How to Troubleshoot DTCs

Check the DTCs with the HDS.

NOTE:  For RDM system DTCs, refer to the DTC troubleshooting index .

Before troubleshooting, check and note these items:

• Ask the customer about the conditions when the problem occurred, and try to reproduce the same conditions for troubleshooting.
• If the symptom does not appear and the RDM indicator does not come on while test-driving, but your troubleshooting was 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 set. Make sure the RDM indicator does not come on.
• The RDM system sometimes stops operating because of the environment (weather, road conditions, driving conditions, etc.). Intermittent failure DTCs may be stored in these cases.