Manufacturer Code Charts: 111

Adaptive Cruise Control (ACC) DTC Troubleshooting: 110, 111

DTC 110: Lost Communication with the PCM (PGM-FI System)

DTC 111: Lost Communication with the PCM (A/T System)

1. Check for PGM-FI system DTCs with the HDS.

Are any DTCs indicated?
YES - Troubleshoot the indicated PGM-FI system DTC(s).

NO - Go to step 2.


2. Check the DTCs with the HDS.

3. Turn the ignition switch to ON (II) and the adaptive cruise control (ACC) switch ON.

4. Check for DTCs with the HDS.

Is DTC 110 or 111 indicated?
YES - Go to step 5.

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


5. Turn the ignition switch to LOCK (0).

6. Disconnect the ACC unit 20P connector.

7. Jump the SCS line with the HDS, then disconnect PCM connector E (31P). Service and Repair

8. Check for continuity between ACC unit 20P connector terminal No. 10 and PCM connector E (31P) terminal No. 15.

Is there continuity?
YES - Go to step 9.

NO - Repair an open in the wire between the ACC unit and the branch of the F-CAN line (CANH).






9. Check for continuity between ACC unit 20P connector terminal No. 20 and PCM connector E (31P) terminal No. 26.

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

NO - Repair an open in the wire between the ACC unit and the branch of the F-CAN line (CANL).