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Home >> Nissan-Datsun >> 2001 >> Sentra XE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 1.8L - Except CALIFORNIA Ca >> Diagnostic Tests >> DTC P1110: Intake Valve Timing Control >> Procedure

DTC P1110: Intake Valve Timing Control: Procedure

  1. Turn ignition off. Disconnect IVTC solenoid valve harness connector. See Fig 1. Turn ignition on. Measure voltage between ground and IVTC solenoid valve harness connector terminal No. 1 (Brown wire). If battery voltage exists, go to next step. If battery voltage does not exist, repair open or short circuit and retest system. See WIRING DIAGRAMS article.
  2. Turn ignition off. Disconnect ECM harness connector. See Figure. Check continuity of Yellow/Red wire between IVTC solenoid valve harness connector terminal No. 2 and ECM harness connector terminal No. 1. See Figure. Also check circuit for short to ground and short to voltage. Repair circuit as necessary and retest system. If circuit is okay, go to next step.
  3. Check engine oil pressure. See appropriate article in ENGINES. Oil pressure should be greater than 14 psi (1 kg/cm2 ) at 600 RPM, greater than 43 psi (3 kg/cm2 ) at 2000 RPM and greater than 57 psi (4 kg/cm2 ) at 6000 RPM. If oil pressure is as specified, go to next step. If oil pressure is not as specified, repair engine mechanical malfunction as necessary and retest system.
  4. Check air intake system for leaks. If problem does not exist, go to next step. If problem exists, repair as necessary and retest system.
  5. Check intake valve timing control position sensor. See DTC P1140: INTAKE VALVE TIMING CONTROL POSITION SENSOR . If problem does not exist, go to next step. If problem exists, repair as necessary and retest system.
  6. Remove IVTC solenoid valve. Check oil passages for blockage and metal debris. Using fused jumper wires, apply battery voltage between intake valve timing control solenoid valve terminals. With battery voltage applied, plunger should extend. If IVTC solenoid valve operates as specified, go to next step. If IVTC solenoid valve does not operate as specified, replace IVTC solenoid valve and retest system.
  7. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
Fig 1: Locating Intake Valve Timing Control Solenoid Valve
G00015009Courtesy of NISSAN MOTOR CO., U.S.A.
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