Diagnostic procedure

1. Turn ignition switch OFF.
2. Disconnect intake air temperature sensor harness connector.
3. Turn ignition switch ON.
   Fig 1: Disconnecting Intake Air Temperature Sensor Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between terminal 1 and ground with CONSULT-II or tester.

   Voltage : Approximately 5V 

OK or NG 

1. OK : GO TO  3.
2. NG : GO TO 2.
   Fig 2: Checking Voltage Between Terminal And Ground

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

Check the following.

• Harness connectors E43, M65
• Harness connectors M81, F36
• Harness for open or short between ECM and intake air temperature sensor
  1. : Repair harness or connectors.

1. Turn ignition switch OFF.
2. Check harness continuity between intake air temperature sensor terminal 2 and engine ground.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

3. Also check harness for short to power.

OK or NG 

1. OK : GO TO  5.
2. NG : GO TO 4.

Check the following.

• Harness connectors E43, M65
• Harness connectors M81, F36
• Harness for open or short between ECM and intake air temperature sensor
  1. : Repair open circuit or short to power in harness or connectors.

Refer to COMPONENT INSPECTION .

OK or NG 

1. OK : GO TO 6.
2. NG : Replace intake air temperature sensor.

Perform TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

1. : INSPECTION END.