Diagnostic Aids
Low wheel speed sensor output can be caused by lack of continuity in the wheel speed sensor circuits, excessive sensor gap or a defective wheel speed sensor.
NOTE:
The Following Test May Be Performed For Individual Wheel Speed Sensors (As Directed By Appropriate Diagnostic Procedure) Or For All Sensors As A System Check
To Set Up For Test:
- Install J-35592 Pinout Box
- Raise Car So That Wheel Clear The Ground
- An Assistant May Be Required To Spin The Wheels
If No Trouble Is Found With Wheel Speed Sensor Output, Consider That:
- Output Should Not Be Significantly Different From LF To RF And LR To RR
- Front WSS Output Should Be Slightly Higher Than Rear WSS Output
- Improper Output May Be Caused By Misadjusted Front Sensor
- Wheel Speed Sensor Cables Sometimes Can Intermittently Go Open, Particularly In The Wheelhouse Area Manipulate The Cables By Hand When Inspecting For An Open Circuit
- Toothed Sensor Rings Should Also Be Inspected For Damaged Or Missing TeethNOTE: If no trouble is found with wheel speed sensor output, consider that:
- Output should not be significantly different from left front to right front and left rear to right rear.
- Front wheel speed sensor output should be slightly higher than rear wheel speed sensor output.
- Wheel speed sensor cables sometimes can intermittenetly go open, particularly in the wheelhouse area. Manipulate the cables by hand when inspecting for an open circuit.
- Toothed sensor rings should also be inspected for damage or missing teeth.