Procedure A

CHECK IPDM E/R POWER SUPPLY CIRCUIT
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-III or tester.
  Voltage: Battery voltage
OK or NG

OK: GO TO 3.

NG: GO TO 2.
DETECT MALFUNCTIONING PART
Check the following.
- 40A fusible link
- Harness for open or short between IPDM E/R and battery
CHECK IPDM E/R GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check harness continuity between IPDM E/R terminals 16, 38, 60 and ground. Refer to Wiring Diagram.
  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.
CHECK COOLING FAN MOTOR-1 CIRCUIT-I
1. Disconnect cooling fan motor-1 harness connector.
  
  Fig 2: Identifying 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-III or tester.
  Voltage: Battery voltage
OK or NG

OK: GO TO 6.

NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
- 40A fusible link
- Harness for open or short between cooling fan motor-1 and battery
CHECK COOLING FAN MOTOR-1 CIRCUIT-II
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.
  
  Continuity should exist .
4. Also check harness for short to ground and 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.
CHECK COOLING FAN MOTOR-2 CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect cooling fan motor-2 harness connector.
  
  Fig 4: Identifying Cooling Fan Motor 1 And 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.
  
  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.
CHECK COOLING FAN MOTOR-2 CIRCUIT-II
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 2 and IPDM E/R terminals 10, 14
  
  Refer to Wiring Diagram.
  
  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.
CHECK COOLING FAN MOTORS
Refer to "COMPONENT INSPECTION ."

OK or NG

OK: GO TO 10.

NG: Replace cooling fan motors.
CHECK INTERMITTENT INCIDENT
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.