DTC 68
DTC 68: Brake Pedal Position Switch1. Check for DTCs with the HDS.
Is DTC 91 or 92 indicated with DTC 68 at the same time?
YES - Troubleshoot DTC 91 or 92, and recheck.
NO - Go to step 2.
2. Check the BRAKE SWITCH in the VSA DATA LIST with the HDS.
Is the BRAKE SWITCH OFF with the brake pedal released?
YES - Go to step 3.
NO - Go to step 9.
3. Check the No. 13 (20 A) fuse in the under-hood fuse/relay box.
Is the fuse OK?
YES - Reinstall the fuse, and go to step 4.
NO - Replace the fuse and recheck.
4. Check the brake pedal position switch for function and adjustment.
Is the switch OK and its adjustment OK?
YES - Go to step 5.
NO - Replace or adjust the brake pedal position switch.
5. Measure the voltage between brake pedal position switch 4P connector terminal No. 1 and body ground.
Is there battery voltage?
YES - Go to step 6.
NO - Repair open in the wire between the No. 13 (20 A) fuse in the under-hood fuse/relay box and the brake pedal position switch.
6. Turn the ignition switch OFF, and jump the SCS line with the HDS.
NOTE: This must be done to protect the powertrain control module (PCM) from damage.
7. Disconnect PCM connector A (44P).
8. Measure the voltage between PCM connector terminal A8 and body ground.
Is there battery voltage when the brake pedal is pressed?
YES - Substitute a known-good PCM, and recheck.
NO - Repair open in the wire between the brake pedal position switch and the PCM (A8).
9. Clear the DTCs with the HDS.
10. Turn the ignition switch OFF, then turn it ON (II), and press the brake pedal several times.
11. Check for DTCs with the HDS.
Does the ABS indicator come on, and is DTC 68 indicated?
YES - Go to step 12.
NO - The system is OK at this time.
12. Check BRK PRESS in the VSA DATA LIST with the HDS.
Does BRK PRESS increase with the brake pedal pressed and decrease with the brake pedal released?
YES - Replace the VSA modulator-control unit.
NO - Check the brake lines for damage and leakage.