Procedure A

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors E123.
3. Check voltage between IPDM E/R terminal 15 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG

• OK: GO TO  3.
• NG: GO TO  2.
  Fig 1: Checking Voltage Between IPDM E/R Terminal 15 & Ground

  Courtesy of NISSAN MOTOR CO., U.S.A.

Check the following.

• 40A fusible link
• Harness for open or short between IPDM E/R and battery

• Repair open circuit or short to ground in harness or connectors.

1. Turn ignition switch OFF.
2. Check harness continuity between IPDM E/R terminal 16 and ground. Refer to WIRING DIAGRAM - COOL/F .

   Continuity should exist. 

3. Also check harness for short to power.

OK or NG

• OK: GO TO  4.
• NG: Repair open circuit or short to power in harness or connectors.

1. Disconnect cooling fan motor-1 harness connector.
   Fig 2: Disconnecting Cooling Fan Motor-1 Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check voltage between cooling fan motor-1 terminals 1, 2 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG

• OK: GO TO  6.
• NG: GO TO  5.
  Fig 3: Checking Voltage Between Cooling Fan Motor-1 Terminals 1, 2 & Ground

  Courtesy of NISSAN MOTOR CO., U.S.A.

Check the following.

• 40A fusible link
• Harness for open or short between cooling fan motor-1 and battery

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

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E118.
3. Check harness continuity between the following terminals. Cooling fan motor-1 terminal 3 and IPDM E/R terminal 8 Cooling fan motor-1 terminal 4 and IPDM E/R terminals 11, 12 Refer to WIRING DIAGRAM - COOL/F .

   Continuity should exist. 

4. Also check harness for short to ground or short to power.

OK or NG

• OK: GO TO  7.
• NG: Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect cooling fan motor-2 harness connector.
   Fig 4: Disconnecting Cooling Fan Motor-2 Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check harness continuity between cooling fan motor-2 terminals 3, 4 and ground. Refer to WIRING DIAGRAM - COOL/F .

   Continuity should exist. 

4. Also check harness for short to power.

OK or NG

• OK: GO TO  8.
• NG: Repair open circuit or short to power in harness or connectors.

1. Check harness continuity between the following terminals. Cooling fan motor-2 terminal 1 and IPDM E/R terminal 13 Cooling fan motor-2 terminal and IPDM E/R terminals 10, 14 Refer to WIRING DIAGRAM - COOL/F .

   Continuity should exist. 

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

OK or NG

• OK: GO TO  9.
• NG: Repair open circuit or short to ground or short to power in harness or connectors.

Refer to COMPONENT INSPECTION .

OK or NG

• OK: GO TO  10.
• NG: Replace cooling fan motors.

Perform TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG

• OK: Replace IPDM E/R. Refer to IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) .
• NG: Repair or replace harness or connector.