Honda HR-V: DTC U3003-16 Power Supply Voltage Too Low
NOTE : Before you troubleshoot, review the how to troubleshoot 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.
- Turn the vehicle to the ON mode.
- Clear the DTC with the HDS.
Clear DTCs
- Turn the vehicle to the OFF (LOCK) mode.
- Wait for 10 seconds.
- Test-drive the vehicle at 40 km/h (25 mph) or more with the LDW
activated.
NOTE : Drive the vehicle on the road, not on a lift.
- Check for DTCs with the HDS.
Is DTC U3003-16 indicated?
YES
Go to step 2.
NO
Intermittent failure, the system is OK at this time.
2. Fuse check.
- Turn the vehicle to the OFF (LOCK) mode.
- Wait for 10 seconds.
- Check the following fuse.
Is the fuse OK?
YES
The fuse is OK. Reinstall the fuse, then go to step 3.
NO
Replace the fuse. If the fuse blows again, repair the short to ground on the
No. C21 (10 A) fuse circuit.
3. Open wire check (+B MP CAMERA line).
- Disconnect the following connector.
Multi purpose camera unit 12P connector
- Measure the voltage between test points 1 and 2.
Is there more than 8.3 V?
YES
Check for poor connections or loose terminals at the multi purpose camera
unit. If OK, replace the multi
purpose camera unit.
NO
Repair an open in the wire between the under-dash sub fuse/relay box and the
multi purpose camera unit.
READ NEXT:
COMMUNICATION SYSTEMS DESCRIPTION (F-CAN) - OVERVIEW
F-CAN (High-speed CAN)
The network between the powertrain and control units for chassis system is
called F-CAN and it employs high
speed CAN with
NETWORK COMMUNICATION DTC TROUBLESHOOTING INDEX
NOTE : Record all DTCs, and sort them by DTC type using the DTC
troubleshooting index, then troubleshoot
the DTC(s) in this order:
Internal error DTC
SEE MORE:
NETWORK COMMUNICATION DTC TROUBLESHOOTING INDEX
NOTE : Record all DTCs, and sort them by DTC type using the DTC
troubleshooting index, then troubleshoot
the DTC(s) in this order:
Internal error DTCs
Loss of communication DTCs
Signal error DTCs
MICU
Gauge Control Module
Climate Control Unit
INSPECTION & ADJUSTMENT
IGNITION TIMING INSPECTION
Inspection
1. HDS DLC - Connect
NOTE: For specific operations, refer to the user's manual that came with the
HDS. Make sure the
HDS is loaded with the latest software.
Turn the vehicle to the OFF (LOCK) mode.
Connect the HDS to the DLC.
Tur