to further action.
3. If the cause is not visually obvious, check the symptom of the malfunction and contact table of signs of malfunction or check for DTCs and refer to the Index diagnostic trouble codes (DTC).
NOTE: All vehicles equipped with a Diagnostic Fuel Tank Leak (DMTL) unit are required to have a plug installed in the vent (large diameter tube) of the DMTL unit to prevent false diagnosis when performing emissions testing.
The full version is available on the website www.lrman.ru
4. Where K-Line, Vacutec or other proprietary exhaust toxicity testing equipment is available, it must be used to check the tightness of the fuel vapor removal system.
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