Manufacturer Code Charts: 68

VSA DTC Troubleshooting: 68

DTC 68: Brake Pedal Position Switch Stuck ON (Hardware)

1. Turn the ignition switch to ON (II).

2. Check for DTCs with the HDS.

Is DTC 86 indicated with DTC 67 at the same time?
YES - Troubleshoot DTC 86 and recheck.

NO - Go to step 3.


3. Clear the DTCs with the HDS.

4. Check for DTCs with the HDS.

Does the VSA system indicator come on and is DTC 68 indicated?
YES - Go to step 5.

NO - The system is OK at this time.


5. Check BRAKE SWITCH in the VSA DATA LIST with the HDS.

Is the brake pedal position switch ON with the brake pedal released?
YES - Go to step 6.

NO - Replace the VSA modulator-control unit. Service and Repair


6. Check the brake pedal position switch function and adjustment.

Is the switch OK and its adjustment OK?
YES - Go to step 7.

NO - Replace or adjust the brake pedal position switch.


7. Turn the ignition switch to LOCK (0), and jump the SCS line with the HDS.

NOTE: This must be done to protect the powertrain control module (PCM) from damage.

8. Disconnect PCM connector A (49P).

9. Turn the ignition switch to ON (II).

10. Measure the voltage between PCM connector terminal A8 and body ground.

Is there 0.2 V or more with the brake pedal released?
YES - Repair short to power in the wire between the brake pedal position switch and the PCM (A8).

NO - Go to step 11.






11. Check the BRK PRESS in the VSA DATA LIST with the HDS.

Is the brake pressure at 0.0 with the brake pedal released?
YES - The system is OK at this time.

NO - Go to step 12.


12. Remove the brake pedal position switch.

Does the brake pressure drop to 0.0?
YES - Install and adjust the brake pedal position switch. Adjustments

NO - Refer to the brake system inspection and test. Component Tests and General Diagnostics