Fan Control Module Check

Required Special Tool: 

• MB992006: Extra Fine Probe

1. Remove the center under cover (Refer to FRONT BUMPER ).
2. Disconnect the fan control module connector.
3. Turn the ignition switch to the "ON" position, and measure the voltage between the harness-side connector terminals.

   Standard value: Battery positive voltage 

4. Turn the ignition switch to the "LOCK" (OFF) position, and connect the fan control module connector.
   Fig 1: Measuring Voltage Between Fan Control Module Connector Terminal 1 And 3

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
5. Insert special tool MB992006 at the back of the cooling fan motor connector.
6. Connect special tool MB992006 to the circuit tester.
7. Ensure that the A/C switch is off, and start the engine and run it at idle.
8. Measure the voltage between the cooling fan motor connector terminals.

   Standard value: 1 V or less 

9. Turn the A/C switch to the "ON" position.
   WARNING: Stay clear of the fan when the fan starts running.
10. Measure the voltage between the cooling fan motor connector terminals while the fan is running. The voltage should repeat the values 1) and 2) below.

    Standard value: 

    1) 8.2 +/-2.6 V 

    2) Battery positive voltage +/-2.6 V 

11. If the voltage does not repeatedly change as indicated, replace the fan control module.
12. Install the center under cover (Refer to FRONT BUMPER ).
    Fig 2: Measuring Voltage Between Fan Control Module Connector Terminal 1 And 2

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.