Manufacturer Code Charts: 66

VSA DTC Troubleshooting: 66

DTC 66:

VSA Pressure Sensor (Inside of VSA Modulator-control Unit)

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

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

4. Check for DTCs with the HDS.

Is DTC 64 indicated?

YES -

Do the troubleshooting for DTC 64 64.

NO -

Go to step 5.

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 Service and Repair, and retest.�

6. Press the brake pedal until BRAKE SWITCH in the VSA DATA LIST is turned ON with the HDS.

7. 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 Adjustments, with power adjustable pedals Adjustments.�

8. Do the VSA sensor neutral position memorization Programming and Relearning.

9. Start the engine and press the brake pedal until BRAKE PRESS in the VSA DATA LIST is 15 MPa with the HDS.

10. Check for DTCs with the HDS.

Is DTC 66 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit Service and Repair, and retest.�

NO -

The system is OK at this time.�