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FAN CONTROL MODULE CONSTRUCTION/OPERATION

BME011215025T01

Structure

• The fan control module is installed on the radiator cowling.

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1 | Fan control module
2 | Power supply (1 terminal)
3 | PCM/ Ground (2 terminals)
4 | Radiator cowling
5 | Front

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.

1 | Fan control module
2 | Main fan motor
3 | Additional fan motor
4 | PCM

1. Over-current fail-safe

  - If current to the fan motor exceeds the specified value, the fan control module is set to the output duty value.
  - If current to the fan motor returns to the specified value, the fan control module returns to normal control.

2. Over heat fail-safe

  - 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

  - 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.