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).
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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
- 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.
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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.
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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.
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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:
NOTE:
Do not use this troubleshooting procedure if any of the following items
are operative with the A/C button
and the fan control dial ON: The A/C condenser fan, the radiator fan, or the
A/C compressor. Refer to the symptom troubleshooting index - Refer to:
Heating and A/C Systems Symptom
* PLEASE READ THIS FIRST *
NOTE: Examples used in this article are general in nature and do not
necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine overhaul process. Descriptions of processes
of cleaning, inspection, asse