How to Troubleshoot DTCs: Notes

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 was originally.
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 that may be stored even when the system is normal: