Troubleshooting Intermittent Failures

If there was a malfunction that sets a DTC, but it does not recur, a DTC will be stored in the memory, and the SRS indicator may come on depending on the malfunction detected.

NOTE: 

• Check the condition of the 12 volt battery . Low battery voltage may cause some intermittent failures.
• A faulty or damaged cable reel can cause intermittent problems related to the driver's airbag inflator DTCs.

After checking the DTC, troubleshoot as follows:

1. Check for DTCs with the HDS.

2. Clear the DTCs with the HDS.

3. Set the parking brake, then start the engine, and let it idle.

4. The SRS indicator comes on for about 6 seconds and then goes off.

5. Shake the related wire harnesses and the connectors, and look for loose connections, poor pin fits, and poor grounds.

6. Take a test-drive (quick acceleration, quick braking, and cornering), turn the steering wheel fully left and right, and hold it there for 5 to 10 seconds. If the problem recurs, the SRS indicator will come on.

7. If you cannot duplicate the concern, ask the customer about the conditions when it occurred, or ask the customer to demonstrate the concern.

8. If you cannot duplicate the intermittent failure, the system is OK at this time.