Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK STARTING SYSTEM
Turn ignition switch to START position.

Does the engine turn over?

Does the starter motor operate?

Yes or No
1. Yes: GO TO 2.
2. No: Check starting system. Refer to STARTERS .
RETIGHTEN GROUND SCREWS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws.
1. GO TO 3.
  
  Fig 1: Tightening Engine Ground Screws
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK CAMSHAFT POSITION (CMP) SENSOR (PHASE) POWER SUPPLY CIRCUIT
1. Disconnect camshaft position (CMP) sensor (PHASE) harness connector.
  
  Fig 2: Disconnecting Camshaft Position Sensor Harness Connector (PHASE)
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Turn ignition switch ON.
3. Check voltage between CMP sensor (PHASE) terminal 3 and ground with CONSULT-II or tester.
  Voltage: Battery voltage
  
  Fig 3: Checking Voltage Between Camshaft Position Sensor (PHASE) Terminal And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Also check harness for short to ground and short to power.
OK or NG
1. OK: GO TO 5.
2. NG: GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E110, M7
- Harness connectors M82, F102
- Harness for open or short between camshaft position sensor (PHASE) and ECM
- Harness for open or short between camshaft position sensor (PHASE) and IPDM E/R
  1. Repair open circuit or short to ground or short to power in harness or connectors.
CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between CMP sensor (PHASE) terminal 1 and engine ground.
  Continuity should exist.
3. Also check harness for short to power.
  OK or NG
  1. OK: GO TO 7.
  2. NG: GO TO 6.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F102, M82
- Harness for open or short between CMP sensor (PHASE) and engine ground
  1. Repair open circuit or short to power in harness or connectors.
CHECK CMP SENSOR (PHASE) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 33 or 14 and CMP sensor (PHASE) terminal 2. Refer to WIRING DIAGRAM .
  Continuity should exist.
3. Also check harness for short to ground or short to power.
OK or NG
1. OK: GO TO 8.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK: GO TO 9.
2. NG: Replace camshaft position sensor (PHASE).
CHECK CAMSHAFT (INTAKE)
Check the following.
- Accumulation of debris to the signal plate of camshaft rear end
- Chipping signal plate of camshaft rear end
OK or NG
1. OK: GO TO 10.
2. NG: Remove debris and clean the signal plate of camshaft rear end or replace camshaft.
  
  Fig 4: Checking Camshaft Rear End Signal Plate Chipping
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
1. INSPECTION END