DTC P0480:00 [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)]

DTC P0480:00	Cooling fan control circuit malfunction
DETECTION CONDITION	• The PCM monitors the input voltage from the fan control module. If the voltage at the PCM terminal 2X remains low or high for 5 s, the PCM determines that the fan control circuit has a malfunction. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA is not available. • Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• Fan control module connector or terminals malfunction • Cooling fan relay malfunction • Short to ground or open circuit in cooling fan relay power supply circuit (without i-ELOOP) ― Short to ground in wiring harness between MAIN 200 A fuse and cooling fan relay terminal A ― MAIN 200 A fuse malfunction ― FAN1 30 A fuse malfunction ― Open circuit in wiring harness between battery positive terminal and cooling fan relay terminal A • Short to ground or open circuit in cooling fan relay power supply circuit (with i-ELOOP) ― Short to ground in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and cooling fan relay terminal A ― FAN1 30 A fuse malfunction ― Open circuit in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and cooling fan relay terminal A • Short to ground or open circuit in cooling fan relay power supply circuit ― Short to ground in wiring harness between ENGINE3 20 A fuse and cooling fan relay terminal B ― ENGINE3 20 A fuse malfunction ― Open circuit in wiring harness between main relay terminal C and cooling fan relay terminal B • Open circuit in wiring harness between fan control module terminal C and body ground • Short to ground in wiring harness between cooling fan relay terminal C and fan control module terminal A • Open circuit in wiring harness between cooling fan relay terminal C and fan control module terminal A • PCM connector or terminals malfunction • Short to ground in wiring harness between the following terminals: ― Fan control module terminal B—PCM terminal 2X ― Cooling fan relay terminal D—PCM terminal 2AU • Short to power supply in wiring harness between fan control module terminal B and PCM terminal 2X • Open circuit in wiring harness between the following terminals: ― Fan control module terminal B—PCM terminal 2X ― Cooling fan relay terminal D—PCM terminal 2AU • Fan control module malfunction • PCM malfunction

DTC P0480:00

Cooling fan control circuit malfunction

DETECTION CONDITION

• The PCM monitors the input voltage from the fan control module. If the voltage at the PCM terminal 2X remains low or high for 5 s, the PCM determines that the fan control circuit has a malfunction.

Diagnostic support note

• This is a continuous monitor (other).

• The check engine light does not illuminate.

• FREEZE FRAME DATA is not available.

• Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

• Fan control module connector or terminals malfunction

• Cooling fan relay malfunction

• Short to ground or open circuit in cooling fan relay power supply circuit (without i-ELOOP)

― Short to ground in wiring harness between MAIN 200 A fuse and cooling fan relay terminal A

― MAIN 200 A fuse malfunction

― FAN1 30 A fuse malfunction

― Open circuit in wiring harness between battery positive terminal and cooling fan relay terminal A

• Short to ground or open circuit in cooling fan relay power supply circuit (with i-ELOOP)

― Short to ground in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and cooling fan relay terminal A

― FAN1 30 A fuse malfunction

― Open circuit in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and cooling fan relay terminal A

• Short to ground or open circuit in cooling fan relay power supply circuit

― Short to ground in wiring harness between ENGINE3 20 A fuse and cooling fan relay terminal B

― ENGINE3 20 A fuse malfunction

― Open circuit in wiring harness between main relay terminal C and cooling fan relay terminal B

• Open circuit in wiring harness between fan control module terminal C and body ground

• Short to ground in wiring harness between cooling fan relay terminal C and fan control module terminal A

• Open circuit in wiring harness between cooling fan relay terminal C and fan control module terminal A

• PCM connector or terminals malfunction

• Short to ground in wiring harness between the following terminals:

― Fan control module terminal B—PCM terminal 2X

― Cooling fan relay terminal D—PCM terminal 2AU

• Short to power supply in wiring harness between fan control module terminal B and PCM terminal 2X

• Open circuit in wiring harness between the following terminals:

― Fan control module terminal B—PCM terminal 2X

― Cooling fan relay terminal D—PCM terminal 2AU

• Fan control module malfunction

• PCM malfunction

STEP	INSPECTION	ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the snapshot data on the repair order.	—	Go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
3	INSPECT FAN CONTROL MODULE CONNECTOR CONDITION • Switch the ignition off. • Disconnect the fan control module connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 16.
No	Go to the next step.
4	INSPECT COOLING FAN RELAY • Remove the cooling fan relay. (See RELAY LOCATION.) • Inspect the cooling fan relay. (See RELAY INSPECTION.) • Is there any malfunction?	Yes	Replace the cooling fan relay, then go to Step 16.
No	Vehicles with i-ELOOP: • Go to Step 6. Vehicles without i-ELOOP: • Go to the next step.
5	INSPECT COOLING FAN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Cooling fan relay is removed. • Verify that the fan control module connector is disconnected. • Measure the voltage at the cooling fan relay terminal A (wiring harness-side). • Is the voltage B+?	Yes	Go to Step 7.
No	Inspect the MAIN 200 A fuse and FAN1 30 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and cooling fan relay terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Replace the malfunctioning fuse. • If the fuse is damaged: ― Replace the malfunctioning fuse. • If all fuses are normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and cooling fan relay terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 16.
6	INSPECT COOLING FAN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Cooling fan relay is removed. • Verify that the fan control module connector is disconnected. • Measure the voltage at the cooling fan relay terminal A (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
No	Remove the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) Inspect the FAN1 30 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between FAN1 30 A fuse and cooling fan relay terminal A. If there is a common connector: • Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which is shorted to ground, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness. • Replace the fuse. • If the fuse is damaged: ― Replace the fuse. • If the fuse is normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between DC-DC converter (i-ELOOP) terminal 4A and cooling fan relay terminal A. If there is a common connector: • Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness. Reinstall the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) Go to Step 16.
7	INSPECT COOLING FAN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Cooling fan relay is removed. • Verify that the fan control module connector is disconnected. • Switch the ignition ON (engine off). • Measure the voltage at the cooling fan relay terminal B (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
No	Inspect the ENGINE3 20 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE3 20 A fuse and cooling fan relay terminal B. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Replace the fuse. • If the fuse is damaged: ― Replace the fuse. • If the fuse is normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between main relay terminal C and cooling fan relay terminal B. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 16.
8	INSPECT FAN CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT • Cooling fan relay is removed. • Verify that the fan control module connector is disconnected. • Switch the ignition off. • Inspect for continuity between fan control module terminal C (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
No	Refer to the wiring diagram and verify whether or not there is a common connector between fan control module terminal C and body ground. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Inspect for the following: ― Open circuit between fan control module and body ground ― Loose or lifting ground point • Repair or replace the malfunctioning part. Go to Step 16.
9	INSPECT FAN CONTROL MODULE POWER SUPPLY CIRCUIT FOR SHORT TO GROUND • Cooling fan relay is removed. • Verify that the fan control module connector is disconnected. • Inspect for continuity between cooling fan relay terminal C (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between cooling fan relay terminal C and fan control module terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 16.
No	Go to the next step.
10	INSPECT FAN CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Cooling fan relay is removed. • Verify that the fan control module connector is disconnected. • Inspect for continuity between cooling fan relay terminal C (wiring harness-side) and fan control module terminal A (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
No	Refer to the wiring diagram and verify whether or not there is a common connector between cooling fan relay terminal C and fan control module terminal A. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 16.
11	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 16.
No	Go to the next step.
12	INSPECT FAN CONTROL MODULE AND COOLING FAN RELAY CIRCUIT FOR SHORT TO GROUND • Cooling fan relay is removed. • Verify that the fan control module and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Fan control module terminal B ― Cooling fan relay terminal D • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Fan control module terminal B—PCM terminal 2X • Cooling fan relay terminal D—PCM terminal 2AU If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 16.
No	Go to the next step.
13	INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Cooling fan relay is removed. • Verify that the fan control module and PCM connectors are disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the PCM detecting an open circuit. • Measure the voltage at the fan control module terminal B (wiring harness-side). • Is the voltage 0 V?	Yes	Go to the next step.
No	Refer to the wiring diagram and verify whether or not there is a common connector between fan control module terminal B and PCM terminal 2X. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 16.
14	INSPECT FAN CONTROL MODULE AND COOLING FAN RELAY CIRCUIT FOR OPEN CIRCUIT • Cooling fan relay is removed. • Verify that the fan control module and PCM connectors are disconnected. • Switch the ignition off. • Inspect for continuity between the following terminals (wiring harness-side): ― Fan control module terminal B—PCM terminal 2X ― Cooling fan relay terminal D—PCM terminal 2AU • Is there continuity?	Yes	Go to the next step.
No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Fan control module terminal B—PCM terminal 2X • Cooling fan relay terminal D—PCM terminal 2AU If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 16.
15	INSPECT FAN CONTROL MODULE • Inspect the fan control module. (See FAN CONTROL MODULE INSPECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0].) • Is there any malfunction?	Yes	Replace the fan control module, then go to the next step. (See COOLING FAN MOTOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0].)
No	Go to the next step.
16	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)].) • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0].) Go to the next step.
No	Go to the next step.
17	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

• Recording can be facilitated using the screen capture function of the PC.

• Record the snapshot data on the repair order.

—

Go to the next step.

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Information availability.

• Is any related Service Information available?

Yes

Perform repair or diagnosis according to the available Service Information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

INSPECT FAN CONTROL MODULE CONNECTOR CONDITION

• Switch the ignition off.

• Disconnect the fan control module connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 16.

Go to the next step.

INSPECT COOLING FAN RELAY

• Remove the cooling fan relay.

(See RELAY LOCATION.)

• Inspect the cooling fan relay.

(See RELAY INSPECTION.)

• Is there any malfunction?

Yes

Replace the cooling fan relay, then go to Step 16.

Vehicles with i-ELOOP:

• Go to Step 6.

Vehicles without i-ELOOP:

• Go to the next step.

INSPECT COOLING FAN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT

• Cooling fan relay is removed.

• Verify that the fan control module connector is disconnected.

• Measure the voltage at the cooling fan relay terminal A (wiring harness-side).

• Is the voltage B+?

Yes

Go to Step 7.

Inspect the MAIN 200 A fuse and FAN1 30 A fuse.

• If the fuse is blown:

― Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and cooling fan relay terminal A.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

• Replace the malfunctioning fuse.

• If the fuse is damaged:

― Replace the malfunctioning fuse.

• If all fuses are normal:

― Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and cooling fan relay terminal A.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 16.

INSPECT COOLING FAN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT

• Cooling fan relay is removed.

• Verify that the fan control module connector is disconnected.

• Measure the voltage at the cooling fan relay terminal A (wiring harness-side).

• Is the voltage B+?

Yes

Go to the next step.

Remove the service plug.

(See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].)

Inspect the FAN1 30 A fuse.

• If the fuse is blown:

― Refer to the wiring diagram and verify whether or not there is a common connector between FAN1 30 A fuse and cooling fan relay terminal A.

If there is a common connector:

• Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which is shorted to ground, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness.

• Replace the fuse.

• If the fuse is damaged:

― Replace the fuse.

• If the fuse is normal:

― Refer to the wiring diagram and verify whether or not there is a common connector between DC-DC converter (i-ELOOP) terminal 4A and cooling fan relay terminal A.

If there is a common connector:

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness.

Reinstall the service plug.

(See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].)

Go to Step 16.

INSPECT COOLING FAN RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT

• Cooling fan relay is removed.

• Verify that the fan control module connector is disconnected.

• Switch the ignition ON (engine off).

• Measure the voltage at the cooling fan relay terminal B (wiring harness-side).

• Is the voltage B+?

Yes

Go to the next step.

Inspect the ENGINE3 20 A fuse.

• If the fuse is blown:

― Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE3 20 A fuse and cooling fan relay terminal B.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

• Replace the fuse.

• If the fuse is damaged:

― Replace the fuse.

• If the fuse is normal:

― Refer to the wiring diagram and verify whether or not there is a common connector between main relay terminal C and cooling fan relay terminal B.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 16.

INSPECT FAN CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT

• Cooling fan relay is removed.

• Verify that the fan control module connector is disconnected.

• Switch the ignition off.

• Inspect for continuity between fan control module terminal C (wiring harness-side) and body ground.

• Is there continuity?

Yes

Go to the next step.

Refer to the wiring diagram and verify whether or not there is a common connector between fan control module terminal C and body ground.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Inspect for the following:

― Open circuit between fan control module and body ground

― Loose or lifting ground point

• Repair or replace the malfunctioning part.

Go to Step 16.

INSPECT FAN CONTROL MODULE POWER SUPPLY CIRCUIT FOR SHORT TO GROUND

• Cooling fan relay is removed.

• Verify that the fan control module connector is disconnected.

• Inspect for continuity between cooling fan relay terminal C (wiring harness-side) and body ground.

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between cooling fan relay terminal C and fan control module terminal A.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 16.

Go to the next step.

INSPECT FAN CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT

• Cooling fan relay is removed.

• Verify that the fan control module connector is disconnected.

• Inspect for continuity between cooling fan relay terminal C (wiring harness-side) and fan control module terminal A (wiring harness-side).

• Is there continuity?

Yes

Go to the next step.

Refer to the wiring diagram and verify whether or not there is a common connector between cooling fan relay terminal C and fan control module terminal A.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 16.

INSPECT PCM CONNECTOR CONDITION

• Disconnect the PCM connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 16.

Go to the next step.

INSPECT FAN CONTROL MODULE AND COOLING FAN RELAY CIRCUIT FOR SHORT TO GROUND

• Cooling fan relay is removed.

• Verify that the fan control module and PCM connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side) and body ground:

― Fan control module terminal B

― Cooling fan relay terminal D

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Fan control module terminal B—PCM terminal 2X

• Cooling fan relay terminal D—PCM terminal 2AU

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 16.

Go to the next step.

INSPECT FAN CONTROL MODULE SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY

• Cooling fan relay is removed.

• Verify that the fan control module and PCM connectors are disconnected.

• Switch the ignition ON (engine off).

Note

• Another DTC may be stored by the PCM detecting an open circuit.

• Measure the voltage at the fan control module terminal B (wiring harness-side).

• Is the voltage 0 V?

Yes

Go to the next step.

Refer to the wiring diagram and verify whether or not there is a common connector between fan control module terminal B and PCM terminal 2X.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to power supply.

Go to Step 16.

INSPECT FAN CONTROL MODULE AND COOLING FAN RELAY CIRCUIT FOR OPEN CIRCUIT

• Cooling fan relay is removed.

• Verify that the fan control module and PCM connectors are disconnected.

• Switch the ignition off.

• Inspect for continuity between the following terminals (wiring harness-side):

― Fan control module terminal B—PCM terminal 2X

― Cooling fan relay terminal D—PCM terminal 2AU

• Is there continuity?

Yes

Go to the next step.

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Fan control module terminal B—PCM terminal 2X

• Cooling fan relay terminal D—PCM terminal 2AU

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 16.

INSPECT FAN CONTROL MODULE

• Inspect the fan control module.

(See FAN CONTROL MODULE INSPECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0].)

• Is there any malfunction?

Yes

Replace the fan control module, then go to the next step.

(See COOLING FAN MOTOR REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0].)

Go to the next step.