COOLING FAN MOTOR INSPECTION [SKYACTIV-G 2.5]

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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 isdetected. (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 2.5)].) (See DTC P0118:00 [PCM (SKYACTIV-G 2.5)].) (See DTC P0480:00 [PCM (SKYACTIV-G 2.5)].) (See DTC P0481:00 [PCM (SKYACTIV-G 2.5)].)

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.

Cooling fan status		Inspection items
Cooling fan No.1	Cooling fan No.2
Low	Low	•  Cooling fan relay No.2 (stuck closed))
High	High	•  A/C pressure sensor •  Climate control unit •  CAN communication (PID: AC_REQ constantly ON)
Off	High	•  Cooling fan relay No.3 (stuck closed)

5.  When FAN1 is turned from off to on using the M-MDS simulation function, verify that cooling fans No.1, and 2 operate at low speed.

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

Cooling fan status		Inspection items
Cooling fan No.1	Cooling fan No.2
Off	Off	•  Cooling fan relay No.2 (stuck closed) •  Cooling fan No.1 (internal open circuit) •  Cooling fan No.2 (internal open circuit) •  Wiring harnesses between battery and cooling fan relay No.2 and cooling fan No.1 (fuse blown due to open circuit and short to ground) •  Wiring harnesses between cooling fan No.1 and cooling fan relay No.3 and cooling fan No.2 (open circuit) •  Wiring harness between cooling fan No.2 and ground (open circuit and poor ground)
High	Off	•  Cooling fan relay No.1 (stuck closed) •  Wiring harnesses between cooling fan No.1 and cooling fan relay No.3 and cooling fan No.2 (short to ground)*

6.  When FAN1 and FAN3 are turned from off to on using the M-MDS simulation function, verify that cooling fans No.1 and 2 operate at high speed.

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

Cooling fan status		Inspection items
Cooling fan No.1	Cooling fan No.2
Off	High	•  Cooling fan relay No.1 (stuck open) •  Wiring harness between cooling fan relay No.1 and ground (open circuit and poor ground)
High	Off	•  Cooling fan relay No.3 (stuck open) •  Wiring harness between battery and cooling fan relay No.3 (fuse blown due to open circuit and short to ground)

Part Inspection

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

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

3.  Install a tester and battery to the cooling fan motor connector (2 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.