FAN CONTROL MODULE INSPECTION [SKYACTIV-G 2.5T]

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Note

•  The fan control module cannot be removed as a single unit. If the fan control module is replaced, replace the cooling fan component.

1.  Connect the M-MDS to the DLC-2.

2.  Start and warm up the engine.

3.  Gradually increase the FAN_DUTY value from 0 to the maximum possible M-MDS operation value using the simulation function. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].)

•  Visually verify that the operation speed of the cooling fan conforms to the override drive.

4.  Using the M-MDS, change the operation condition of the A/C while measuring the engine coolant temperature under the following conditions, and verify that the cooling fan operates correctly.

•  Because there is an intake air temperature decrease control setting, the cooling fan may operate when IAT sensor No.1 detects 60 °C {140 °F} or more according to conditions other than those mentioned.

•  Because there is an engine protection control setting, the cooling fan may operate when IAT sensor No.2 detects 70 °C {158 °F} or more according to conditions other than those mentioned.

Fan control module No.1, No.2 [A/C OFF]

5.  Verify that the FAN_DUTY value is a value other than 0 while measuring the vehicle speed under the following conditions using the M-MDS.

Fan control module No.1, No.2 [A/C ON]

6.  If normal operation cannot be verified in Steps 3, 4 and 5, inspect the input signals of the following parts. Replace the cooling fan motor if all the following parts are normal.

•  ECT sensor

•  Refrigerant pressure sensor

•  Battery