Flow of Diagnosis

Flow Of Diagnosis:

FLOW OF DIAGNOSIS

Driveability Worksheet (Part 1 0f 2):

Driveability Worksheet (Part 2 0f 2):

DRIVEABILITY WORKSHEETS

Service History Worksheet (Part 1 Of 2):

Service History Worksheets (Part 2 Of 2):

REPAIR HISTORY WORKSHEETS


1. Check for Technical Service Bulletins that apply to the vehicle being serviced. These bulletins may contain important information regarding warranty, recalls, revised service procedures, etc.
2. One of the most important checks that must be performed as part of any diagnostic procedure is a careful visual inspection. This can often locate problems without further testing. Be sure to inspect all vacuum hoses for correct routing, pinches or cuts, swollen or loose connections, etc. Check hoses that may be hidden under the air intake, A/C compressor, alternator or accessory brackets. Carefully check all electrical wiring for damage, bare or burned connections, etc. Be sure all wires to ECU controlled devices or sensors are at least 4 inches (100 mm) away from ignition coil or spark plug wires.
3. Some ignition system problems will set malfunction codes. Check the on-board diagnostics for codes and repair any problems indicated.
4. This list of symptoms and possible causes is used to aid in diagnosing problems or failures which do not store malfunction codes. Available troubleshooting charts are specific to the models for which they are provided.
5. This section contains tests of individual ignition system components.