Fan Control Module Inspection

WARNING: This page is about a different variant/trim than selected.

Connect the M-MDS to the DLC-2.
Start and warm up the engine.
Monitor the engine coolant temperature with the M-MDS.
Gradually increase the PCM simulation item [FAN] value from 0 to the maximum possible M-MDS operation value using the simulation function. (See SIMULATION INSPECTION .) (See SIMULATION TABLE [PCM (VIN Y)] .)
- Visually verify that the operation speed of the cooling fan conforms to the override drive.

Using the M-MDS, change the operation condition of 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.

Engine coolant temperature °C {°F}	Cooling fan operation status
less than 101 {214}	0%
103-108 {218-226}	15%
more than 108 {226}	86%

If normal operation cannot be verified in Steps 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