FAN CONTROL MODULE INSPECTION [SKYACTIV-D 2.2]

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ATX

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.

Caution
•  Do not perform the following inspection during diesel particulate filter regeneration.

3.  Using the simulation function, gradually increase the FAN_DUTY value from 0% to 90%. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

•  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.

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

Engine coolant temperature °C {°F}

Cooling fan operation status
less than 98 {208}
Off
more than 100 {212}
On

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]

Vehicle speed (km/h {mph})

Cooling fan operation status
less than 85 {52}
On
more than 85 {53}
Off

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


MTX

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 B of the fan control module connector as shown in the table.

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•  If not within the specification, inspect the input signals from the following parts. If all the following parts are normal, replace the fan control module.
―  ECT sensor
―  Refrigerant pressure sensor
―  Battery
―  DSC (HU/CM)

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

Inspection

Result

Engine coolant temp. (°C {°F})

PID FAN DUTY (%)

Voltage (V)
less than 98 {208}
30
3.6
100—106 {212—222}
30—75
3.6—9.0
106—108 {223—226}
75
9.0
more than 108 {226}
100
0.4 lower than battery voltage

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

Inspection

Result

Refrigerant pressure (MPa {kgf/cm2, psi})

PID FAN DUTY (%)

Voltage (V)
less than 1.0 {10, 145}
30
3.6
1.0—1.7 {11—17, 146—246}
30—75
3.6—9.0
1.7—1.9 {18—19, 247—275}
75
9.0
more than 1.9 {19, 276}
100
0.4 lower than battery voltage