DTC U0155-00: Lost Communication With The Gauge Control Module (Multi Purpose Camera Unit) (2018-19)
NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Adaptive Cruise Control (ACC) and How to Troubleshoot the Collision Mitigation Braking System (CMBS) .
- CAN gateway system DTC check
-1. Turn the vehicle to the ON mode.
- 2. Check for CAN gateway system DTCs with the HDS.
DTC Description DTC U0029-00 CAN Gateway F-CAN ch A Bus Off DTC Description DTC U0047-00 CAN Gateway F-CAN ch B Bus Off U3000-49 CAN Gateway Internal Failure Is DTC U0029-00, U0047-00, and/or U3000-49 indicated?
YES
Go to the indicated DTCs troubleshooting.
NO
Go to step 2.
- F-CAN circuit communication check
-1. Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.
F-CAN Bus Connected Unit Check
Which result is indicated?
Gauge control module (Bus A) is Not Available
Go to step 3.
Multipurpose camera unit (Bus A) is Not Available
Go to step 4.
Multipurpose camera unit and gauge control module are Detected
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting - Refer to: How to Troubleshoot the Adaptive Cruise Control (ACC) or How to Troubleshoot the Collision Mitigation Braking System (CMBS) . 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_L, F-CAN_H (L4 engine) or F-CAN A_L, F-CAN A_H lines (V6 engine))
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connectors.
CAN gateway 16P connector Gauge control module 32P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode CAN gateway 16P connector: disconnected Gauge control module 32P connector: disconnected Test point 1 CAN gateway 16P connector No. 11: Test point 2 Gauge control module 32P connector No. 28 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2018-19) Test point 1 CAN gateway 16P connector No. 3: Test point 2 Gauge control module 32P connector No. 27 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2018-19) Is there continuity?
YES
Check for loose terminals in the CAN gateway 16P connector and the gauge control module 32P connector. If they are OK, substitute a known-good gauge control module , then recheck. If DTC U0155-00 is not indicated after substitution, replace the gauge control module .
NO
Repair an open in the wire between the CAN gateway and the gauge control module.
- Open wire check (F-CAN_L, F-CAN_H (L4 engine) or F-CAN A_L, F-CAN A_H lines (V6 engine))
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connectors.
CAN gateway 16P connector Multipurpose camera unit 20P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode CAN gateway 16P connector: disconnected Multipurpose camera unit 20P connector: disconnected Test point 1 CAN gateway 16P connector No. 11 Test point 2 Multipurpose camera unit 20P connector No. 13 - Refer to: Multipurpose Camera Unit Connector for Inputs and Outputs (2018-19) Test point 1 CAN gateway 16P connector No. 3 Test point 2 Multipurpose camera unit 20P connector No. 2 - Refer to: Multipurpose Camera Unit Connector for Inputs and Outputs (2018-19) Is there continuity?
YES
Check for loose terminals in the multipurpose camera unit 20P connector. If the multipurpose camera unit was updated and the symptom/indication is still present, replace the multipurpose camera unit .
NO
Repair an open in the wire between the CAN gateway and the multipurpose camera unit.