Procedure B

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

CHECK COOLING FAN MOTORS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
3. Disconnect all IPDM E/R harness connectors.
4. Check harness continuity between the following; cooling fan motor-1 terminal 1 and IPDM E/R terminal 8, cooling fan motor-1 terminal 4 and IPDM E/R terminal 9, IPDM E/R terminal 14, 38, 60 and ground, Refer to WIRING DIAGRAM .
  - Continuity should exist.
  Fig 1: Locating Cooling Fan Motor Harness Connectors
  Courtesy of NISSAN MOTOR CO., U.S.A.
5. Also check harness connector for short to ground or short to power.
6. Check harness continuity between the following; cooling fan motor-2 terminal 1 and IPDM E/R terminal 13, cooling fan motor-2 terminal 4 and IPDM E/R terminal 12, Refer to WIRING DIAGRAM .
  - Continuity should exist.
7. Also check harness for short to ground and short to power.
OK or NG
- OK: GO TO 3.
- NG: GO TO 2.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connector E12, F3
- Harness connector F103, F151
- Harness for open or short between cooling fan motors-1, 2 and IPDM E/R
- Harness for open or short between IPDM E/R and ground
  - : 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 4.
- 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 connectors.