Diagnostic Procedure

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 NORTH AMERICA, INC.
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 NORTH AMERICA, INC.
OK or NG

OK: GO TO 2.

NG: Repair or replace ground connections.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Disconnect EVAP control system pressure sensor harness connector.
  
  Fig 3: Identifying EVAP Canister Vent Control Valve And EVAP Control System Pressure Sensor
  Courtesy of NISSAN NORTH AMERICA, INC.
2. Check sensor harness connector for water.
  Water should not exist .
OK or NG

OK: GO TO 3.

NG: Repair or replace harness connector.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT-III or tester.
  Voltage: Approximately 5V
OK or NG

OK: GO TO 10.

NG: GO TO 4.

Fig 4: Checking Voltage Between EVAP Control System Pressure Sensor Terminal 3 And Ground
Courtesy of NISSAN NORTH AMERICA, INC.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal 107. Refer to WIRING DIAGRAM .
  Continuity should exist .
OK or NG

OK: GO TO 6.

NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors T2, B44
2. Harness connectors B1, M12
3. Harness for open between ECM and EVAP control system pressure sensor.
  : Repair open circuit.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR 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
64	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 1

OK or NG

OK: GO TO 7.

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

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 ".)
- Refrigerant pressure sensor (Refer to "COMPONENT INSPECTION ".)
OK or NG

OK: GO TO 8.

NG: Replace malfunctioning component.
CHECK APP SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 11.

NG: GO TO 9.
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
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 11.

NG: Replace EVAP control system pressure sensor.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

Refer to "WIRING DIAGRAM ".

: INSPECTION END