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Home >> Toyota >> 2006 >> Corolla CE, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (SFI) (2ZZ-GE) - Diagnostics) >> DTC P2646, P2647: OCV For VVTL Open/Closed Malfunction (Bank 1) >> Inspection Procedure >> Hand-held tester:

Hand-held tester:

WARNING: This page is about a different variant/trim than selected.
  1. PERFORM ACTIVE TEST USING HAND-HELD TESTER (CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSY FOR VVTL) 
    1. Connect a hand-held tester to the DLC 3.
    2. Turn the ignition switch to ON and turn the tester ON.
    3. Start the engine and warm it up.
    4. On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVTL CTRL B1.
    5. Maintain the engine speed at between 1,500 rpm and 2,500 rpm.
    6. Check the engine speed when operating the OCV (Oil Control Valve) for VVTL (Variable Valve Timing and Lift) using the tester.

      OK: 

      VVTL system OFF (OCV: OFF): Normal engine speed 

      VVTL system ON (OCV: ON): Engine idles roughly or stalls 

    1. NG: Go to step   4 
    2. OK: GO TO NEXT STEP 
  2. PERFORM ACTIVE TEST USING HAND-HELD TESTER (CHECK ENGINE OIL PRESSURE SWITCH ASSY FOR VVTL) 
    1. Connect the hand-held tester to the DLC 3.
    2. Turn the ignition switch to ON and turn the tester ON.
    3. Start the engine and warm it up.
    4. On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVTL CTRL B1.
    5. Disconnect the oil pressure switch for VVTL connector.
    6. Maintain the engine speed at between 3,500 rpm and 4,000 rpm.
    7. Check the resistance between the oil pressure switch and body ground when operating the OCV using the tester.

      Standard: 

      VVTL ENGINE OIL PRESSURE SWITCH ASSY INSPECTION

      Tester Operations Specified Conditions
      VVTL CTRL B1: OFF (OCV: OFF) 10 kΩ or higher
      VVTL CTRL B1: ON (OCV: ON) Below 1 Ω
    1. NG: REPLACE ENGINE OIL PRESSURE SWITCH ASSY 
    2. OK: GO TO NEXT STEP 
  3. CHECK HARNESS AND CONNECTOR (OIL PRESSURE SWITCH FOR VVTL - ECM) 
    1. Disconnect the 02 oil pressure switch connector.
    2. Disconnect the E5 ECM connector.
    3. Check the resistance.

      Standard (Check for open): 

      OIL PRESSURE SWITCH FOR VVTL - ECM RESISTANCE (CHECK FOR OPEN)

      Tester Connections Specified Condition
      Oil pressure switch (02-1) - OSW (E5-31) Below 1 Ω

      Standard (Check for short): 

      OIL PRESSURE SWITCH FOR VVTL - ECM RESISTANCE (CHECK FOR SHORT)

      Tester Connections Specified Condition
      Oil pressure switch (02-1) or OSW (E5-31) - Body ground 10 kΩ or higher
      Fig 1: Disconnecting E5 ECM Connector
      G02599459Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the ECM connector.
    5. Reconnect the oil pressure switch connector.
      Fig 2: Identifying Terminals Of Oil Pressure Switch Connector
      G02599460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 

      REPLACE ECM (See  ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT  ) 

  4. CHECK OIL CONTROL VALVE FILTER 
    1. Remove the OCV filter.
    2. Check the OCV filter.
      1. Confirm that the filter is not contaminated.
    3. Place a new gasket on the bolt, and reinstall the filter.

      Torque: 29 N.m (300 kgf.cm, 22 ft.lbf) 

      Fig 3: Removing OCV Filter
      G02599461Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE OIL CONTROL VALVE FILTER 
    2. OK: GO TO NEXT STEP 
  5. INSPECT OPERATION OF OCV (FOR VVTL) 
    1. Start the engine.
    2. Check the engine speed twice in each of conditions (1) and (2), as described below:
      1. Disconnect the C2 camshaft timing OCV connector.
      2. Apply the positive battery voltage between the terminals of the camshaft timing OCV.

        Result: 

        OCV (FOR VVTL) INSPECTION RESULT

        Condition (1) Condition (2) Proceed To
        Normal engine speed Engine idles roughly or stalls A
        Any results other than above Any results other than above B
        Fig 4: Identifying Terminals Of C15 Camshaft Timing Oil Control Valve Connector
        G02599462Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the camshaft timing OCV connector.
    1. B: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY 
    2. A: GO TO NEXT STEP 

      CHECK FOR INTERMITTENT PROBLEMS  

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