FAN CONTROL MODULE CONSTRUCTION/OPERATION
BME011215025T02
Structure
• The fan control module is installed on the radiator cowling.
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1
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Fan control module
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2
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Power supply (1 terminal)
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3
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PCM/ Ground (2 terminals)
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4
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Radiator cowling
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5
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Front
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Operation
• The fan control module drives both fan motors based on the cooing fan control signal sent by the PCM.
• The fan control module has a power supply function described below.
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1
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Fan control module
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2
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Main fan motor
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3
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Additional fan motor
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4
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PCM
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1. Over-current fail-safe
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- If current to the fan motor exceeds the specified value, the fan control module is set to the output duty value.
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- If current to the fan motor returns to the specified value, the fan control module returns to normal control.
2. Over heat fail-safe
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- If the internal area of the fan conrol module exceeds the specified temperature, the fan control module is set to the output duty value.
3. Input signal open circuit fail-safe
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- If there is an open circuit in the harness between the PCM and the fan control module, the fan control module is set to the output value.