Honda HR-V: DTC B12E4 Electric Steering Lock High Level Failure of MTRCUT2
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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:
- Clear the DTCs with the HDS.
Clear DTCs
- Do this procedure 10 times: Turn the vehicle to the OFF (LOCK) mode,
ACCESSORY mode, ON
mode, and OFF (LOCK) mode.
- Check for DTCs with the HDS.
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Is DTC B12E4 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):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connector.
Electric steering lock 12P connector
- Check for continuity between test points 1 and 2.
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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 CUT2 (IG1) line):
- Disconnect the following connector.
Keyless access control unit connector B (36P)
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
The MTR CUT2 (IG1) 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.
READ NEXT:
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
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
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
SEE MORE:
■ABS
Helps prevent the wheels from locking up, and helps you retain steering
control by
pumping the brakes rapidly, much faster than you.
The electronic brake distribution (EBD) system, which is part of the ABS, also
balances the front-to-rear braking distribution according to vehicle loading.
The base current is a basic current value to drive the motor. Base current is
calculated using steering torque and
vehicle speed.
EPS motor torque tends to be lower as the vehicle begins to move, and higher as
it decreases in speed due to
inertia of the rotating body. Inertia compensation increas