Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to "GROUND INSPECTION ".

Fig 1: Checking Ground Connections
Courtesy of NISSAN NORTH AMERICA, INC.

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 (1) harness connector.
2. Turn ignition switch ON.
  
  Fig 2: Identifying Accelerator Pedal Position Sensor
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Check voltage between APP sensor terminal 2 and ground with CONSULT or tester.
Voltage: Approximately 5 V

OK or NG

OK: GO TO 5.

NG: GO TO 3.

Fig 3: Checking Voltage Between APP Sensor Terminal 2 And Ground Using Tester
Courtesy of NISSAN NORTH AMERICA, INC.

CHECK SENSOR POWER SUPPLY CIRCUITS

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

ECM terminal	Sensor terminal	Reference Wiring Diagram
48	EVAP control system pressure sensor terminal 3	"WIRING DIAGRAM "
49	Refrigerant pressure sensor terminal 1
49	Battery current sensor terminal 1
68	Power steering pressure sensor terminal 1
90	APP sensor terminal 2

OK or NG

OK: GO TO 4.

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

CHECK COMPONENTS
Check the following.
- EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ".)
- Power steering pressure sensor (Refer to "COMPONENT INSPECTION ".)
- Battery current sensor (Refer to "COMPONENT INSPECTION ".)
- Refrigerant pressure sensor. (Refer to "DIAGNOSIS PROCEDURE ".)
OK or NG

OK: GO TO 7.

NG: Replace malfunctioning components.
CHECK ACCELERATOR PEEDAL POSITION SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 7.

NG: GO TO 6.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal position assembly. Refer to REMOVAL AND INSTALLATION .
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 "INTERMITTENT INCIDENT ".

>> INSPECTION END