Gilera 633721 Workshop Manual page 251

Nexus 500 euro 3
RESISTANCE OF THE RPM TIMING SENSOR: (
1
2
YES go to 11 NO go to 12
11 - Check the earth isolation between a pole and the shielding.
(see the «Electrical system» chapter).
Electric characteristic
S - + =
infinite (>MΩ)
YES go to 13 NO go to 12
12 - Replace the revolution sensor.
13 - Reconnect the rpm-timing sensor connector.
Repeat the resistance check through the injection
wiring pin 7, pin 12.
Electric characteristic
7-12 =
680 Ω ± 100 Ω (Model with 2 clamps)
7-12 =
890 Ω ± 130 Ω (Model with 1 clamp)
The value should be very close to that detected directly by the sensor.
YES go to 17 NO go to 14
14 - Higher or infinite resistance.
YES go to 15 NO go to 16
Specification
Model with 1 clamp:
Model with 2 clamps:
Injection
25°C)
AT
Desc./Quantity
860 Ω ± 130 Ω
680 Ω ± 100 Ω
INJEC - 251