Honda HR-V: DTC U0122-00 Lost Communication With VSA

NOTE : Before you troubleshoot, review the how to troubleshooting information - Refer to: How to Troubleshoot the Forward Collision Warning (FCW), or How to Troubleshoot the Lane Departure Warning (LDW).

DTCs (FCW/LDW)

1. Problem verification.

1. Turn the vehicle to the ON mode.
2. Clear the DTC with the HDS.

Clear DTCs

3. Check for poor connections or loose terminals at the VSA modulator-control unit.
4. Turn the vehicle to the OFF (LOCK) mode.
5. Wait for 10 seconds.
6. Turn the vehicle to the ON mode.
7. Check for DTCs with the HDS.

Is DTC U0122-00 indicated?

YES

The failure is duplicated. Go to step 2.

NO

Intermittent failure, the system is OK at this time.

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

1. Turn the vehicle to the OFF (LOCK) mode.
2. Wait for 10 seconds.
3. Disconnect the following connectors.

Multi purpose camera unit 12P connector

VSA modulator-control unit 38P connector

4. Check for continuity between test points 1 and 2.

Is there continuity?

YES

Check for poor connections or loose terminals at VSA modulator-control unit. If OK, replace the VSA modulator-control unit.

NO

Repair an open in the wire between the VSA modulator-control unit and the multi purpose camera unit.

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