APRILIA RSV4 1100 Factory Service Station Manual page 471

RSV4 1100 Factory
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between PIN 14 of the ABS control unit and PIN 1 of the sensor (yellow cable)
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between PIN 13 of the ABS control unit and PIN 2 of the sensor (yellow/brown cable)
Short-circuit to negative:
- Disconnect the sensor connector.
- Check the ground insulation of the two PINs.
- 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.
C1032 Rear wheel speed sensor
Functional diagnosis:
Signal not plausible.
Error cause:
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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.
C1033 Front wheel speed sensor
Electrical diagnosis:
Open circuit, short circuit to negative or short circuit to positive.
Error cause:
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Open circuit: circuit interruption detected.
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Short-circuit to negative: null voltage detected on PIN 3 of the ABS control unit.
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Short-circuit to positive: excessive voltage detected on PIN 3 of the ABS control unit.
Troubleshooting:
Open circuit:
- Check the connectors on the component and on the ABS control unit.
- Check the integrity and continuity of the wiring harnesses:
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between PIN 3 of the ABS control unit and PIN 1 of the sensor (white cable)
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between PIN 12 of the ABS control unit and PIN 2 of the sensor (white/brown cable)
Short-circuit to negative:
- Disconnect the sensor connector.
- Check the ground insulation of the two PINs.
Braking system
BRAK SYS - 471