DTC B12C7

DTC B12C7  : Electric Steering Lock Motor Circuit Failure

NOTE:  If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .

DTC (Keyless Access Power Control Unit)

1. Problem verification

   -1. Clear the DTCs with the HDS.

   -2. Do this procedure ten times: Press the engine start/stop switch to select the OFF (LOCK), ACCESSORY, ON, and OFF (LOCK) mode.

   -3. Check for DTCs with the HDS.

   DTC Description	DTC
   B12C7 Electric Steering Lock Motor Circuit Failure

   Is DTC B12C7 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

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Electric steering lock 12P connector: disconnected
   Test point 1	Electric steering lock 12P connector (female terminals) No. 7:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   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. Shorted wire check (MTR CUT1(CONT), MTR CUT2(IG1) lines)

   -1. Disconnect the following connector.

   Body control module connector G (32P)

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

   Test condition	Vehicle OFF (LOCK) mode Electric steering lock 12P connector: disconnected Body control module connector G (32P): disconnected
   Test point 1	Electric steering lock 12P connector (female terminals) No. 2:
   Test point 2	Body ground

   Test point 1	Electric steering lock 12P connector (female terminals) No. 4:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short to ground in the wire.

   NO 

   The MTR CUT1(CONT) and MTR CUT2(IG1) wires are not shorted. Go to step 4.

4. Open wire check (MTR CUT1(CONT), MTR CUT2(IG1) lines)

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

   Test condition	Vehicle OFF (LOCK) mode Electric steering lock 12P connector: disconnected Body control module connector G (32P): disconnected
   Test point 1	Body control module connector G (32P) No. 6
   Test point 2	Electric steering lock 12P connector (female terminals) No. 2:

   Test point 1	Body control module connector G (32P) No. 7
   Test point 2	Electric steering lock 12P connector (female terminals) No. 4:

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The MTR CUT1(CONT) and MTR CUT2(IG1) wires are OK. Replace the electric steering lock . If the DTC is still present, replace the body control module .

   NO 

   Repair an open or high resistance in the wire.