ELECTRICAL SYSTEM
10
Coolant temperature sensor
The coolant temperature sensor (1) sends an electrical signal to the engine ECU. To check that the
sensor (1) is functioning correctly, read among the engine parameters represented on the display
the value of the coolant temperature of the engine.
With the engine completely cold, the air temperature should be similar to that of the coolant.
With the engine hot and the cooler fan only just activated, the coolant temperature should be more
or less equal to the fan activation temperature.
If these tests do not give a positive result, renew the coolant temperature sensor.
If this circuit is not faulty (not broken, not shorted and not earthed), renew the sensor.
Sub 10-29
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