Diagnostic Instructions

Diagnostic Instructions

The Symptom Chart can be used to help locate the air bag SRS concerns if no DTCs are retrieved and the listed symptoms are observed. Whether or not the listed symptoms are observed, always carry out the following:
1. Retrieve all DTCs stored in the air bag control module memory. Go to the Retrieve/Clear Continuous DTCs. Retrieve/Clear Continuous DTCs
2. Carry out the On-Demand Self-Test to determine what DTCs are currently being sensed by the air bag control module. Go to the On-Demand Self-Test. On-Demand Self Test
3. If the stored DTCs are different than the current DTCs, always repair the current DTCs first.
4. If memory displays different continuous DTCs than the On-Demand Self-Test, carry out in the following order:
^ On-Demand Self-Test
^ Memory (Retrieve/Clear Continuous DTCs)

A DTC can indicate several concerns. The DTCs are to assist in system diagnosis and are not to be considered definitive. Always refer to the pinpoint test corresponding to the DTC to determine where the concern lies and to repair the concern correctly.

The SRS diagnostics can be divided into three sections:
^ Diagnostic test modes
^ PID/data monitor and record
^ Active command modes

Diagnostic Test Modes
Two menu options are available under the diagnostic test modes:
^ Retrieve/Clear Continuous DTCs
^ On-Demand Self-Test