Radiator Cooling Fan Control Module: Testing and Inspection

FAN CONTROL MODULE INSPECTION [MZI 3.7 V6]

1. Connect the M-MDS to the DLC-2.

2. Start and warm up the engine.

3. Monitor the engine coolant temperature with the M-MDS.

4. Measure the voltage at terminal A of the fan control module connector (2 terminals) as shown in the table.






- If not within the specification, inspect the input signals from the following parts.

- Cylinder Head Temperature (CHT) sensor
- Refrigerant pressure switch (middle)

Fan control module [A/C OFF (Ambient temp. -5-43 °C {23-109 °F})]





Fan control module [A/C ON (Ambient temp. -1-43 °C {31-109 °F})]





5. If all the above parts are normal, replace the fan control module.