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 tableInitialization
The following items must be initialized for normal system operation
after such cases as the battery being reconnected, or maintenance
being performed on the vehicle:
Item
When to initialize
Power back door*
After reconnecting or changing
the battery
...