Manufacturer Code Charts: 90

Adaptive Cruise Control (ACC) DTC Troubleshooting: 90

DTC 90: A/T Control System (Including PCM) Malfunction

1. Check for A/T System DTCs with the HDS.

Are any DTCs indicated?
YES - Troubleshoot the indicated A/T system DTC(s).

NO - Go to step 2.


2. Clear the DTCs with the HDS.

3. Test-drive the vehicle with the adaptive cruise control (ACC) activated.

4. Check for DTCs with the HDS.

Is DTC 90 indicated?
YES - Check for loose or poor connections. If OK, replace the ACC unit. Service and Repair

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.