Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body. Refer to "GROUND INSPECTION ".
   Fig 1: Checking ECM Ground Connections

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK : GO TO 2.
2. NG : Repair or replace ground connections.

Refer to "COMPONENT INSPECTION ".

OK or NG 

1. OK : GO TO 3.
2. NG : Replace mass air flow sensor (with intake air temperature sensor).

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

Refer to "WIRING DIAGRAM ".

1. : INSPECTION END