Procedure A

CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors E5 and E6.
3. Check voltage between IPDM E/R terminals 15, 16 and ground with CONSULT-II or tester.
  Voltage: Battery voltage
OK or NG
1. OK: GO TO 3.
2. NG: GO TO 2.
  
  Fig 1: Checking Voltage Between IPDM E/R Terminals 15, 16 And Ground With CONSULT-II Or Tester
  Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING PART
Check the following.
- 40A fusible links
- 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 MOTORS CIRCUIT
1. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
2. Check harness continuity between cooling fan motor-1 terminal 1 and IPDM E/R terminal 10, cooling fan motor-1 terminal 4 and ground.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
3. Also check harness for short to ground and short to power.
4. Check harness continuity between cooling fan motor-2 terminal 1 and IPDM E/R terminal 11, cooling fan motor-2 terminal 4 and ground.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
5. Also check harness for short to ground and short to power.
  
  Fig 2: Checking Cooling Fan Motors Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
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.
CHECK COOLING FAN MOTORS
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK: GO TO 5.
2. NG: Replace cooling fan motors.
CHECK INTERMITTENT INCIDENT
Perform "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

OK or NG
1. OK: Replace IPDM E/R. Refer to IPDM E/R.
2. NG: Repair or replace harness or connector.