Manufacturer Code Charts: 111

Adaptive Cruise Control (ACC) DTC Troubleshooting: 111

DTC 111:

Lost Communication With the PCM (A/T System)

1. Check the MIL on the gauge control module Initial Inspection and Diagnostic Overview.

Does the MIL stay on?

YES -

Go to the PGM-FI system's general troubleshooting information Initial Inspection and Diagnostic Overview.�

NO -

Go to step 2.

2. Clear the DTCs with the HDS.

3. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.

4. Press the MAIN switch ON.

5. Check for DTCs with the HDS.

Is DTC 111 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time.�

6. Test drive the vehicle, and check the data of vehicle speed signal with the HDS.

Does HDS correspond to the vehicle speed indicated in the gauge control module?

YES -

Go to step 12.

NO -

Go to step 7.

7. Press the engine start/stop button to select the OFF mode.

8. Disconnect the ACC unit 20P connector.

9. Jump the SCS line with the HDS, then disconnect PCM connector B (49P) Service and Repair.

10. Check for continuity between ACC unit 20P connector terminal No. 7 and PCM connector B (49P) terminal No. 47.





Is there continuity?

YES -

Go to step 11.

NO -

Repair an open in the wire between the ACC unit and the branch of the F-CAN B line (F-CAN B H).�

11. Check for continuity between ACC unit 20P connector terminal No. 18 and PCM connector B (49P) terminal No. 48.





Is there continuity?

YES -

Faulty PCM; replace the PCM Service and Repair.�

NO -

Repair an open in the wire between the ACC unit and the branch of the F-CAN B line (F-CAN B L).�

12. Press the engine start/stop button to select the OFF mode.

13. Disconnect the ACC unit 20P connector.

14. Jump the SCS line with the HDS, then disconnect PCM connector A (49P) Service and Repair.

15. Check for continuity between ACC unit 20P connector terminal No. 10 and PCM connector A (49P) terminal No. 48.





Is there continuity?

YES -

Go to step 16.

NO -

Repair an open in the wire between the ACC unit and the branch of the F-CAN A line (F-CAN A H).�

16. Check for continuity between ACC unit 20P connector terminal No. 20 and PCM connector A (49P) terminal No. 49.





Is there continuity?

YES -

Faulty PCM; replace the PCM Service and Repair.�

NO -

Repair an open in the wire between the ACC unit and the branch of the F-CAN A line (F-CAN A L).�