Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CHECK GROUND CONNECTION 
   1. Turn ignition switch OFF.
   2. Check ground connection E9. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace ground connection.

2. CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-I 
   1. Disconnect crankshaft position (CKP) sensor (POS) harness connector.
   2. Turn ignition switch ON.
   3. Check the voltage between CKP sensor (POS) harness connector and ground.

      CKP sensor (POS)		Ground	Voltage (V)
      Connector	Terminal
      F30	1	Ground	Approx. 5

      Is the inspection result normal? 

      YES: GO TO  8.

      NO: GO TO 3.

      Fig 1: Checking Voltage Between CKP Sensor Terminal 1 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.
3. CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-II 
   1. Turn ignition switch ON.
   2. Disconnect ECM harness connector.
   3. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

      CKP sensor (POS)		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      F30	1	F13	76	Existed

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair open circuit.

4. CHECK SENSOR POWER SUPPLY CIRCUIT 

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

   ECM		Sensor
   Connector	Terminal	Name	Connector	Terminal
   F13	72	Refrigerant pressure sensor	E219	1
   	76	CKP sensor (POS)	F30	1
   E10	87	APP sensor	E40	6
   	91	EVAP control system pressure sensor	B41	3

   Is the inspection result normal? 

   YES: GO TO 5.

   NO: Repair short to ground or short to power in harness or connectors.

5. CHECK COMPONENTS 

   Check the following.

   • EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ".)
   • Refrigerant pressure sensor (Refer to "DIAGNOSIS PROCEDURE ".)

     Is the inspection result normal? 

     YES: GO TO 6.

     NO: Replace malfunctioning components.

6. CHECK APP SENSOR 

   Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO  12.

   NO: GO TO 7.

7. REPLACE ACCELERATOR PEDAL ASSEMBLY 
   1. Replace accelerator pedal assembly. Refer to "REMOVAL AND INSTALLATION ".
   2. Refer to "SPECIAL REPAIR REQUIREMENT ".

      : INSPECTION END

8. CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT 
   1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

      CKP sensor (POS)		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      F30	2	F13	60	Existed

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

      Is the inspection result normal? 

      YES: GO TO 9.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

9. CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
   1. Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.

      CKP sensor (POS)		ECM		Continuity
      Connector	Terminal	Connector	Terminal
      F30	3	F13	65	Existed

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

      Is the inspection result normal? 

      YES: GO TO 10.

      NO: Repair open circuit, short to ground or short to power in harness or connectors.

10. CHECK CRANKSHAFT POSITION SENSOR (POS) 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 11.

    NO: Replace crankshaft position sensor (POS). Refer to "REMOVAL AND INSTALLATION (UPPER OIL PAN) ".

11. CHECK GEAR TOOTH 

    Visually check for chipping drive plate gear tooth.

    Is the inspection result normal? 

    YES: GO TO 12.

    NO: Replace the drive plate. Refer to "UNIT DISASSEMBLY AND ASSEMBLY ".

12. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END