Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. 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 three ground screws on the body.
  Refer to "GROUND INSPECTION ".
  
  Fig 1: Identifying Body Ground Screws
  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 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 7 and ground with CONSULT or tester.
  Voltage: Approximately 5 V
  
  OK or NG
  
  OK: GO TO 3.
  
  NG: Repair open circuit or short to ground or short to power in harness or connectors.
  
  Fig 3: Checking Voltage Between Accelerator Pedal Position Sensor Terminal 7 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 82 and APP sensor terminal 1.
  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 4.
  
  NG: 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 ECM terminal 106 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 5.
  
  NG: 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 7.

NG: GO TO 6.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace the accelerator pedal assembly. Refer to UNIT 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 "HOW TO CHECK TERMINAL " and "INTERMITTENT INCIDENT ".

:INSPECTION END