DTC 66: VSA Pressure Sensor (Inside of VSA Modulator-control Unit)
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
- Check for DTCs with the HDS.
Is DTC 64 indicated?
YES - Do the troubleshooting for DTC 64 (seeDTC 64: Sensor Power Voltage ).
NO - Go to step 5.
- Check the BRAKE PRESS in the VSA DATA LIST with the HDS without pressing the brake pedal.
Is there 0.8 MPa or more?
YES - Go to step 6.
NO - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit (seeVSA Modulator-Control Unit Removal and Installation ), and retest
- Press the brake pedal until BRAKE SWITCH in the VSA DATA LIST is turned ON with the HDS.
- Check the BRAKE PRESS in the VSA DATA LIST with the HDS.
Is there 0 MPa?
YES - Go to step 8.
NO - Check the brake pedal position switch function and adjustment. If necessary, adjust or replace the brake pedal position switch: Without power adjustable pedals, with power adjustable pedals .
- Do the VSA sensor neutral position memorization (seeVSA Sensor Neutral Position Memorization ).
- Start the engine and press the brake pedal until BRAKE PRESS in the VSA DATA LIST is 15 MPa with the HDS.
- Check for DTCs with the HDS.
Is DTC 66 indicated?
YES - Go to step 6.
NO - The system is OK at this time.