68-1

VSA DTC Troubleshooting: 68-1

DTC 68:

Brake Pedal Position Switch Malfunction

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Reading and Clearing Diagnostic Trouble Codes.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Check for DTCs with the HDS.

Is DTC 86 indicated with DTC 68 at the same time?

YES -

Do the DTC 86 troubleshooting 86-1.

NO -

Go to step 3.

3. Check the BRAKE SWITCH in the VSA DATA LIST with the HDS while moving the brake pedal.

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

YES -

Go to step 4.

NO -

Go to step 7.

4. Clear the DTC with the HDS.

5. Test-drive the vehicle at 9 mph (15 km/h) for 60 seconds or more.

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

6. Check for DTCs with the HDS.

Is DTC 68 indicated?

YES -

Go to step 10.

NO -

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

7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

8. Disconnect the brake pedal position switch 4P connector Adjustments.

9. Do the brake pedal position switch test Testing and Inspection.

Is the brake pedal position switch OK?

YES -

Check for fuel and emissions systems DTCs Initial Inspection and Diagnostic Overview, and troubleshoot those DTCs first, if no fuel and emissions systems DTCs are found troubleshoot the brake pedal position switch signal circuit Brake Pedal Position Switch Signal Circuit Troubleshooting.

NO -

Replace the brake pedal position switch Adjustments.

10. Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection.

11. Test-drive the vehicle at 9 mph (15 km/h) for 60 seconds or more.

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

12. Check for DTCs with the HDS.

Is DTC 68 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.

NO -

If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.