SRS Indicator Stays ON With Ignition ON

The SRS Indicator Light Stays On After the Ignition Switch is Turned ON (II).

1. Erase the DTC memory.
2. Turn the ignition switch ON (II), and check that the SRS indicator light comes on for about six seconds and then goes off.

Does the SRS indicator light stay on?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.

3. Turn the ignition switch OFF.
4. Check for blown No.1 (10 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES - Go to step 8.

NO - Go to step 5.

5. Replace the No.1 (10 A) fuse.
6. Erase the DTC memory.
7. Turn the ignition switch ON (II).

Does the SRS indicator light go off after six seconds?

YES - The system is OK.

NO - Confirm the DTC, and go to step 8.

8. Turn the ignition switch OFF, then disconnect the battery negative cable, and wait for three minutes.




9. Disconnect the driver's airbag 2P connector (A), passenger's airbag 2P connector (B) and both seat belt tensioner 2P connectors (C).




10. Disconnect the floor wire harness 18P connector (A) from the SRS unit (B).
11. Reconnect the battery negative cable.




12. Connect a voltmeter between the No.4 terminal (+) of the floor wire harness 18P connector and body ground.
13. Turn the ignition switch ON (II).

Is there battery voltage?

YES - Go to step 14.

NO - Open in the floor wire harness (VB line); replace the harness.

14. Turn the ignition switch OFF, then disconnect the floor wire harness 8P connector from the SRS unit.




15. Connect terminals No.5 of the floor wire harness 8P connector and No.4 of the floor wire harness 18P connector with a jumper wire and backprobe adapters. Turn the ignition switch ON (II).

Does the SRS indicator light go off?

YES - Faulty SRS unit or poor contact at the floor wire harness 18P or floor wire harness 8P connector; check the connector. If the connector is OK, replace the SRS unit.

NO - Go to step 16.

16. Check the No.1 (10 A) fuse in the under-dash fuse/relay box.

Did fuse No.1 (10 A) blow?

YES - Go to step 17.

NO - Go to step 20.

17. Turn the ignition switch OFF.




18. Remove the gauge assembly. Disconnect the dashboard wire harness A 22P connector (A) from the gauge assembly.




19. Check resistance between the No.18 terminal of the dashboard wire harness A 22P connector and body ground. There should be 1 M ohm or more.

Is the resistance as specified?

YES - Short to ground in the gauge assembly; replace the gauge assembly.

NO - Go to step 27.

20. Turn the ignition switch OFF.
21. Remove the gauge assembly. Do not disconnect the connector from the gauge assembly.
22. Turn the ignition switch ON (II).




23. Connect terminals No.8 and No.18 of the dashboard wire harness A 22P connector with a jumper wire.

Does the SRS indicator light go off?

YES - Go to step 24.

NO - Faulty SRS indicator light circuit in the gauge assembly; replace the SRS printed circuit board in the gauge assembly.

24. Turn the ignition switch OFF.




25. Disconnect the dashboard wire harness A 22P connector (A) from the gauge assembly.




26. Check resistance between the No.18 terminal of the dashboard wire harness A 22P connector and No.5 terminal of the floor wire harness 8P connector; there should be 0 - 1.0 ohm.

Is the resistance as specified?

YES - Go to step 29.

NO - Go to step 32.




27. Disconnect the dashboard wire harness 16P connector (A) from the floor wire harness 16P connector (B).




28. Check resistance between the No.1 terminal of floor wire harness 16P connector and body ground. There should be 1 M ohm or more.

Is the resistance as specified?

YES - Short to ground in the dashboard wire harness A; repair the dashboard wire harness A.

NO - Short to ground in the floor wire harness; replace the floor wire harness.

29. Reconnect the floor wire harness 18P connector to the SRS unit.




30. Connect a voltmeter between the No.18 terminal (+) of the dashboard wire harness A 22P connector and body ground.
31. Turn the ignition switch ON (II), wait for six seconds, then measure voltage.

Is there 8.5 V or more?

YES - The problem corrected itself after disconnecting and connecting the connectors. Be sure all terminals make good contact, and recheck the system for an intermittent failure.

NO - Poor contact at the floor wire harness 18P connector; check the connector. If the connector is OK, substitute a known-good SRS unit, and recheck. If the connector is damaged, replace the floor wire harness.




32. Disconnect the dashboard wire harness A 16P connector (A) from the floor wire harness 16P connector (B).




33. Check resistance between the No.5 terminal of the floor wire harness 8P connector and No.3 terminal of the floor wire harness 16P connector; there should be 0 - 1.0 ohm.

Is the resistance as specified?

YES - Open in the PNK wire of dashboard wire harness A; repair dashboard wire harness A.

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