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 tableInspection
1. INSPECT SEAT HEATER (FRONT) SWITCH LH
(a) Check the resistance between the terminals when the
switch is operated.
Standard:
If the result is not as specified, replace the seat heater switch.
(b) Push the seat heater switch ON and check that the seat
heater switch indicator illuminat ...