Diagnostic Procedure

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 .

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.

1. Disconnect camshaft position (CMP) sensor harness connector.
2. Turn ignition switch ON.
   Fig 2: Disconnecting Camshaft Position (CMP) Sensor Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between terminal 5 and ground with CONSULT-II or tester.

   Voltage : Battery voltage 

OK or NG 

1. OK: GO TO  5.
2. NG: GO TO 4.

Fig 3: Checking Voltage Between Terminal And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

Check the following.

• Harness for open or short between camshaft position sensor and ECM relay
• Harness for open or short between camshaft position sensor and ECM
  1. Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between CMP sensor terminal 4 and ECM terminal 49, CMP sensor terminal 3 and ECM terminals 44, 48.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

4. Also check harness for short to ground and short to power.

OK or NG 

1. OK: GO TO 6.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

1. Check harness continuity between CMP sensor terminal 6 and engine ground.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

2. Also check harness for short to power.

OK or NG 

1. OK: GO TO 7.
2. NG: Repair open circuit or short to power in harness or connectors.

Refer to COMPONENT INSPECTION .

OK or NG 

1. OK: GO TO 8.
2. NG: Replace camshaft position sensor.

Perform TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

1. : INSPECTION END.