ACC Indicator Does Not Go Off

Adaptive Cruise Control (ACC) Symptom Troubleshooting - ACC indicator does not go off

ACC indicator does not go off

1. Check for DTCs with the HDS.

Are any DTCs indicated?

YES -

Troubleshoot the indicated DTC(s).�

NO -

Go to step 2.

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

3. Watch the ACC indicator.

Does the ACC indicator (amber) go off?

YES -

Intermittent failure, the system is OK at this time. Check for loose or poor connections.�

NO -

Go to step 4.

4. Check for ACC system DTCs with the HDS.

Are any DTCs indicated?

YES -

Troubleshoot the indicated DTC(s).�

NO -

Go to step 5.

5. Check for PGM-FI system DTCs with the HDS Initial Inspection and Diagnostic Overview.

Is DTC U0155 indicated?

YES -

Go to step 6.

NO -

Go to the gauge control module self-diagnostic function Initial Inspection and Diagnostic Overview.�

6. Check for VSA system DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Is DTC 91 indicated?

YES -

Go to step 7.

NO -

Go to the gauge control module self-diagnostic function Initial Inspection and Diagnostic Overview.�

7. Check for ACC system DTCs with the HDS.

Is DTC 107 indicated?

YES -

Aim the millimeter wave radar Adjustments.�

NO -

Go to step 8.

8. Check for CMBS DTCs with the HDS How to Troubleshoot the Collision Mitigation Braking System (CMBS).

Is DTC 100 indicated?

YES -

Troubleshoot the indicated DTC(s).�

NO -

Go to the ACC system troubleshooting (No DTC indication) Adaptive Cruise Control (ACC) System Troubleshooting (No DTC Indication). If OK, update the ACC unit Programming and Relearning, then recheck. If the ACC unit was already updated, replace the ACC unit Service and Repair.�