Symptom Troubleshooting

Symptom Troubleshooting: SRS indicator stays on, but no DTCs are stored

SRS indicator stays on, but no DTCs are stored ('06-09 models)

NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures, Technician Safety Information General Troubleshooting Information, Initial Inspection and Diagnostic Overview and Battery Terminal Disconnection and Reconnection. Procedures

- If you cannot retrieve DTCs with the HDS using the SRS menu method, retrieve flash codes with the HDS in SCS mode.

- A new SRS unit must sense the entire system is OK before completing its initial self-test. The most common cause of an incomplete self-test is the failure to replace all deployed parts after a collision, in particular seat belt tensioners.

- A battery/system voltage above 15.2 V can cause the SRS indicator to come on without storing any DTCs.

1. Disconnect the negative cable from the battery, then wait at least 3 minutes.

2. Disconnect SRS unit connector A (28P) from the SRS unit.






3. Remove the gauge assembly. Service and Repair Disconnect gauge assembly connector B (30P) from the gauge assembly.






4. Measure the resistance between SRS unit connector A (28P) terminal No. 11 and gauge assembly connector B (30P) terminal No. 19. There should be less than 1.0 Ohms.

Is the resistance as specified?
YES - Go to step 5.

NO - Open in dashboard wire harness A or SRS main harness; replace the faulty harness.






5. Reconnect the negative cable to the battery.

6. Reconnect gauge assembly connector B (30P) to the gauge assembly.

7. Turn the ignition switch to ON (II).

8. Install a jumper wire between gauge assembly connector A (22P) terminal No. 9 and gauge assembly connector B (30P). terminal No. 19. The SRS indicator should go off.

Does the SRS indicator go off?
YES - Faulty SRS unit or poor connection at SRS unit 28P connector and the SRS unit; check the connection. If the connection is OK, replace the SRS unit. Service and Repair

NO - Faulty SRS indicator circuit in the gauge assembly or poor connection at gauge assembly connector A or B; check the connection. If the connection is OK, replace the gauge assembly.