VSA System
DTC TroubleshootingDTC 11, 13, 15, 17: Wheel Speed Sensor (Open/Short to Body Ground/Short to Power)
1. Turn the ignition switch to ON (II).
2. Check for DTCs with the HDS.
Is DTC 87 indicated with DTC 11, 13, 15, and/or 17 at the same time?
YES - Go to step 9.
NO - Go to step 3.
3. Clear the DTC with the HDS.
4. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
5. Check for DTCs with the HDS.
Is DTC 11, 13, 15, and/or 17 indicated?
YES - Go to step 6.
NO - Intermittent failure, the system is OK at this time. Check for loose terminals between the wheel speed sensor 2P connector and the VSA modulator-control unit 46P connector. Check for a loose connection at G202. Refer to intermittent failures troubleshooting.
6. Turn the ignition switch to LOCK (0).
7. Check for loose terminals between the wheel speed sensor 2P connector and the VSA modulator-control unit 46P connector.
Are their connections OK?
YES - Go to step 8.
NO - Reconnect the connector and retest.
8. Check that the appropriate wheel speed sensor is properly mounted.
Is the wheel speed sensor installation OK?
YES - Go to step 10.
NO - Reinstall the wheel speed sensor, and check the mounting position.
9. Turn the ignition switch to LOCK (0).
10. Disconnect the VSA modulator-control unit 46P connector.
11. Start the engine.
12. Measure the voltage between body ground and the appropriate wheel speed sensor +B and GND terminals of the VSA modulator-control unit 46P connector respectively (see table).
Is there 0.1 V or more?
YES - Repair short to power in the wire between the VSA modulator-control unit and the appropriate wheel speed sensor.
NO - Go to step 13.
13. Turn the ignition switch to LOCK (0).
14. Check for continuity between body ground and the appropriate wheel speed sensor +B and GND terminals of the VSA modulator-control unit 46P connector respectively (see table).
Is there continuity?
YES - Go to step 15.
NO - Go to step 17.
15. Disconnect the appropriate wheel speed sensor 2P connector.
16. Check for continuity between body ground and the appropriate wheel speed sensor +B and GND terminals of the VSA modulator-control unit 46P connector respectively (see table).
Is there continuity?
YES - Repair short to body ground in the wire between the VSA modulator-control unit and the appropriate wheel speed sensor.
NO - Replace the appropriate wheel speed sensor.
17. Measure the resistance between the appropriate VSA modulator-control unit 46P connector wheel speed sensor +B and GND terminals (see table), then measure the resistance between the same terminals and reverse the positive and negative tester probes.
Is the resistance infinity in both directions?
YES - Go to step 18.
NO - Go to step 20.
18. Disconnect the appropriate wheel speed sensor 2P connector.
19. On the sensor side, measure the resistance between appropriate wheel speed sensor 2P connector terminals No. 1 and No. 2, then measure resistance between the same terminals and reverse the positive and negative tester probes.
Is the resistance infinity in both directions?
YES - Replace the appropriate wheel speed sensor.
NO - Repair open in the wire between the appropriate wheel speed sensor and the VSA modulator-control unit.
20. Check for continuity between the appropriate VSA modulator-control unit 46P connector wheel speed sensor +B and GND terminals (see table), then check for continuity between the same terminals and reverse the positive and negative tester probes.
Is there continuity in both directions?
YES - Go to step 21.
NO - Check for loose terminals in the VSA modulator-control unit 46P connector. Check for a loose connection at G202. If necessary, substitute a known-good VSA modulator-control unit and retest.
21. Disconnect the appropriate wheel speed sensor 2P connector.
22. Check for continuity between the appropriate VSA modulator-control unit 46P connector wheel speed sensor +B and GND terminals (see table), then check for continuity between the same terminals and reverse the positive and negative tester probes.
Is there continuity in both directions?
YES - Repair short in the wires between the VSA modulator-control unit and the appropriate wheel speed sensor.
NO - Replace the appropriate wheel speed sensor.