ELECTRICAL FAN CONTROL OPERATION [ZJ, ZY]

id0140c4104000


Operation

•  The PCM operates cooling fan relays No.1 and No.2 as indicated in the table below.

Fan operation conditions

Cooling fan relay No.1

Cooling Fan relay No.2

Operation condition
Stop
OFF
OFF
•  Except for low-speed and high speed operation conditions.
Low-speed rotation
ON
OFF
•  Engine coolant temperature is 100°C {212°F} or more
•  When all of the following conditions are met.
―  Vehicle speed is less than 100 km/h {62 mph}
―  A/C on (refrigerant pressure switch (middle) off)
HIgh-speed rotation
ON
ON
•  Engine coolant temperature 108°C {227°F} or more
•  Temperature in PCM is 110°C {230°F} or more
•  ECT sensor malfunction
•  When all of the following conditions are met:
―  A/C on {refrigerant pressure switch (middle) on}
―  Vehicle speed is 100 km/h {62 mph} or less