Electric Fan Circuit - Malaguti Dune X 125 Service Station Manual

Electrical system

Electric fan circuit

Function
Activates coolant radiator fan
Operation / Operating principle
When the ECU detects a temperature of approxi-
mately 101°C, it closes the connection between
the fan control relay excitation circuit and ground
Level in electrical circuit diagram:
Electric fan.
Position:

sensor: relay installed in front frame re-
cess on left hand side

connector: on relay
DIAGNOSTIC TOOL:STATUSES
Fan relay

on/off
DIAGNOSTIC TOOL:ACTIVATIONS
Fan

The fan relay is excited (No. 42 in elec-
trical circuit diagram - ALWAYS
CHECK colour of wires to identify relay
correctly) for 10 seconds. Electrical
continuity is required in the wiring for
the relay to activate correctly: no errors
are generated if the relay fails to acti-
vate
ELECTRICAL ERRORS
Fan relay P0480 - short circuit to positive / short circuit to negative / open circuit.
Error cause
Short-circuit to positive: excessive voltage to PIN 24 of the control unit connector.
Short circuit to negative: null voltage at PIN 24 of the control unit connector.
Open circuit: circuit interruption.
Troubleshooting
Short-circuit to positive:
ELE SYS - 100
Dune 125 - Dune X 125 - Euro 4