DTC 68-22
DTC 68-22: Brake Pedal Position Switch Stuck ON1. Turn the ignition switch ON (II).
2. Check the BRK PRESS in the DATA LIST with the HDS.
Is 0.5 V or less?
YES - Go to step 3.
NO - Replace the VSA modulator-control unit.
3. Check the BRAKE SWITCH in the DATA LIST while the HDS with moving the brake pedal.
Does it indicate ON when the pedal is pushed, and OFF when pedal is released?
YES - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals between the brake pedal position switch, the ECM/PCM, and the VSA modulator-control unit. Refer to intermittent failure.
NO - Go to step 4.
4. Check the BRAKE SWITCH in the DATA LIST with the HDS, and disconnect the brake pedal position switch 4P connector.
Does indicator change to OFF?
YES - Substitute a known-good ECM/PCM, then go to step 1 and recheck. If DTCs are not indicated, replace the original ECM/PCM.
NO - Go to step 5.
5. Check for continuity between brake pedal position switch 4P connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair short in the wire between the ECM/PCM and the brake pedal position switch.
NO - Replace the brake pedal position switch.