LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Engine Controls Self-Diagnostics - Pathfinder) >> Diagnostic Tests >> DTC P1130: Swirl Control Valve Control Solenoid Valve >> Diagnostic Procedure "B"

Diagnostic Procedure "B"

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine and allow to idle. Check intake air system for leaks. If no problem is found and CONSULT-II is available, go to next step. If no problem is found and CONSULT-II is not available, go to step  3. If problem is found repair as necessary. After repair, repeat DTC CONFIRMATION TEST "B" .
  2. Turn ignition on. Select SWIRL CONT SOL VALVE in ACTIVE TEST mode with CONSULT-II. Touch ON and OFF on CONSULT-II screen. Listen for clicking sound from Swirl Control Valve (SCV) control solenoid valve. If valve does not click, go to next step. If valve clicks, go to step  6.
  3. Turn ignition off. Disconnect SCV control solenoid valve 2-pin harness connector. See Figure. Turn ignition on. Measure voltage between ground and SCV control solenoid valve harness connector terminal No. 1 (Red wire). If battery voltage does not exist, go to next step. If battery voltage exists, go to step  5.
  4. Check following:
    • Check for poor, loose, corroded or damaged terminal connections in in-line harness connectors F22 and M33. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
    • Check for poor, loose, corroded or damaged terminal connections in fuse block harness connector M1 and E1.
    • Check for open or short in circuits between SCV control valve solenoid and ECM relay.
    If problem is found, repair as necessary. After repair, repeat DTC CONFIRMATION TEST "B" .
  5. Turn ignition off. Disconnect ECM 116-pin harness connector. For ECM location, see Figure. Check continuity of Green wire between SCV control solenoid valve harness connector terminal No. 2 and ECM harness connector terminal No. 27. See Figure. Continuity should exist. Also, check circuit for short to ground and short to voltage. If not problem is found, go to next step. If problem is found, repair as necessary. After repair, repeat DTC CONFIRMATION TEST "B" .
  6. Check vacuum hoses between intake manifold, SCV control solenoid valve and SCV actuator for leak, blockage or misrouting. See VACUUM DIAGRAMS article. If no problem is found and CONSULT-II is available, go to next step. If no problem is found and CONSULT-II is not available, go to step  8. If problem is found, repair as necessary. After repair, repeat DTC CONFIRMATION TEST "B" .
  7. Connect any disconnected harness connectors. Start engine and allow to idle. Disconnect vacuum hose from SCV control solenoid valve. Select SWIRL CONT SOL VALVE in ACTIVE TEST mode with CONSULT-II. Touch ON and OFF on CONSULT-II screen. When SWIRL CONT SOL/V is ON vacuum should exist. When SWIRL CONT SOL/V is OFF vacuum should not exist. Swirl control valve on to off operation should take less than one second. If SCV valve operates as specified, go to step  9. If SCV valve does not operate as specified, replace intake manifold collector. After repair, repeat DTC CONFIRMATION TEST "B" .
  8. Connect any disconnected harness connectors. Remove vacuum hose between SCV control solenoid valve and SCV control valve actuator. Start engine and let it idle. Using fused jumper wires, apply battery voltage between SCV control solenoid valve terminals. Vacuum should flow through SCV solenoid. Remove jumper wires. Vacuum should not flow. SCV control valve should switch in less than one second. If operation is as specified, go to step  10. If operation is not as specified, replace intake manifold collector. After repair, repeat DTC CONFIRMATION TEST "B" .
  9. Reconnect vacuum hose between SCV control solenoid valve and SCV actuator. Start engine and allow to idle. Select SWIRL CONT SOL/V in ACTIVE TEST mode on CONSULT-II. Touch ON and OFF on CONSULT-II screen, while observing SCV actuator rod move as commanded. See Fig 1. If SCV actuator rod move when commanded, go to step  11. If SCV actuator rod does not move when commanded, replace SCV control valve and actuator. After repair, repeat DTC CONFIRMATION TEST "B" .
  10. Reconnect vacuum hose between SCV control solenoid valve and SCV actuator. With engine idling, reconnect jumper wires to SCV solenoid terminals. SCV actuator rod should move when SCV solenoid is energized. If operation is as specified, go to next step. If operation is not as specified, replace SCV and actuator. After repair, repeat DTC CONFIRMATION TEST "B" .
    11. CAUTION: DO NOT use ECM ground terminals when measuring voltage.
  11. Turn ignition off. Disconnect vacuum hose from swirl control vacuum check switch. See Fig 2. Backprobing at ECM, measure voltage between ground and ECM terminal No. 59 (White/Black wire). See Figure. Using a hand vacuum pump, apply specified amount of vacuum to swirl control vacuum check switch. See SWIRL CONTROL VACUUM CHECK SWITCH VOLTAGE  table. If voltage is as specified, go to next step. If voltage is not as specified, replace swirl control vacuum check switch. After repair, repeat DTC CONFIRMATION TEST "B" .
    SWIRL CONTROL VACUUM CHECK SWITCH VOLTAGE

    Vacuum - in. Hg (kPa) Volts
    More than -5.91 (-20.0) Engine Ground
    -5.91 to -6.77 (-20.0 to -23.0) Engine Ground Or About 4.8 Volts
    Less Than -6.77 (-23.0) About 4.8 Volts
  12. Reconnect all harness connectors and vacuum hoses. Start engine and warm to normal operating temperature. Backprobing at ECM, measure voltage between ground and ECM terminal No. 51 (Orange wire) MAF sensor signal, with engine at specified speeds. See MASS AIRFLOW SENSOR VOLTAGE  table. If voltage is as specified and CONSULT-II is available, go to next step. If voltage is as specified and CONSULT-II is not available, go to step  15. If voltage is not as specified, replace MAF sensor. After repair, repeat DTC CONFIRMATION TEST "B" .
    MASS AIRFLOW SENSOR VOLTAGE

    Condition Volts
    Key On, Engine Off About 1.0
    Engine Idling 1.2-1.8
    2500 RPM 1.6-2.2
    Idle To 4000 RPM (1) 1.2-1.8 To About 4.0
    (1) Voltage should increase in proportion to engine speed.
  13. Reconnect all disconnected harness connectors. Turn ignition on. Check voltage between ground and ECM terminal No. 106. See APP SENSOR VOLTAGE  table. If voltage is as specified, go to next step. If voltage is not as specified, replace APP sensor. See REMOVAL & INSTALLATION - PATHFINDER article. Perform appropriate procedures under PROGRAMMING .
    APP SENSOR VOLTAGE

    Terminal No. Accelerator Pedal Voltage
    98 (Accelerator Pedal Position Sensor 2)
    ..... Fully Released 0.15-0.60
    ..... Fully Depressed 1.95-2.40
    106 (Accelerator Pedal Position Sensor 1)
    ..... Fully Released 0.5-1.0
    ..... Fully Depressed 3.9-4.7
  14. Start engine and warm to normal operating temperature. Turn ignition off, and then on. Select DATA MONITOR mode and observe THRTL POS SEN specified conditions. See THROTTLE POSITION SENSOR VOLTAGE (USING CONSULT-II)  table. Voltage measurement must be made with TP sensor installed. If TP sensor voltage is as specified, go to step  16. If TP sensor voltage is not as specified, replace TP sensor.
    THROTTLE POSITION SENSOR VOLTAGE (USING CONSULT-II)

    Throttle Position THRTL POS SEN Parameter
    Fully Closed .15-.85
    Partially Opened .15-.85 To 3.5-4.7
    Fully Opened 3.5-4.7
  15. Start engine and warm to normal operating temperature. Turn ignition off, and then on. Backprobing at ECM, measure voltage between ground and ECM terminal No. 91 (Red wire) TP sensor signal, with throttle valve in specified positions. See THROTTLE POSITION SENSOR VOLTAGE  table. If voltage is as specified, go to next step. If voltage is not as specified, replace TP sensor.
    THROTTLE POSITION SENSOR VOLTAGE

    Throttle Position Voltage
    Fully Closed .15-.85
    Partially Opened .15-.85 To 3.5-4.7
    Fully Opened 3.5-4.7
  16. Remove Crankshaft Position (CKP) sensor (REF) located under crankshaft pulley. Inspect CKP sensor (REF) for chipping. If problem is found, replace as necessary. If no problem is found, measure resistance between CKP sensor (REF) terminals. If resistance is 470-570 ohms at 68°F (20°C), go to next step. If resistance is not 470-570 ohms at 68°F (20°C), replace CKP sensor (REF). After repair, repeat DTC CONFIRMATION TEST "B" .
  17. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
Fig 1: Checking Swirl Control Valve Actuator Operation
G00030221Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Locating Swirl Control Vacuum Check Switch
G00030222Courtesy of NISSAN MOTOR CO., U.S.A.
scientia non olet · About LEMON Manuals