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DTC Troubleshooting: B12E4
DTC B12E4: Electric Steering Lock High Level Failure of MTRCUT2
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DTC Description |
DTC |
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B12E4 Electric Steering Lock High Level Failure of MTRCUT2 |
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NOTE: Before troubleshooting, make sure the No. B4 (15 A) and No. B31 (10 A) fuses in the under-dash fuse/relay box are OK.
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1. |
Problem verification:
Problem verification
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?1. |
Clear the DTCs with the HDS.
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?2. |
Do this procedure 10 times: Turn the vehicle to the OFF(LOCK) mode, ACCESSORY mode, ON mode, and OFF(LOCK) mode. |
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?3. |
Check for DTCs with the HDS.
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DTC Description |
DTC |
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B12E4 Electric steering lock high level failure of MTRCUT2 |
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Is DTC B12E4 indicated?
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Intermittent failure, the system is OK at this time. Check for loose or poor connections.? |
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2. |
Open wire check (GND line):
Open wire check (GND line)
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?1. |
Turn the vehicle to the OFF (LOCK) mode. |
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?2. |
Disconnect the following connector.
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Electric steering lock 12P connector | |
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?3. |
Check for continuity between test points 1 and 2.
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Test condition |
Vehicle OFF (LOCK) mode
Electric steering lock 12P connector: disconnected |
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Test point 1 |
Electric steering lock 12P connector No. 7 |
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Test point 2 |
Body ground | |
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Is there continuity?
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The SGND wire is OK. Go to step 3. |
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Repair an open or high resistance in the ground wire or poor ground (G502).? |
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3. |
Open wire check (MTR CUT2 (IG1) line):
Open wire check (MTR CUT2 (IG1) line)
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?1. |
Disconnect the following connector.
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Keyless access control unit connector C (24P) | |
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?2. |
Check for continuity between test points 1 and 2.
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Test condition |
Vehicle OFF (LOCK) mode
Electric steering lock 12P connector: disconnected
Keyless access control unit connector C (24P): disconnected |
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Test point 1 |
Electric steering lock 12P connector No. 4 |
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Test point 2 |
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Is there continuity?
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Repair an open or high resistance in the wire.? | |