there is 5V voltage at PIN 2 (Pink/White cable). If there is not, check the Marelli control unit
connector (PIN 65).
•
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 ON, there is no 5V voltage
at PIN 2: restore the cable harness whose pink/white cable will be shorted to ground
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
Electric fan circuit
Function
Radiator fan and coolant - Operation
Operation / Operating principle
When the control unit detects a temperature of ap-
prox. 102 °C, it closes the fan control relay pickup
circuit to ground
Level in electrical circuit diagram:
electric fan
Location:
•
sensor: relay located inside the rear re-
lay box, the one toward motorcycle
rear end (also CHECK relay identifica-
tion with the colour of the cables)
•
connector: on the relay
Electrical characteristics:
•
relay normally open;
•
drive coil resistance 110 Ohm (+/- 10
%)
DIAGNOSIS INSTRUMENT: STATUSES
Fan relay
•
on/off
DIAGNOSIS INSTRUMENT: ACTIVATIONS
Fan
•
The fan relay (No. 38 in the wiring dia-
gram) is energised for 10 seconds. The
continuity of the wiring is necessary for
DORSODURO 1200 ABS - ATC Electrical system
ELE SYS - 181
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