Speed Sensor, Checking
Display group number 002
-- Press keys 0 , 0 and 2 .
-- Confirm entry with key Q .
-- There are always 4 display zones -arrows- in the measured value block. Decoding the individual values in display zones 1 to 4 can be read-off from the following tables.
| Read measured value block 2 -> -> 1 -> 2 -> 3 -> 4 |
Indicated on display: (vehicle stationary)
| Read measured value block 2 -> 255 km/h 255 km/h 255 km/h 255 km/h |
Press C key for the next display group number entry.
If the → key is pressed, keys 0 and 8 for work sequence "Read measured value block" must be pressed again afterwards to regain entry.
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 -J104- (w/EDL) 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 | 2 → | Display group number: 002 | ||||||
| 3 km/h(1) | 6 km/h(1) | 2 km/h(2) | 1 km/h(2) | Indicated on display: (when driving off slowly) | ||||
Wheel speed at right rear speed sensor
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Wheel speed at left rear speed sensor
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Wheel speed at right front speed sensor
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Wheel speed at left front speed sensor
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- Air gap between speed sensor and rotor may be too big.
- Check that speed sensor is screwed correctly to wheel bearing housing.
- Speed sensor or rotor exterior damaged.
- Change damaged component.