Honda HR-V Owners & Service Manuals

Honda HR-V: DTC Troubleshooting U3003-68: Electric Parking Brake Control Unit Internal Circuit Malfunction (Power Self-Holding Circuit)

Honda HR-V (2015-2021) Service Manual / Brakes / VSA System - Diagnostics / DTC Troubleshooting / DTC Troubleshooting U3003-68: Electric Parking Brake Control Unit Internal Circuit Malfunction (Power Self-Holding Circuit)

NOTE: Before you troubleshoot, review the how to troubleshoot the electric parking brake system.

VSA System - Diagnostics

1. Problem verification:

  1. Turn the vehicle to the ON mode.
  2. Clear the DTC with the HDS.
  3. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
  4. Check for DTCs with the HDS.

VSA System - Diagnostics

Is DTC U3003-68 indicated?

YES

The failure is duplicated. Go to step 2.

NO

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting. 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. Fuse check:

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Check the following fuses.

VSA System - Diagnostics

VSA System - Diagnostics

Are the fuses OK?

YES

The fuse is OK. Reinstall the fuse, then go to step 3.

NO

Replace the fuse. If the fuse blows again, repair a short to ground in the No. D2-5 (30 A) and/or No. D2-2 (30 A) fuses circuit.

3. Open wire check (+B EPB L, +B EPB R lines):

  1. Disconnect the following connector.

Electric parking brake control unit 30P connector

  1. Measure the voltage between test points 1 and 2.

VSA System - Diagnostics

Is there battery voltage?

YES

The +B EPB L and +B EPB R wires are OK. Go to step 4.

NO

Repair an open or high resistance in the +B EPB L, +B EPB R wires between the electric parking brake control unit and the No. D2-2 (30 A) and/or No. D2-5 (30 A) fuses in the auxiliary under-dash fuse box A.

4. Open wire check (GND lines):

  1. Reconnect the following connector.

Electric parking brake control unit 30P connector

  1. Turn the vehicle to the ON mode.
  2. Measure the voltage between test points 1 and 2.

VSA System - Diagnostics

Is there 0.1 V or more?

YES

Repair an open in the GND wires between the electric parking brake control unit and body ground (G503).

NO

The GND wires are OK. Go to step 5.

5. Electric parking brake control unit check (update or substitution):

  1. Update the electric parking brake control unit if it does not have the latest software. If the unit already has the latest software, substitute a known-good electric parking brake control unit.
  2. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
  3. Check for DTCs with the HDS.

VSA System - Diagnostics

Is DTC U3003-68 indicated?

YES

Check for loose terminals and poor connections in the electric parking brake control unit 30P connector.

If the electric parking brake control unit was updated, substitute a known-good electric parking brake control unit and recheck. If the electric parking brake control unit was substituted and the symptom/indication is still present, replace the original electric parking brake control unit.

NO

If the electric parking brake control unit was updated, troubleshooting is complete. If the electric parking brake control unit was substituted, replace the original electric parking brake control unit.

    READ NEXT:

     DTC Troubleshooting U3006-13: IG1 Circuit Open

    NOTE: Before you troubleshoot, review the how to troubleshoot the electric parking brake system. 1. Problem verification: Turn the vehicle to the ON mode. Clear the DTC with the HDS. Turn the ve

     VSA DTC Troubleshooting 151-31: TPMS Switch Circuit Open

    NOTE: Pressing and holding the TPMS switch for more than 60 seconds will cause this DTC to set. Before you troubleshoot, review the general troubleshooting information. 1. Problem verification:

     DTC Advanced Diagnostics

    SEE MORE:

     Fuse to Components Index

    FUSE TO COMPONENTS INDEX 12 Volt Battery Terminal Fuse Box (A) *1: With keyless access system *2: AWD *3: With rear accessory power socket *4: With console accessory power socket Under-Hood Fuse/Relay Box (B) *1: With keyless access system *2: Without climate control *3: CVT *4: With heated winds

     Fuel Line/Quick-Connect Fitting Removal and Installation (KA/KC)

    Removal NOTE: Before you work on the fuel lines and fittings, read the Fuel Line/Quick-Connect Fitting Precautions. 1. Fuel Line/Quick-Connect Fitting - Remove If equipped, remove the quick-connect fitting cover Check the fuel quick-connect fittings (A) for dirt, and clean it if needed. Pl

    © 2019-2025 Copyright www.hohrv2.com