APRILIA RS 125 Euro 4 Service Manual page 127

RS 125 - Tuono 125 - Euro 4
- If there is no insulation, restore the wiring harness or replace the sensor.
Short-circuit to positive:
- Disconnect the sensor connector.
- Check the battery supply insulation of the two PINS.
- If there is no insulation, restore the wiring harness or replace the sensor.
C1034 Front wheel speed sensor functional diagnosis - inconsistent signal.
Error cause
Possible tone wheel fault due to deformations or dirt.
Troubleshooting
- Check that the tone wheel is not damaged and is clean.
- Check that the number of teeth on the tone wheel is correct.
- Check that the tone wheel and the sensor are correctly positioned;
- Check that the tyre is the correct size.
- If all these checks are positive, replace the sensor.
REAR VEHICLE SPEED SENSOR
Function:
Generates a signal used by the ABS control unit
to determine the speed value of the wheel.
Operation / Operating principle:
Magneto-resistive sensor: generates a square
wave signal with an amplitude of approximately 1V
between PIN13 and PIN14.
Electrical circuit diagram - Level in electrical
circuit diagram:
ABS system
Position on vehicle:
RH side of swingarm, on brake calliper mounting
bracket.
CAUTION
THE DISTANCE BETWEEN THE ABS SENSOR AND THE
PHONIC WHEEL MUST BE BETWEEN 0.3 mm (0.012 in)
AND 2 mm (0.079 in).
Electrical system
ELE SYS - 127