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).
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DTCs (FCW/LDW)
1. Problem verification.
- Turn the vehicle to the ON mode.
- Clear the DTC with the HDS.
Clear DTCs
- Check for poor connections or loose terminals at the VSA modulator-control unit.
- Turn the vehicle to the OFF (LOCK) mode.
- Wait for 10 seconds.
- Turn the vehicle to the ON mode.
- 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).
- Turn the vehicle to the OFF (LOCK) mode.
- Wait for 10 seconds.
- Disconnect the following connectors.
Multi purpose camera unit 12P connector
VSA modulator-control unit 38P connector
- Check for continuity between test points 1 and 2.
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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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