How to Troubleshoot DTCs

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Check and clear the DTCs with the HDS.

NOTE: When both the ACC and CMBS indicators come on, do the ACC system troubleshooting first (except DTC 100).

Before troubleshooting, check and note these items:

Ask the client about the conditions when the problem occurred, and try to reproduce the same conditions for troubleshooting.
If the symptom does not appear and the CMBS indicator does not come on during the test-drive, but troubleshooting is done based on the DTC, check for poor connections or loose terminals at all connectors related to the circuit that you are troubleshooting.
After the troubleshooting or repairs are done, clear the DTCs, and test-drive the vehicle under the same conditions as when the DTC occurred originally. Make sure the CMBS indicator does not come on.
The ACC system and the CMBS may sometimes stop working because of the environment (weather, road conditions, driving conditions, etc.). A DTC may be stored in these cases.

DTCs may be stored even when the system is normal:

NOTE: The ACC indicator will not come on, but the CMBS indicator does come on when the following DTCs are stored.

DTC 88: Millimeter wave radar out of detection condition

The millimeter wave radar overheats, the power supply voltage for the millimeter wave radar is low, or there is a communication error between the ACC unit and the millimeter wave radar.

DTC 95: Power supply voltage too high

DTC 96: Power supply voltage too low

DTC 97: CMBS offset cancel timeout

Extensive driving on a rough road or the ignition switch is turned to ON (II)/LOCK (0).

DTC 102: CMBS parking brake incomplete releasing

Parking brake not fully released, or driving with the parking brake stuck.