200 Quattro Wagon L5-2226cc 2.22L SOHC Turbo (MC) (1989)
Brake Fluid Pump: Customer Interest
ABS Pump - Noise and Slight Brake Pedal Vibration
Weak Signal From Wheel Speed Sensor Causes ABS Return Pump To Come On At Speeds Below 20 MPH/30KH
Model(s): All With ABS
(This Technical Bulletin Supersedes Technical Bulletin, Group 45, Number 91-03 Dated 10/31/91)
Driver notices ABS pump noise and slight brake pedal vibration.
Weak signal from one wheel speed sensor.
Improvement of assembly at supplier. From 05.89, Chassis No. 8A_LA001000
Check wheel speed sensor.
- Check correct fitting of wheel speed sensor (final stop).
- Measure the inner resistance of the sensor according to test step 10 ABS Fault Finding. Move the sensor cable during this test
to determine if poor connection is present.