Use Diagnostic Trouble Codes (DTCs) (from the DTC checks) in the table below to determine the trouble area and proper inspection procedure. The Supplemental Restraint System (SRS) diagnostic trouble code chart is shown below as an example.

Symptom simulation
Problem symptoms tableBulb locations
Front
Headlight high beam/daytime
running light
Headlight low beam
Front fog light (if equipped)
Front turn signal light/parking
light
Front side marker light
Rear
Tail light
Stop/tail light and rear side
marker light
Rear turn signal light
Back-up light
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