On-Demand Self Test

On-Demand Self Test
The On-Demand Self Test option is used to verify that no electrical concerns exist with the air bag Supplemental Restraint System (SRS). Upon entering the self test, the air bag Electronic Crash Sensor (ECS) module will make an electrical check of each electrical component in the system. If a concern is detected, a DTC is displayed on the scan tool with a brief description of the DTC. Concerns detected during the self test are not stored in memory, unless the same concern was also detected during normal vehicle operation. The self test should always be run after any repair to verify that the repair was successful.

To run the On-Demand Self Test, follow these steps:
1. Connect the scan tool to the Data Link Connector (DLC).
2. Turn the ignition switch to the RUN position.
3. Follow manufacturer's instructions for the scan tool being used.
4. The ECS will run the On-Demand Self Test and display on-demand DTCs (reflecting hard system concerns) on the screen.