Specifications
and the instrument panel connector PIN 10: if not OK, restore the cable harness; if OK, check the correct
sensor resistance: if it is not OK, replace the sensor; if it is OK, check continuity of the brown cable
between the sensor connector (cable harness side) and PIN 18 of the instrument panel connector: If
not OK, restore the cable harness; if OK, with key set to ON, check if there is voltage at the sensor
connector PIN 1: if there is no voltage, replace the instrument panel; if there is approximately 12V,
restore the cable harness (there is a short circuit in the battery). If there is 5V voltage, connect a 10
kOhm resistance to PIN 1 of the sensor connector and to the vehicle ground connection: if, with key set
to ON, the voltage measured upstream the resistance decreases, replace the instrument panel. If volt-
age continues to be approximately 5V, restore the pink cable (there is a short circuit at + 5V)
Notes
If a short circuit to ground is detected at PIN 10 of the instrument panel connector, the display will show
a full scale temperature indication of 60°C
Check the earth insulation of the sensor connector pink cable: if there is a connection, restore the cable
harness; if it is earth insulated, check that sensor resistance is correct: if it is not OK, replace the sensor;
if it is OK, replace the instrument panel.
RUN/STOP switch
Function
It tells the control unit if the driver wishes to enable
engine start-up or to keep the engine running.
Operation / Operating principle
If the driver wants to shut off the engine or to dis-
able engine start-up, the switch should be open,
i.e. the Marelli control unit should not detect volt-
age at PIN 27 of the BLUE connector
Level in wiring diagram:Start-up enabling
switches.
Location:
•
Switch: right light switch
•
Connector: next to the headstock, right
side
Electrical characteristics:
•
STOP position: the circuit is open
•
RUN position: closed circuit (continui-
ty)
Pin-out:
Electrical system GRISO 8V - 1200
ELE SYS - 76
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