MOTO GUZZI stelvio 1200 NTX MY11 Service Manual page 121

Stelvio 1200 NTX MY11
Function
it tells the vehicle position to the control unit.
Operation / Operating principle
When the sensor is inverted, the circuit is closed
to ground: when the Marelli control unit detects this
earthing, it disables the fuel pump circuit and the
engine start-up circuit via the injection relay.
Level in electrical circuit diagram:Start-up ena-
bling switches.
Location:
•
Sensor: under the saddle, right side
•
Connector: near the sensor
Electrical characteristics:
•
Sensor in vertical position: open circuit
(resistance: 62 kOhm)
•
Sensor inverted: closed circuit (resist-
ance below 0.5 kOhm)
Pin-out:
1. Voltage 12V
2. Ground connection
NAVIGATOR: STATUSES
Fall sensor
Example value: Normal / Tip over
DIAGNOSIS
•
Indication on Navigator always Normal, even when the sensor is inverted: disconnect the
connector and, with sensor inverted, check if there is continuity between the two PINS of
the sensor: if there is no continuity, replace the sensor; if there is, check the connector. If
not OK, restore the cable harness; if OK, check continuity to ground of PIN 2: if there is no
continuity, restore the cable harness; if there is, with key set to KEY ON, check if there is
12V voltage at PIN 1. If there is not, check the Marelli control unit connector (PIN 35 of the
BLUE connector)
•
Indication on Navigator always Tip over: disconnect the connector and check if there is
continuity between the two PINS when the sensor is in vertical position: if there is continuity,
replace the sensor; if there is not, it means that, with key set to KEY ON, there is no 12V
voltage at PIN 1: restore the cable harness whose pink/yellow cable will be shorted to ground
Revente Interdite - Revendita Vietata - Resaling Forbiden - Wiederverkauf Verboten
Electrical system
ELE SYS - 121