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COOLING FAN MOTOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))]

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Cooling fan control system Inspection

1.  Connect the M-MDS to the DLC-2.

2.  Perform the KOEO or KOER self-test using the M-MDS and verify that none of the following DTCs is detected. (See DTC INSPECTION.)

•  P0117:00

•  P0118:00

•  P0480:00

•  P0481:00

―  If any of the following DTCs can be verified, perform the applicable DTC inspection. (See DTC P0117:00 [PCM (SKYACTIV-G)].) (See DTC P0118:00 [PCM (SKYACTIV-G)].) (See DTC P0480:00 [PCM (SKYACTIV-G)].) (See DTC P0481:00 [PCM (SKYACTIV-G)].)

3.  Verify that the engine coolant temperature is less than 97°C {206°F}, and then start the engine and idle it.

4.  Verify that the cooling fan does not operate when the A/C switch is turned off.

•  If it is operating, perform the following inspections.

Inspection items

•  Cooling fan relay No.1 (stuck closed) •  Cooling fan relay No.2 (stuck closed) •  Wiring harness between cooling fan relay No.1 and cooling fan motor (short to power supply) •  Wiring harness between cooling fan relay No.2 and cooling fan motor (short to power supply) •  A/C pressure sensor •  Climate control unit •  CAN communication (PID: AC_REQ constantly ON)

5.  Verify that the cooling fan operates at a low speed when the L_SPD_FAN is turned from OFF to ON using the M-MDS simulation function.

•  If the operation cannot be verified, perform the following inspections.

Cooling fan status	Inspection items
OFF	•  Cooling fan relay No.1 (stuck open) •  Cooling fan motor (internal open circuit) •  Wiring harnesses between battery and cooling fan relay No.1, and cooling fan relay No.1 and cooling fan motor (fuse blown due to open circuit and short to ground) •  Wiring harness between cooling fan motor and ground (open circuit and poor ground)

6.  Verify that the cooling fan operates at a high speed when the H_SPD_FAN is turned from OFF to ON using the M-MDS simulation function.

•  If the operation cannot be verified, perform the following inspections.

Cooling fan status	Inspection items
OFF	•  Cooling fan relay No.2 (stuck open) •  Cooling fan motor (internal open circuit) •  Wiring harnesses between battery and cooling fan relay No.2, and cooling fan relay No.2 and cooling fan motor (fuse blown due to open circuit and short to ground) •  Wiring harness between cooling fan motor and ground (open circuit and poor ground)

Part Inspection

1.  Verify that the battery is fully charged. (See BATTERY INSPECTION [(E)].)

2.  Disconnect the cooling fan motor connector (3 terminals).

3.  Install a tester and battery to the cooling fan motor connector (3 terminals) as shown in the figure.

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4.  Verify that each cooling fan motor operates smoothly at the standard current.

•  If there is any malfunction, replace the applicable part.