grand dink 125 mmc 1 Manuel atelier : Page 238

          19. SWITCHES/HORN/FUELUNIT/THERMOSTATICSWITCH
   /TEMPERATUREGAUGE/INSTRUMENTS/LIGHTS                          GRAND DINK 125/150


                                                    Thermostatic Switch
 THERMOSTATIC SWITCH
 INSPECTION
 Remove the front covers. ( 2-5)
 Start and run the engine to make the water
 temperature reaches 8590 and
 check if the cooling fan motor operates.
 Lower the water temperature to 85 and
 check if the fan motor stops.
 If the fan motor does not start, disconnect
 the wires from the thermostatic switch and
 then connect a jumper wire between the              Wire
 wire harness and thermosensor wires (black
 and green wires).

 Turn the ignition switch ON. The
 thermostatic switch is faulty if the cooling
 fan motor runs properly.
 If it does not start, check for voltage
 between the fan motor coupler wire
 terminals (blackgreen).
 If there is no voltage, check for the
 following:
 · Blown or faulty fuse
 · Loose terminals or connectors
 · Shorted wire in the wire harness

 TEMPERATURE GAUGE
 Disconnect the wire from the thermosensor
 and ground it to the engine.
 Turn the ignition switch ON.
 The temperature gauge needle should move
 all the way to "H".
 Do not leave the thermosensor wire
    grounded for longer than 5 seconds or
    the temperature gauge will be damaged.

 HEATER CONTROLER UNIT
 INSPECTION
 1.      Open ignition switch to check if the
   black wire of it is enough voltage.
 2.      Put the heater controler unit in
   refrigerator. Start engine after keeping the
   temperature under 104.
 3.      Check if the yellow wire of heater
   controler unit has output voltage.
 Start engine and if the temperature of heater
 controler unit is under 104. Check if the
 white/blue wire of heater controler unit has
 output voltage. If it has not any voltage. It is
 damaged.

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