Honda HR-V: DTC U0100, U0122, U0128, U0131, U0151 (Gauge Control Module)

NOTE:

• Refer to the DTC code shown on the display, and then inspect the connectors and terminals based on the instructions in the table below.
• The DTC may be stored due to the grounding failure or the power source failure at the transmitting control unit (the grounding inspection and the power source inspection on each control unit are required prior to this checking process).

DTC (Gauge Control Module)

NOTE:

• If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.
• If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first.

1. Problem verification.

1. Clear the DTCs with the HDS.

Clear DTCs

2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.

Is any of DTC indicated?

YES

Go to step 2.

NO

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmitting control units, and PCM. 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).

1. Turn the vehicle to the OFF (LOCK) mode.
2. Jump the SCS line with the HDS.

SCS short

3. Disconnect the receiving control unit connector.

Gauge control module connector A (32P)

4. Disconnect the transmitting control unit connectors. (Refer to the DTC code shown on the display, and then disconnect the connector(s) based on the instructions in the table below.)

PCM connector A (51P)

VSA modulator-control unit 21P connector

EPS control unit connector B (6P)

SRS unit connector A (39P)

Multi purpose camera unit 12P connector

5. Check for continuity between the receiving control unit and the transmitting control unit on the F-CAN_H circuit and the F-CAN_L circuit as specified in the table while in the vehicle OFF mode.

Is there continuity?

YES

The F-CAN_L and F-CAN_H wires are OK at this time, replace the transmitting control unit. (Refer to the DTC code shown on the display, and then replace the control unit based on the instructions in the table below.)

NO

Repair an open in the F-CAN_L and/or F-CAN_H wires between the receiving control unit and the transmitting control unit.

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