Diagnostic Procedure

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake valve timing control solenoid valve (1) harness connector.
3. Turn ignition switch ON.
  
  Fig 1: Identifying Intake Valve Timing Control Solenoid Valve
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between intake valve timing control solenoid valve terminal 2 and ground with CONSULT-III or tester.
  Voltage: Battery voltage
OK or NG

OK: GO TO 3.

NG: GO TO 2.

Fig 2: Checking Voltage Between Intake Valve Timing Control Solenoid Valve Terminal 2 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTION PART
Check the following.
- Harness connectors E17, F10
- Harness for open or short between intake valve timing control solenoid valve and IPDM E/R
: Repair or replace harness or connectors.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 78 and intake valve timing control solenoid valve 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 INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 5.

NG: Replace intake valve timing control solenoid valve.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END