Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IPDM E/R POWER SUPPLY AND GROUND CIRCUIT
Refer to "DIAGNOSIS PROCEDURE ".

OK or NG

OK: GO TO 2.

NG: Follow the instructions on "DIAGNOSIS PROCEDURE ".
CHECK COOLING FAN MOTOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E120.
3. Disconnect cooling fan motor (1) harness connector.
4. Check harness continuity between the following terminals; cooling fan motor terminal 1 and IPDM E/R terminal 20, cooling fan motor terminal 2 and IPDM E/R terminal 24.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
5. Also check harness for short to ground and short to power.
Fig 1: Identifying Cooling Fan Motor
Courtesy of NISSAN NORTH AMERICA, INC.

OK or NG

OK: GO TO 3.

NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK COOLING FAN MOTER GROUND CIRCUIT FOR OPEN OR SHORT
1. Check harness continuity between the following terminals; cooling fan motor terminal 3 and ground, cooling fan motor terminal 4 and ground.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
2. 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
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 5.

NG: Replace cooling fan motor. Refer to "EXPLODED VIEW ".
CHECK INTERMITTENT INCIDENT
Perform "INTERMITTENT INCIDENT ".

OK or NG

OK: INSPETION END

NG: Repair or replace harness or connector.