Diagnosis Procedure

CHECK GROUND CONNECTIONS
Models with VDC 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 E17 And Body Ground E43
  Courtesy of NISSAN MOTOR CO., U.S.A.
Models without VDC 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 E17 And Body Ground E43
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 2.
  
  NG: Repair or replace ground connections.
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.
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.
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.
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.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E108, M15
- Harness for open between ECM and APP sensor
  Repair open circuit.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III

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

ECM TERMINAL REFERENCE

ECM terminal	Sensor terminal	Reference Wiring Diagram
46	CKP sensor (POS) terminal 1	WIRING DIAGRAM
64	CMP sensor (PHASE) (bank 2) terminal 1	WIRING DIAGRAM
64	EVT control position sensor (bank 2) terminal 1	WIRING DIAGRAM
103	APP sensor terminal 4	WIRING DIAGRAM
107	EVAP control system pressure sensor terminal 3	WIRING DIAGRAM
111	Refrigerant pressure sensor terminal 1	WIRING DIAGRAM

OK or NG

OK: GO TO 8.

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 ").
- EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ").
- Refrigerant pressure sensor (Refer to MAGNET CLUTCH CIRCUIT ).
  OK or NG
  
  OK: GO TO 15.
  
  NG: Replace malfunctioning component.
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.
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.
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.
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.
CHECK APP SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 15.

NG: GO TO 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
CHECK INTERMITTENT INCIDENT
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

INSPECTION END