Procedure A

CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E44.
3. Check voltage between IPDM E/R terminal 22 and ground with CONSULT-III 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 22 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING PART
Check the following.
- 50A fusible link
- Harness for open or short between IPDM E/R and battery
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK COOLING FAN MOTOR CIRCUIT
1. Disconnect cooling fan motor harness connector (1).
  - <== : Vehicle front
  - Resistor (2)
2. Disconnect IPDM E/R harness connectors E46 and E48.
3. Check harness continuity between the following;
  cooling fan motor terminal 1 and IPDM E/R terminal 24,
  
  cooling fan motor terminal 2 and ground.
  
  Refer to wiring diagram.
  
  Continuity should exist .
  
  Fig 2: Identifying Cooling Fan Motor Harness Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Also check harness for short to ground and short to power.
5. Check harness continuity between IPDM E/R terminal 20 and cooling fan motor terminal 1.
  Refer to wiring diagram.
  
  Continuity should exist .
6. Also check harness for short to ground and short to power.
7. Check harness continuity between IPDM E/R terminals 39, 59 and ground.
  Refer to Wiring Diagram.
  
  Continuity should exist .
8. Also check harness for short to ground and short to power.
  OK or NG
  
  OK : GO TO 5.
  
  NG : GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between cooling fan motor and IPDM E/R
- Harness for open or short between cooling fan motor and ground
- Resistor E5
  Repair open circuit or short to ground or short to power in harness or connectors.
CHECK COOLING FAN MOTOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK : GO TO 6.

NG : Replace cooling fan motor.
CHECK INTERMITTENT INCIDENT
Perform TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG

OK : Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION OF IPDM E/R .

NG : Repair or replace harness or connector.