CMBS Indicator Does Not Go Off (With ACC/CMBS)

Symptom Troubleshooting: CMBS indicator does not go off

CMBS indicator does not go off

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

2. Press and hold the CMBS OFF switch for a second or more to turn off the system.

3. Watch the CMBS indicator.

Does the CMBS indicator go off?
YES - The system is OK at this time.

NO - Go to step 4.


4. Turn the ignition switch to LOCK (0).

5. Connect the HDS to the data link connector.

6. Clear the DTCs with the HDS.

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

8. Check for the adaptive cruise control (ACC) system, VSA, and PCM DTCs with the HDS.

Are any DTCs indicated?
YES - Troubleshoot the indicated DTC(s).

NO - Go to step 9.


9. Start the engine, and wait at least 2 seconds.

10. Watch the CMBS indicator.

Does the CMBS indicator stay off?
YES - The system is OK at this time.

NO - Go to step 11.


11. Stop the engine.

12. Check for ACC system DTCs with the HDS.

Are any DTCs indicated?
YES - Troubleshoot the indicated DTC(s).

NO - Test the CMBS OFF switch. CMBS Off Switch Test/Replacement (With ACC/CMBS) If the switch is OK, do the gauge control module self-diagnostic function. How to Troubleshoot the Gauges and Indicators