Diagnostic Procedure

1. CHECK GROUND CONNECTIONS 

   Models with FDC system, navigation system or telephone 

   1. Turn ignition switch OFF.
   2. Loosen and retighten ground screws on the body. Refer to "GROUND INSPECTION ".
      Fig 1: Identifying Body Ground Screws (Models With FDC System)

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

   Models without FDC system, navigation system and telephone 

   1. Turn ignition switch OFF.
   2. Loosen and retighten ground screws on the body. Refer to "GROUND INSPECTION ".
      Fig 2: Identifying Body Ground Screws (Models Without FDC System)

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

   OK or NG 

   OK: GO TO 2.

   NG: Repair or replace ground connections.

2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT 
   1. Disconnect accelerator pedal position (APP) sensor harness connector.
   2. Turn ignition switch ON.
      Fig 3: Identifying Accelerator Pedal Position Sensor Harness Connector

      Courtesy of NISSAN MOTOR CO., U.S.A.
   3. Check voltage between APP sensor terminal 6 and ground with CONSULT-III or tester.

      Voltage: Approximately 5V 

   OK or NG 

   OK: GO TO  4.

   NG: GO TO 3.

   Fig 4: Checking Voltage Between APP Sensor Terminal 6 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. DETECT MALFUNCTIONING PART 

   Check the following.

   • Harness connectors E108, M15
   • Harness for open or short between ECM and APP sensor

     : Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I 

   Check voltage between APP sensor terminal 4 and ground with CONSULT-III or tester.

   Voltage: Approximately 5V 

   OK or NG 

   OK: GO TO  9.

   NG: GO TO 5.

   Fig 5: Checking Voltage Between APP Sensor Terminal 4 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II 
   1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Check harness continuity between APP sensor terminal 4 and ECM terminal 103. Refer to WIRING DIAGRAM .

      Continuity should exist  .

   OK or NG 

   OK: GO TO  7.

   NG: GO TO 6.

6. DETECT MALFUNCTIONING PART 

   Check the following.

   • Harness connectors E108, M15
   • Harness for open between ECM and APP sensor

     : Repair open circuit.

7. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III 

   Check harness for short to power and short to ground, between the following terminals.

   ECM TERMINAL, SENSOR TERMINAL AND WIRING DIAGRAM REFERENCE
   
   

   ECM terminal	Sensor terminal
   46	CKP sensor (POS) terminal 1
   64	CMP sensor (PHASE) (bank 2) terminal 1
   	EVT CONTROL POSITION SENSOR (BANK 2) TERMINAL 1
   103	APP sensor terminal 4
   107	EVAP control system pressure sensor terminal 3
   111	Refrigerant pressure sensor terminal 1

   OK or NG 

   OK: GO TO 8.

   NG: Repair short to ground or short to power in harness or connectors.

8. CHECK COMPONENTS 

   Check the following.

   • Crankshaft position sensor (POS) (Refer to "COMPONENT INSPECTION ".)
   • Camshaft position sensor (PHASE) (bank 2) (Refer to "COMPONENT INSPECTION ".)
   • Exhaust valve timing control position sensor (bank 2) (Refer to "COMPONENT INSPECTION ".)
   • EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ".)
   • Refrigerant pressure sensor (Refer to "COMPONENT INSPECTION ".)

   OK or NG 

   OK: GO TO  15.

   NG: Replace malfunctioning component.

9. CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 
   1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Check harness continuity between the following;

      APP sensor terminal 3 and ECM terminal 100.

      APP sensor terminal 1 and ECM terminal 104,

      Refer to WIRING DIAGRAM .

      Continuity should exist  .

   4. Also check harness for short to ground and short to power.

   OK or NG 

   OK: GO TO  11.

   NG: GO TO 10.

10. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E108, M15
    • Harness for open or short between ECM and APP sensor

      : Repair open circuit or short to ground or short to power in harness or connectors.

11. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Check harness continuity between the following;

       ECM terminal 97 and APP sensor terminal 5,

       ECM terminal 98 and APP sensor terminal 2.

       Refer to WIRING DIAGRAM .

       Continuity should exist  .

    2. Also check harness for short to ground and short to power.

    OK or NG 

    OK: GO TO  13.

    NG: GO TO 12.

12. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E108, M15
    • Harness for open or short between ECM and APP sensor

      : Repair open circuit or short to ground or short to power in harness or connectors.

13. CHECK APP SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO  15.

    NG: GO TO 14.

14. REPLACE ACCELERATOR PEDAL ASSEMBLY 
    1. Replace accelerator pedal assembly.
    2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
    3. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
    4. Perform "IDLE AIR VOLUME LEARNING ".

       : INSPECTION END 

15. CHECK INTERMITTENT INCIDENT 

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END