145 - MiTo   1.4 16v TJet   ENGINE COOLING - FUNCTIONAL DESCRIPTION   E5020   
ENGINE COOLING - DESCRIPTION ENGINE COOLING - FUNCTIONAL DESCRIPTION ENGINE COOLING - WIRING DIAGRAM ENGINE COOLING - COMPONENT LOCATION Print electrical function

FUNCTIONAL DESCRIPTION

Relay switches T06 and T07 of the engine compartment junction unit B001 manage the switching on of the two speed fan N011: the power lines are protected by fuses F06 and F07, also in engine compartment junction unit B001.

Both are energised by an earth control signal coming from the Powertrain Control Module M010.

If the engine coolant reaches an initial temperature level, control unit M010 sends a signal - from pin 39 of connector A - to energise the fan 1st speed relay switch T06, which then sends power to fan N011 via additional resistor O010: the fan turns at the first speed (slow).

If the engine coolant reaches a higher temperature level, control unit M010 sends a signal - from pin 38 of connector A - to energise the fan 2nd speed relay switch T07, which then sends power supply to fan N011 directly: the fan turns at the maximum speed.

The engine temperature sensor K036 measures the engine temperature and receives a reference earth from pin 7 of connector B of control unit M010 and sends a signal proportional to the engine coolant temperature to pin 19 of connector B.