Diagnostic Procedure

SYMPTOM: Intake sensor circuit is open or shorted.

Fig 1: Identifying Intake Sensor Circuit

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

1. CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND BODY GROUND 

   Disconnect intake sensor harness connector.

   TERMINAL CONTINUITY REFERENCE
   
   

   Terminals			Continuity
   (+)		(-)
   Connector	Terminal No. (Wire color)	Body ground	Yes
   M49	2 (B)

   OK or NG 

   OK: GO TO 2.

   NG: Repair harness or connector.

   Fig 2: Checking Intake Sensor Circuit Between Intake Sensor And Body Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AIR CONTROL 

   Disconnect air control harness connector.

   TERMINAL CONTINUITY REFERENCES
   
   

   Terminals				Continuity
   (+)		(-)
   Connector	Terminal No. (Wire color)	Connector	Terminal No. (Wire color)	Yes
   M49	1(GY)	M32	12 (GY)

   OK or NG 

   OK: GO TO 3.

   NG: Repair harness or connector.

   Fig 3: Checking Intake Sensor Circuit Between Intake Sensor And Air Control

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. CHECK INTAKE SENSOR 

   Refer to "INTAKE SENSOR CIRCUIT ".

   OK or NG 

   OK: Replace air control.

   NG: Replace intake sensor.