VSA DTC 68-13 (2014 2015)

DTC 68-13  : Brake Pedal Position Switch Circuit Malfunction

NOTE: 

• Troubleshoot any PGM-FI DTCs first - Refer to:

  How to Troubleshoot the Fuel and Emissions Systems (2014-20)

• Before you troubleshoot, review the how to troubleshoot the VSA system - Refer to:

  How to Troubleshoot the VSA System (2014 2015 2016)

DTCs (VSA)

1. Problem verification

   - 1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

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

   - 4. Turn the vehicle to the ON mode, then press the brake pedal hard for 1 second or more.

   - 5. Check for DTCs with the HDS.

   DTC Description	DTC	Freeze Frame
   68-13 Brake Pedal Position Switch Circuit Malfunction

   Is DTC 68-13 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting - Refer to:

   How to Troubleshoot the VSA System (2014 2015 2016) or

   If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.

2. VSA modulator-control unit performance check

   - 1. Start the engine.

   - 2. Check the parameter(s) below with the HDS. Do not press the brake pedal.

   Signal	Current conditions
   	Values	Unit
   BRAKE PRESSURE

   Is there 8 MPa or less?

   YES 

   Go to step 3.

   NO 

   Check for brake drag or a misadjusted brake pedal position switch . If they are normal, go to step 13.

3. Brake pedal position switch performance check 1

   - 1. Check the parameter(s) below with the HDS while pressing the brake pedal.

   Signal	Current conditions
   	Values	Unit
   BRAKE SWITCH

   Does it indicate ON when the pedal is pressed, and OFF when the pedal is released?

   YES 

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting - Refer to:

   How to Troubleshoot the VSA System (2014 2015 2016) or

   If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.

   NO 

   Go to step 4.

4. Brake pedal position switch performance check 2

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

   - 2. Disconnect the following connector.

   Brake pedal position switch 4P connector

   - 3. Connect terminals 1 and 2 with a jumper wire.

   Terminal 1	Brake pedal position switch 4P connector No. 1 (PUR)
   Terminal 2	Brake pedal position switch 4P connector No. 2 (RED)

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

   - 4. Turn the vehicle to the ON mode.

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

   Signal	Current conditions
   	Values	Unit
   BRAKE SWITCH

   Does it indicate ON?

   YES 

   Check the brake pedal position switch adjustment . If it is OK, replace the brake pedal position switch .

   NO 

   Go to step 5.

5. Fuse check

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

   - 2. Disconnect the jumper wire.

   - 3. Check the following fuse.

   Fuse	No. B8 (20 A)
   Location	Main under-hood fuse box

   Is the fuse OK?

   YES 

   The fuse is OK. Reinstall the fuse, then go to step 10.

   NO 

   Go to step 6.

6. Shorted wire check (+B STOP HORN line)

   - 1. Disconnect the following connector.

   Brake light relay 5P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Brake pedal position switch 4P connector: disconnected
   	Brake light relay 5P connector: disconnected
   Test circuit	+B STOP HORN
   Test point 1	Brake pedal position switch 4P connector No. 2 (RED)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short to body ground in the wire between the No. B8 (20A) fuse in the main under-hood fuse box and the brake pedal position switch or the brake light relay.

   NO 

   The +B STOP HORN wire is not shorted to body ground. Go to step 7.

7. Shorted wire check (STOP SW line)

   - 1. Short the SCS line with the HDS.

   - 2. Disconnect the following connector.

   PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2014-20)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Brake pedal position switch 4P connector: disconnected
   	Brake light relay 5P connector: disconnected
   	PCM connector A (51P): disconnected
   Test circuit	STOP SW

   Test point 1	Brake pedal position switch 4P connector No. 1 (PUR)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short to body ground in the wire between the brake pedal position switch and the PCM or the brake light relay.

   NO 

   The STOP SW wire is not shorted to body ground. Go to step 8.

8. Shorted wire check (BRAKE DIAG line)

   - 1. Disconnect the following connector.

   VSA modulator-control unit 38P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Brake light relay 5P connector: disconnected
   	VSA modulator-control unit 38P connector: disconnected
   Test circuit	BRAKE DIAG
   Test point 1	VSA modulator-control unit 38P connector No. 18 (ORN)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short to body ground in the wire between the VSA modulator-control unit and the brake light relay.

   NO 

   The BRAKE DIAG wire is not shorted to body ground. Install a new No. B8 (20 A) fuse in the main under-hood fuse box, then go to step 9.

9. VSA modulator-control unit check

   - 1. Reconnect the following connectors.

   Brake pedal position switch 4P connector

   Brake light relay 5P connector

   PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2014-20) or How to Troubleshoot the Fuel and Emissions Systems (With Auto Idle Stop System) (2016-20)

   VSA modulator-control unit 38P connector

   - 2. Turn the vehicle to the ON mode.

   - 3. Clear the DTC with the HDS.

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

   - 5. Turn the vehicle to the ON mode, then press the brake pedal hard for 1 second or more.

   - 6. Check for DTCs with the HDS.

   DTC Description	DTC	Freeze Frame
   68-13 Brake Pedal Position Switch Circuit Malfunction

   Is DTC 68-13 indicated?

   YES 

   Go to step 13.

   NO 

   Troubleshooting is complete.

10. Open wire check (+B STOP HORN line)

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

    Test condition	Vehicle OFF (LOCK) mode
    	Brake pedal position switch 4P connector: disconnected
    Test circuit	+B STOP HORN
    Test point 1	Brake pedal position switch 4P connector No. 2 (RED)
    Test point 2	Body ground

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

    Is there battery voltage?

    YES 

    The +B STOP HORN wire is OK. Go to step 11.

    NO 

    Repair an open in the wire between the No. B8 (20 A) fuse in the main under-hood fuse box and the brake pedal position switch.

11. Open wire check (STOP SW line)

    - 1. Short the SCS line with the HDS.

    - 2. Disconnect the following connector.

    PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2014-20) or How to Troubleshoot the Fuel and Emissions Systems (With Auto Idle Stop System) (2016-20)

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

    Test condition	Vehicle OFF (LOCK) mode
    	Brake pedal position switch 4P connector: disconnected
    	PCM connector A (51P): disconnected
    Test circuit	STOP SW
    Test point 1	Brake pedal position switch 4P connector No. 1 (PUR)
    Test point 2	PCM connector A (51P) No. 25 (PUR)

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

    Is there continuity?

    YES 

    The STOP SW wire is OK. Go to step 12.

    NO 

    Repair an open in the wire between the PCM and the brake pedal position switch.

12. PCM check (update or substitution)

    - 1. Reconnect the following connectors.

    Brake pedal position switch 4P connector

    PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2014-20) or How to Troubleshoot the Fuel and Emissions Systems (With Auto Idle Stop System) (2016-20)

    - 2. Update the PCM if it does not have the latest software,

    or substitute a known-good PCM.  Refer to:

    PCM Removal and Installation (2014 2015)

    - 3. Clear the DTC with the HDS.

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

    - 5. Turn the vehicle to the ON mode, then press the brake pedal hard for 1 second or more.

    - 6. Check for DTCs with the HDS.

    DTC Description	DTC	Freeze Frame
    68-13 Brake Pedal Position Switch Circuit Malfunction

    Is DTC 68-13 indicated?

    YES 

    Go to step 13.

    NO 

    If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM - Refer to:

    PCM Removal and Installation (2014 2015)

13. VSA modulator-control unit check (update)

    - 1. Update the VSA modulator-control unit if it does not have the latest software.

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

    - 3. Turn the vehicle to the ON mode, then press the brake pedal hard for 1 second or more.

    - 4. Check for DTCs with the HDS.

    DTC Description	DTC	Freeze Frame

    Is DTC 68-13 indicated?

    YES 

    Check for loose terminals in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit .

    NO 

    Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.