SAAB WIS ONLINE

INSPECTION

INSPECTION

ABS WHEEL SPEED SENSOR

Check the pole piece of ABS wheel speed sensor for foreign particles or damage. If necessary, clean the pole piece or replace ABS wheel speed sensor.

Measure the ABS wheel speed sensor resistance.

If resistance is out of standard value, replace the ABS wheel speed sensor with a new one.


Terminal No. Standard
1 and 2

1.15±0.115 kΩ



Note

Check the ABS wheel speed sensor cable for discontinuity. If necessary, replace with a new one.


SENSOR GAP

Measure the clearance between tone wheel and ABS wheel speed sensor at whole periphery.

Note

If clearance is narrow, adjust by using spacer (Part No. 32009555).

If clearance is wide, check the outputted voltage then replace the ABS wheel speed sensor or tone wheel if the outputted voltage is outside specification.


ABS wheel speed sensor clearance:

0.7 — 1.2 mm (0.028 — 0.047 in)


(1)

Tone wheel

(2)

ABS wheel speed sensor

(3)

Sensor gap



OUTPUT VOLTAGE

Output voltage can be checked by the following method. Install the resistor and condenser, then rotate the wheel about 2.75 km/h (2 MPH) or equivalent.

Output voltage specification:

0.12 — 1 V (at 20 Hz)

Note

Regarding terminal No., please refer to item 1. ABS WHEEL SPEED SENSOR.



(1)

Oscilloscope

(2)

Terminal