DTC 68-11

DTC 68-11  : Brake Pedal Position Switch Stuck OFF

NOTE: 

• Troubleshoot any PGM-FI DTCs first.
• Before you troubleshoot, review the how to troubleshoot the VSA system .

DTCs (VSA)

1. 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 10 MPa or less?

   YES 

   Go to step 2.

   NO 

   Check for brake drag or a misadjusted brake pedal position switch . If they are normal, go to step 11.

2. 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 .

   NO 

   Go to step 3.

3. 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
   Terminal 2	Brake pedal position switch 4P connector No. 2

   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 4.

4. Fuse check

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

   -2. Disconnect the jumper wire.

   -3. Check the following fuse.

   Fuse	No. B6 (10 A)
   Location	Under-hood fuse/relay box

   Is the fuse OK?

   YES 

   The fuse is OK. Reinstall the fuse, then go to step 8.

   NO 

   Go to step 5.

5. Shorted wire check (+B STOP line)

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

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

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

   Is there continuity?

   YES 

   Repair a short to body ground in the +B STOP wire between the No. B6 (10 A) fuse in the under-hood fuse/relay box and the brake pedal position switch.

   NO 

   The +B STOP wire is not shorted to body ground. Go to step 6.

6. Shorted wire check (BRK DIAG line)

   -1. Short the SCS line with the HDS.

   NOTE:  Always short the SCS line with the HDS before removing PCM connector(s).

   -2. Disconnect the following connector.

   PCM connector A (51P)

   -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 point 1	Brake pedal position switch 4P connector No. 1
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short to body ground in the BRK DIAG wire between the brake pedal position switch and the PCM.

   NO 

   The BRK DIAG wire is not shorted to body ground. Install a new No. B6 (10 A) fuse in the under-hood fuse/relay box, then go to step 7.

7. VSA modulator-control unit check

   -1. Reconnect the following connectors.

   Brake pedal position switch 4P connector

   PCM connector A (51P)

   -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. Test-drive the vehicle at 6 mph (10 km/h) or more.

   NOTE:  Drive the vehicle on the road, not on a lift.

   -6. Check for DTCs with the HDS.

   DTC Description	DTC	Freeze Frame
   68-11 Brake Pedal Position Switch Stuck OFF

   Is DTC 68-11 indicated?

   YES 

   Go to step 11.

   NO 

   The troubleshooting is complete.

8. Open wire check (+B STOP 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 point 1	Brake pedal position switch 4P connector No. 2
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The +B STOP wire is OK. Go to step 9.

   NO 

   Repair an open in the +B STOP wire between the No. B6 (10 A) fuse in the under-hood fuse/relay box and the brake pedal position switch.

9. Open wire check (BRK DIAG line)

   -1. Short the SCS line with the HDS.

   NOTE:  Always short the SCS line with the HDS before removing PCM connector(s).

   -2. Disconnect the following connector.

   PCM connector A (51P)

   -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 point 1	Brake pedal position switch 4P connector No. 1
   Test point 2	PCM connector A (51P) No. 13

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

   Is there continuity?

   YES 

   The BRK DIAG wire is OK. Go to step 10.

   NO 

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

10. PCM check (update or substitution)

    -1. Reconnect the following connectors.

    Brake pedal position switch 4P connector

    PCM connector A (51P)

    -2. Update the PCM if it does not have the latest software , or substitute a known-good PCM .

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

    -4. Clear the DTC with the HDS.

    -5. Turn the vehicle to the OFF (LOCK) mode.

    -6. Test-drive the vehicle at 6 mph (10 km/h) or more.

    NOTE:  Drive the vehicle on the road, not on a lift.

    -7. Check for DTCs with the HDS.

    DTC Description	DTC	Freeze Frame
    68-11 Brake Pedal Position Switch Stuck OFF

    Is DTC 68-11 indicated?

    YES 

    Go to step 11.

    NO 

    If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM .

11. 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. Test-drive the vehicle at 6 mph (10 km/h) or more.

    NOTE:  Drive the vehicle on the road, not on a lift.

    -4. Check for DTCs with the HDS.

    DTC Description	DTC	Freeze Frame

    Is DTC 68-11 indicated?

    YES 

    Check for loose terminals in the VSA modulator-control unit 21P 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.