DTC B12C6

DTC B12C6  : Electric Steering Lock Switch C/D Monitor 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. Press the engine start/stop switch at least ten times.

   -3. Check for DTCs with the HDS.

   DTC Description	DTC
   B12C6 Electric Steering Lock Switch C/D Monitor Circuit Failure

   Is DTC B12C6 indicated?

   YES 

   Go to step 2.

   NO 

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

2. ESL SW line check 1

   -1. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Electrical Steering Lock SWITCH C	OFF
   Electrical Steering Lock SWITCH D	OFF

   Are ELECTRICAL STEERING LOCK SWITCH C and ELECTRICAL STEERING LOCK SWITCH D data list values OFF?

   YES 

   Go to step 9.

   NO 

   Go to step 3.

3. ESL SW line check 2

   -1. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Electrical Steering Lock SWITCH C	OFF
   Electrical Steering Lock SWITCH D	OFF

   Are ELECTRICAL STEERING LOCK SWITCH C data list value OFF?

   YES 

   Go to step 10.

   NO 

   Go to step 4.

4. ESL SW line check 3

   -1. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Electrical Steering Lock SWITCH C	OFF
   Electrical Steering Lock SWITCH D	OFF

   Are ELECTRICAL STEERING LOCK SWITCH D data list value OFF?

   YES 

   Go to step 12.

   NO 

   Go to step 5.

5. Shorted wire check (ESL SW C line) 1

   -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. 9:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Go to step 6.

   NO 

   Go to step 7.

6. Shorted wire check (ESL SW C line) 2

   -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. 9:
   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 ESL SW C wire is OK. Replace the body control module .

7. Shorted wire check (ESL SW D line) 1

   -1. 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. 10:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Go to step 8.

   NO 

   The ESL SW D wire is OK. Replace the electric steering lock .

8. Shorted wire check (ESL SW D line) 2

   -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. 10:
   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 ESL SW D wire is OK. Replace the body control module .

9. 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. Replace the electric steering lock .

   NO 

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

10. Open wire check (ESL SW C line) 1

    -1. Turn the vehicle to the OFF (LOCK) mode.

    -2. Disconnect the following connector.

    Electric steering lock 12P connector

    -3. Turn the vehicle to the ON mode.

    -4. Measure the voltage between test points 1 and 2.

    Test condition	Vehicle ON mode Electric steering lock 12P connector: disconnected
    Test point 1	Electric steering lock 12P connector (female terminals) No. 9:
    Test point 2	Body ground

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

    Is there battery voltage?

    YES 

    The ESL SW C wire is OK. Replace the electric steering lock .

    NO 

    Go to step 11.

11. Open wire check (ESL SW C line) 2

    -1. Turn the vehicle to the OFF (LOCK) mode.

    -2. Disconnect the following connector.

    Body control module connector G (32P)

    -3. 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. 9:
    Test point 2	Body control module connector G (32P) No. 4

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

    Is there continuity?

    YES 

    The ESL SW C wire is OK. Replace the body control module .

    NO 

    Repair an open or high resistance in the wire.

12. Open wire check (ESL SW D line) 1

    -1. Turn the vehicle to the OFF (LOCK) mode.

    -2. Disconnect the following connector.

    Electric steering lock 12P connector

    -3. Turn the vehicle to the ON mode.

    -4. Measure the voltage between test points 1 and 2.

    Test condition	Vehicle ON mode Electric steering lock 12P connector: disconnected
    Test point 1	Electric steering lock 12P connector (female terminals) No. 10:
    Test point 2	Body ground

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

    Is there battery voltage?

    YES 

    The ESL SW D wire is OK. Replace the electric steering lock .

    NO 

    Go to step 13.

13. Open wire check (ESL SW D line) 2

    -1. Turn the vehicle to the OFF (LOCK) mode.

    -2. Disconnect the following connector.

    Body control module connector G (32P)

    -3. 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. 10:
    Test point 2	Body control module connector G (32P) No. 5

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

    Is there continuity?

    YES 

    The ESL SW D wire is OK. Replace the body control module .

    NO 

    Repair an open or high resistance in the wire.