Diagnosis Procedure

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

   Cooling fan control module		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 harness connector and ground.

   Cooling fan control module		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.
2. Check the continuity between IPDM E/R harness connector and ground.

   IPDM E/R		Ground	Continuity
   Connector	Terminal
   E5	11	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.
2. Check the continuity between IPDM E/R harness connector and cooling fan control module harness connector.

   IPDM E/R		Cooling fan control module		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 harness connectors.
3. Turn ignition switch ON.
4. Check the voltage between cooling fan control module harness connector and ground.

   Cooling fan control module		Ground	Voltage
   Connector	Terminal
   E301	4	Ground	Battery voltage
   E302	6

   Is the inspection result normal? 

   YES: GO TO 6.

   NO: Replace cooling fan control module. Refer to "EXPLODED VIEW ".

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

Is the inspection result normal? 

YES: GO TO  11.

NO: Replace cooling fan motor. Refer to "EXPLODED VIEW ".

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

   Cooling fan relay		Ground	Voltage
   Connector	Terminal
   E17	1	Ground	Battery voltage
   	3

   Is the inspection result normal? 

   YES: GO TO  9.

   NO: GO TO 8.

Check the following.

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

   Cooling fan relay		IPDM E/R		Continuity
   Connector	Terminal	Connector	Terminal
   E17	2	E7	73	Existed

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

   Cooling fan relay		Cooling fan control module		Continuity
   Connector	Terminal	Connector	Terminal
   E17	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.

Perform "INTERMITTENT INCIDENT ".

Is the inspection result normal? 

YES: Replace IPDM E/R. Refer to "EXPLODED VIEW ".

NO: Repair or replace harness connectors.