Procedure A

Check Power Supply Circuit
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E6.
3. Check voltage between IPDM E/R terminal 16 and ground with CONSULT-II or tester.
  1. Voltage: Battery voltage
OK or NG
1. OK: go to 3.
2. NG: go to 2.
  
  Fig 1: Testing IPDM E/R Circuit (W/DVOM)
  Courtesy of NISSAN MOTOR CO., U.S.A.
Detect Malfunctioning Part
Check the following.
- 40A fusible link
- Harness for open or short between IPDM E/R and battery
  1. Repair open circuit or short to ground or short to power in harness or connectors.
Check Cooling Fan Motor Circuit For Open Or Short
1. Disconnect IPDM E/R harness connector E5.
2. Disconnect cooling fan motor harness connector.
3. Check harness continuity between cooling fan motor terminal 1 and IPDM E/R terminal 11, cooling fan motor terminal 2 and IPDM E/R terminal 8.
  Refer to wiring diagram. See WIRING DIAGRAM .
  1. Continuity should exist .
4. Also check harness for short to ground and short to power.
OK or NG
1. OK: go to 4.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors. See Figure .
Check Cooling Fan Motor Ground Circuit For Open Or Short
1. Check harness continuity between the following;
  cooling fan motor terminal 3 and ground,
  
  cooling fan motor terminal 4 and ground.
  
  Refer to wiring diagram. See WIRING DIAGRAM .
  1. Continuity should exist .
2. Also check harness for short to power.
OK or NG
1. OK: go to 5.
2. NG: Repair open circuit or short to power in harness or connectors.
Check Cooling Fan Motor
Refer to COMPONENT INSPECTION .

OK or NG
1. OK: go to 6.
2. NG: Replace cooling fan motor.
Check Intermittent Incident
Perform TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

OK or NG
1. OK: Replace IPDM E/R. .
2. NG: Repair or replace harness connectors.