For Display Group Number 002 Remember - Volkswagen Golf 4 1998 Service Manual

ABS ITT Mk 20 IE On Board Diagnostic (OBD) program
Note:

For display group number 002 remember:

The reading of measured value blocks in display group number 002 must be undertaken
when driving off slowly. Then the ABS Control Module (w/EDL) -J104- will store the first
usable voltage signals provided by the speed sensors and display these as a fixed value in
the measured value block.
Read measured value block
1) 1)
3 km/h 6 km/h
Wheel speed at left front speed sensor
(0 to 255 km/h)
1)
If the deviations in display zones 1 and 2 are greater than 6 km/h (approx. 3.75 mph), the
following malfunctions may be present:
2)
If the deviations in display zones 3 and 4 are greater than 2 km/h (approx. 1.25 mph), the
following malfunctions may be present:
Note:
Air gap between speed sensor and rotor may be too wide.
- Check that speed sensor is attached correctly to wheel bearing housing.
Speed sensor or rotor exterior damaged.
- Change damaged component.
2
2) 2)
2 km/h 1 km/h
Wheel speed at left rear speed sensor
(0 to 255 km/h)
Wheel speed at right front speed sensor
(0 to 255 km/h)
Display group number: 002
Indicated on display: (when driving off slowly)
Wheel speed at right rear speed sensor
(0 to 255 km/h)
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