Component Tests and General Diagnostics

ABS operation inspection
Wheel speed sensor output voltage inspection
1. Release parking brake after lifting vehicle.
2. Remove wheel speed sensor connector and measure current and voltage at the sensor side

CAUTION:
When measuring sensor output voltage, be sure to install resistance (R=115Ohms) at wheel speed sensor as shown in the picture to prevent sensor damaging.

3. Rotate the wheel to be measured approximately 1/2 to 1 rotation per second, and check the operating current and voltage between No.1 and No.2 using a circuit tester or an oscilloscope.




Operating Voltage






SIGNAL CURRENT LEVEL