DTC : U0101-00 (Multipurpose Camera Unit: 9-Speed A/T) (2016 2017 2018)
DTC U0101-00 : Lost Communication With The PCM/TCM
NOTE: Before you troubleshoot, review the general troubleshooting information - Go to: How to Troubleshoot the Adaptive Cruise Control (ACC) (2019 2020 2021) .
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Clear the DTC with the HDS.
Clear DTCs
- 3. Turn the vehicle to the OFF (LOCK) mode.
- 4. Turn the vehicle to the ON mode, then wait for at least 5 seconds.
- 5. Check for DTCs with the HDS.
Is DTC U0101-00 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Go to intermittent failures troubleshooting - Refer to: How to Troubleshoot the Adaptive Cruise Control (ACC) (2019 2020 2021) . If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
- Open wire check (F-CAN A_L, F-CAN A_H lines)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connectors.
Multipurpose camera unit 20P connector TCM 58P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Multipurpose camera unit 20P connector: disconnected TCM 58P connector: disconnected Test point 1 Multipurpose camera unit 20P connector No. 13 - Refer to:
Multipurpose Camera Unit Connector for Inputs and Outputs (20106 2017 2018)Test point 2 TCM 58P connector No. 47 - Refer to:
A/T Control System Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)Test point 1 Multipurpose camera unit 20P connector No. 2 - Refer to:
Multipurpose Camera Unit Connector for Inputs and Outputs (20106 2017 2018)Test point 2 TCM 58P connector No. 34 - Refer to:
A/T Control System Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)Is there continuity?
YES
The F-CAN A_L and F-CAN A_H wires are OK. Go to step 3.
NO
Repair an open in the wire between the multipurpose camera unit and the TCM.
- TCM check (substitution)
- 1. Reconnect the following connectors.
Multipurpose camera unit 20P connector TCM 58P connector - 2. Substitute a known-good TCM
- 3. Clear the DTC with the HDS.
Clear DTCs
- 4. Turn the vehicle to the OFF (LOCK) mode.
- 5. Turn the vehicle to the ON mode, then wait for at least 5 seconds.
- 6. Check for DTCs with the HDS.
Is DTC U0101-00 indicated?
YES
Go to step 4.
NO
Check for loose terminals and poor connections in the TCM 58P connector. If they are OK, replace the TCM .
- Multipurpose camera unit check (substitution)
- 1. Substitute a known-good Multipurpose Camera Unit
- 2. Turn the vehicle to the OFF (LOCK) mode.
- 3. Turn the vehicle to the ON mode, then wait for at least 5 seconds.
- 4. Check for DTCs with the HDS.
Is DTC U0101-00 indicated?
YES
Check for loose terminals and poor connections in the multipurpose camera unit 20P connector. If they are OK, replace the Multipurpose Camera Unit .
NO
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTC's troubleshooting.