5. Disconnect the wiring connector from the control unit and measure the output voltage between the connector terminals on the wiring harness side (Figure 14.36).
Figure 14.36. Checking the resistance and electrical continuity between the terminals of the wiring connector on the wiring harness side
6. Rotate the wheel at a speed of 0.5 to 1 rpm and measure the output voltage of the wheel speed sensor.
Output voltage: when measured by voltmeter: 50mV or more, when measured by oscilloscope: 120mV (end to end) or more.
7. If the output voltage is lower than the required value, the cause may be a faulty wheel speed sensor. In this case, the defective sensor must be replaced.
| Wheel speed sensor in | Front left wheel | Front right wheel | Rear left wheel | Rear right wheel |
| Terminal No | 6 | 8 | 9 | 7 |
| 19 | 21 | 22 | 20 |