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 INTAKE VALVE TIMING CONTROL POSITION SENSOR POWER SUPPLY CIRCUIT
1. Disconnect intake valve timing control position sensor harness connector.
  
  Fig 2: Identifying Intake Valve Timing Control Position Sensor Harness Connector
  Courtesy of NISSAN NORTH AMERICA, INC.
2. Turn ignition switch ON.
3. Check voltage between intake valve timing control position sensor terminal 3 and ground with CONSULT or tester.
Voltage: Battery voltage

OK or NG

OK: GO TO 4.

NG: GO TO 3.

Fig 3: Checking Voltage Between Exhaust Valve Timing Control Position Sensor Terminal 3 And Ground Using Tester
Courtesy of NISSAN NORTH AMERICA, INC.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E2, F32
- IPDM E/R harness connector E19
- Harness for open or short between intake valve timing control position sensor and IPDM E/R
- Harness for open or short between intake valve timing control position sensor and ECM
Repair open circuit or short to ground or short to power in harness or connectors.
CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between intake valve timing control position sensor terminal 1 and ground. Refer to WIRING DIAGRAM .
  Continuity should exist .
3. Also check harness for short to power.
OK or NG

OK: GO TO 6.

NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E2, F32
- Harness for open or short between intake valve timing control position sensor and ground
Repair open circuit or short to power in harness or connectors.
CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between the following;
  ECM terminal 72 and intake valve timing control position sensor (bank 1) terminal 2 or
  
  ECM terminal 53 and intake valve timing control position sensor (bank 2) terminal 2.
  
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
3. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 7.

NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 8.

NG: Replace malfunctioning intake valve timing control position sensor. Refer to TIMING CHAIN .
CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 9.

NG: Replace crankshaft position sensor (POS). Refer to UNIT DISASSEMBLY AND ASSEMBLY .
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 10.

NG: Replace camshaft position sensor (PHASE). Refer to CAMSHAFT .
CHECK CAMSHAFT SPROCKET
Check accumulation of debris to the signal pick-up portion of the camshaft sprocket. Refer to "INSPECTION AFTER INSTALLATION ".

OK or NG

OK: GO TO 11.

NG: Remove debris and clean the signal pick-up cutout of camshaft sprocket.
CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

>> INSPECTION END