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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 "C"

Diagnostic Procedure "C"

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. If using CONSULT-II, go to next step. If using generic scan tool, go to step  3.
  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 step  4. If valve clicks, go to step  5.
  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/Yellow 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 F23 and M32. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
    • Check for poor, loose, corroded or damaged terminal connections in fuse block harness connector M10.
    • Check fuse block fuse No. 16 (10-amp).
    • Check for open or short in circuits between SCV control valve solenoid and fuse.
    If problem is found, repair as necessary. After repair, repeat DTC CONFIRMATION TEST "C" .
  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 "C" .
  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 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 "C" .
  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 "C" .
  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 next step. If operation is not as specified, replace intake manifold collector. After repair, repeat DTC CONFIRMATION TEST "C" .
    9. CAUTION: DO NOT use ECM ground terminals when measuring voltage.
  9. Turn ignition off. Disconnect vacuum hose from swirl control vacuum check switch. See Figure. Backprobing at ECM, measure voltage between ground and ECM terminal No. 55 (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 "C" .
    SWIRL CONTROL VACUUM CHECK SWITCH VOLTAGE

    Vacuum - in. Hg (kPa) Volts
    More than 5.91 (20.0) Engine Ground
    5.91-6.77 (20.0-23.0) Engine Ground Or About 4.8 Volts
    Less Than 6.77 (23.0) About 4.8 Volts
  10. 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 "C" .
  11. If using CONSULT-II, go to next step. If using generic scan tool, go to step  13.
    12. CAUTION: DO NOT use ECM ground terminals when measuring voltage.
  12. 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  15. If TP sensor voltage is not as specified, go to step  14.
    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
  13. 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 not as specified, go to next step. If voltage is as specified, go to step  15.
    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
  14. 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
    106 (Accelerator Pedal Position Sensor 1)
    ..... Fully Released 0.5-1.0
    ..... Fully Depressed 3.9-4.7
    98 (Accelerator Pedal Position Sensor 2)
    ..... Fully Released 0.15-0.6
    ..... Fully Depressed 1.95-2.4
  15. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
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