Manufacturer Code Charts: 87

VSA DTC Troubleshooting: 87

DTC 87:

Current Flow into Wheel Speed Sensor Input Amplifier

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

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0) and then back to ON (II).

4. Check for DTCs with the HDS.

Is DTC 11, 13, 15, or 17 indicated?

YES -

Do the troubleshooting for DTC 11, 13, 15, or 17 VSA System.�

NO -

Go to step 5.

5. Turn the ignition switch to LOCK (0).

6. Disconnect the VSA modulator-control unit 46P connector.

7. Start the engine.

8. Measure the voltage between body ground and all the wheel speed sensor +B and GND terminals of the VSA modulator-control unit 46P connector individually (see table).









Is there any voltage?

YES -

Repair a short to power in the wires between the VSA modulator-control unit and the wheel speed sensor. After repair, go to step 9.

NO -

Check for loose or poor connections in the VSA modulator-control unit 46P connector and wheel speed sensor2P connector. If connections are good, replace the VSA modulator-control unit Service and Repair.�

9. Turn the ignition switch to LOCK (0).

10. Reconnect all connectors.

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

12. Clear the DTCs with the HDS.

13. Turn the ignition switch to LOCK (0) and then back to ON (II).

14. Check for DTCs with the HDS.

Is DTC 22 indicated?

YES -

Check for loose or poor connections in the VSA modulator-control unit 46P connector. If connections are good, replace the VSA modulator-control unit Service and Repair.�

NO -

The system is OK at this time.�