SRS Troubleshooting Strategy

Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find a SRS fault.
1. Gather information about the problem from the customer.
2. Verify that the condition described by the customer exists.
3. Check the vehicle for any Diagnostic Trouble Code (DTC).
4. If you cannot verify the condition but there are no DTCs, the malfunction is intermittent. Refer to How to use Troubleshooting/Inspection Service Point - How to Cope With Intermittent Malfunctions.
5. If there is a DTC, record the number of the code, then erase the code from vehicle memory using scan tool MB991502.
6. Recreate the DTC set conditions to see if the same DTC will set again.
- If the same DTC sets again, follow the DTC Chart and find the fault.
- If you cannot get the same DTC to set again, the malfunction is intermittent. Refer to How to use Troubleshooting/Inspection Service Point - How to Cope With Intermittent Malfunctions.