DTC U0155-00: Lost Communication With The Gauge Control Module (Multi Purpose Camera Unit) (Without ACC)

NOTE: Before you troubleshoot, review the general troubleshooting information .

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

   - 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 U0155-00 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting . 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.

2. Open wire check (F-CAN_L, F-CAN_H lines) (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.

   Multipurpose camera unit 20P connector

   Gauge control module 32P connector

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Multipurpose camera unit 20P connector: disconnected
   	Gauge control module 32P connector: disconnected
   Test point 1	Multipurpose camera unit 20P connector No. 13 - Refer to: Multipurpose Camera Unit Connector for Inputs and Outputs (2015-17) or Multipurpose Camera Unit Connector for Inputs and Outputs (2018-19)
   Test point 2	Gauge control module 32P connector No. 28 - Refer to: Gauge Control Module Connector for Inputs and Outputs (Without SH-AWD) (2015-17) or Gauge Control Module Connector for Inputs and Outputs (With SH-AWD) (2015-17) or Gauge Control Module Connector for Inputs and Outputs (2018-19)

   Test point 1	Multipurpose camera unit 20P connector No. 2 - Refer to: Multipurpose Camera Unit Connector for Inputs and Outputs (2015-17) or Multipurpose Camera Unit Connector for Inputs and Outputs (2018-19)
   Test point 2	Gauge control module 32P connector No. 27 - Refer to: Gauge Control Module Connector for Inputs and Outputs (Without SH-AWD) (2015-17) or Gauge Control Module Connector for Inputs and Outputs (With SH-AWD) (2015-17) or Gauge Control Module Connector for Inputs and Outputs (2018-19)

   Is there continuity?

   YES 

   The F-CAN_L, F-CAN_H wires (L4 engine) or F-CAN A_L, F-CAN A_H wires (V6 engine) are OK. Go to step 3.

   NO 

   Repair an open in the wire between the multipurpose camera unit and the gauge control module.

3. Gauge control module check (substitution)

   -1. Substitute a known-good gauge control module.

   - 2. Turn the vehicle to the ON mode.

   - 3. Clear the DTC with the HDS.

   - 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 U0155-00 indicated?

   YES 

   Go to step 4.

   NO 

   Replace the gauge control module .

4. Multipurpose camera unit check (update)

   -1. Update the multipurpose camera unit if it does not have the latest software.

   - 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 U0155-00 indicated?

   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 

   Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTC's troubleshooting.