Symptom Troubleshooting

Symptom Troubleshooting: SRS indicator stays on, but no DTCs are stored, or cannot be read

SRS indicator stays on, but no DTCs are stored, or cannot be read

NOTE:

- 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. Procedures

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

- Before this troubleshooting, review Battery Terminal Disconnection and Reconnection. Procedures

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. Service and Repair

3. Remove the gauge control module. Service and Repair Disconnect gauge control module connector A (20P) from the gauge control module.

4. Measure the resistance between gauge control module connector A (20P) terminal No. 12 and SRS unit connector A (28P) terminal No. 11. There should be less than 1.0 Ohms.

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

NO - Open in the dashboard wire harness; replace the dashboard wire harness.

5. Reconnect the negative cable to the battery.

6. Reconnect gauge control module connector A (20P) to the gauge control module.

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

8. Install a jumper wire between gauge control module connector A (20P) terminal No. 12 and gauge control module connector B (28P) terminal No. 1. The SRS indicator should go off.

Does the SRS indicator go off?
YES - Faulty SRS unit or poor connection at SRS unit connector A (28P) and the SRS unit; check the connection. If the connection is OK, replace the SRS unit. SRS Unit Replacement

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