ABS <4WD> ± Wheel Speed Sensor
35B-30
INSPECTION
CHECK OF RESISTANCE BETWEEN WHEEL SPEED
SENSOR TERMINALS
Caution
The pole piece can become magnetized because of the
magnet built into the wheel speed sensor, with the result
that metallic foreign material easily adheres to it. Moreover,
the pole piece may not be able to function to correctly
sense the wheel rotation speed if it is damaged.
1. Measure the resistance between the wheel speed sensor
terminals.
Standard value: 1.30 ± 1.58 kΩ
If the internal resistance of the wheel speed sensor is
not within the standard value, replace with a new wheel
speed sensor.
2. Check the wheel speed sensor cable for breakage, damage
or disconnection; replace with a new one if a problem
is found.
NOTE
When checking for cable damage, remove the cable clamp
part from the body and then bend and pull the cable near
the clamp to check whether or not temporary disconnection
occurs.
WHEEL SPEED SENSOR INSULATION INSPECTION
1. Remove all connections from the wheel speed sensor,
and then measure the resistance between terminals 1
and 2 and the body of the wheel speed sensor.
Standard value: 100 kΩ or more
2. If the speed sensor insulation resistance is outside the
standard value range, replace with a new speed sensor.
ABS ROTOR CHECK
Check whether ABS rotor teeth are broken or deformed, and,
if so, replace the B.J. assembly or the ABS rotor.
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