Collision Mitigation Braking System (CMBS) Symptom Troubleshooting

Collision Mitigation Braking System (CMBS) Symptom Troubleshooting

CMBS indicator does not go off

1. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.

2. Press and hold the CMBS OFF switch for at least 1 second 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. Clear the DTCs with the HDS.

5. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.

6. Check for the ACC system, VSA, and PCM DTCs with the HDS.

Are any DTCs indicated?

YES -

Troubleshoot the indicated DTC(s).

NO -

Go to step 7.

7. Start the engine, and wait for 2 seconds.

8. Watch the CMBS indicator.

Does the CMBS indicator go off?

YES -

The system is OK at this time.

NO -

Go to step 9.

9. Stop the engine.

10. Check for ACC system DTCs with the HDS.

Are any DTCs indicated?

YES -

Troubleshoot the indicated DTC(s).

NO -

Test the CMBS OFF switch (built-in to the multi switch) Testing and Inspection. If the switch is OK, do the gauge control module self-diagnostic function Testing and Inspection.