Honda HR-V Owners & Service Manuals

Honda HR-V: DTC B12E3 Electric Steering Lock High Level Failure of MTRCUT1

Keyless Access Power Control Unit - Diagnostics

DTC (Power Control Unit)

NOTE:

  • If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.
  • Before troubleshooting, make sure the No. C32 (15 A) and No. C3 (10 A) fuses in the under-dash fuse/relay box are OK.

1. Problem verification:

  1. Clear the DTCs with the HDS.

Clear DTCs

  1. Do this procedure 10 times: Turn the vehicle to the OFF (LOCK) mode, ACCESSORY mode, ON mode, and OFF (LOCK) mode.
  2. Check for DTCs with the HDS.

Keyless Access Power Control Unit - Diagnostics

Is DTC B12E3 indicated?

YES

Go to step 2.

NO

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Open wire check (GND line):

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Disconnect the following connector.

Electric steering lock 12P connector

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

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Is there continuity?

YES

The GND wire is OK. Go to step 3.

NO

Repair an open or high resistance in the ground wire or poor ground (G401).

3. Open wire check (MTR CUT1 (CONT) line):

  1. Disconnect the following connector.

Keyless access control unit connector B (36P)

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

Keyless Access Power Control Unit - Diagnostics

Keyless Access Power Control Unit - Diagnostics

Is there continuity?

YES

The MTR CUT1 (CONT) wire is OK. Faulty electric steering lock, replace the steering lock. If the DTC is still present, replace the keyless access control unit.

NO

Repair an open or high resistance in the wire.

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