Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect cooling fan control module harness connector E37.
3. Turn ignition switch ON.
4. Check the voltage between cooling fan control module 1 harness connector and ground.

   Cooling fan control module 1		Ground	Voltage
   Connector	Terminal
   E37	3	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: GO TO  7.

1. Turn ignition switch OFF.
2. Check the continuity between cooling fan control module 1 harness connector and ground.

   Cooling fan control module 1		Ground	Continuity
   Connector	Terminal
   E37	1	Ground	Existed

3. Also check harness for short to power.

   Is the inspection result normal? 

   YES: GO TO 3.

   NO: Repair open circuit or short to power in harness or connectors.

1. Disconnect IPDM E/R harness connectors E5, E6.
2. Check the continuity between IPDM E/R harness connector and ground.

   IPDM E/R		Ground	Continuity
   Connector	Terminal
   E5	12	Ground	Existed
   E6	41

3. Also check harness for short to power.

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Repair open circuit or short to power in harness or connectors.

1. Disconnect IPDM E/R harness connector E9.
2. Check the continuity between IPDM E/R harness connector and cooling fan control module 1 harness connector.

   IPDM E/R		Cooling fan control module 1		Continuity
   Connector	Terminal	Connector	Terminal
   E9	97	E37	2	Existed

3. Also check harness for short to ground and short to power.

   Is the inspection result normal? 

   YES: GO TO 5.

   NO: Repair open circuit, short to ground or short to power in harness or connectors.

1. Reconnect all harness connectors disconnected.
2. Disconnect cooling fan control module 1 harness connectors E301, E302.
3. Turn ignition switch ON.
4. Check the voltage between cooling fan control module 1 terminals and ground.

   Cooling fan control module 1	Ground	Voltage
   Terminal
   4	Ground	Battery voltage
   6

   Is the inspection result normal? 

   YES: GO TO 6.

   NO: Replace cooling fan control module 1. Refer to "COMPONENT PARTS LOCATION ".

Refer to "COMPONENT INSPECTION (COOLING FAN MOTOR) ".

Is the inspection result normal? 

YES: GO TO  11.

NO: Replace malfunctioning cooling fan motor. Refer to "REMOVAL AND INSTALLATION ".

1. Turn ignition switch OFF.
2. Disconnect cooling fan relay 1.
3. Turn ignition switch ON.
4. Check the voltage between cooling fan relay 1 harness connector and ground.

   Cooling fan relay 1		Ground	Voltage
   Connector	Terminal
   E15	1	Ground	Battery voltage
   	3

   Is the inspection result normal? 

   YES: GO TO  9.

   NO: GO TO 8.

Check the Following:

• 10 A fuse (No. 42)
• IPDM E/R harness connector E7
• 50 A fusible link (letter O)
• Harness for open or short between cooling fan relay 1 and fuse
• Harness for open or short between cooling fan relay 1 and battery

  : Repair open circuit, short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E6.
3. Check the continuity between cooling fan relay 1 harness connector and IPDM E/R harness connector.

   Cooling fan relay 1		IPDM E/R		Continuity
   Connector	Terminal	Connector	Terminal
   E15	2	E6	42	Existed

4. Check the continuity between cooling fan relay 1 harness connector and cooling fan control module 1 harness connector.

   Cooling fan relay 1		Cooling fan control module 1		Continuity
   Connector	Terminal	Connector	Terminal
   E15	5	E37	3	Existed

5. Also check harness for short to ground and short to power.

   Is the inspection result normal? 

   YES: GO TO 10.

   NO: Repair open circuit, short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION (COOLING FAN RELAY) ".

Is the inspection result normal? 

YES: GO TO 11.

NO: Replace cooling fan relay 1.

Perform "INTERMITTENT INCIDENT ".

Is the inspection result normal? 

YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair or replace harness connectors.