СИСТЕМА SFI, Diagnostic DTC:P0365, P0367, P0368, P0390, P0392, P0393

DTC Code DTC Name
P0365 Camshaft Position Sensor "B" Circuit (Bank 1)
P0367 Camshaft Position Sensor "B" Circuit Low Input (Bank 1)
P0368 Camshaft Position Sensor "B" Circuit High Input (Bank 1)
P0390 Camshaft Position Sensor "B" Circuit (Bank 2)
P0392 Camshaft Position Sensor "B" Circuit Low Input (Bank 2)
P0393 Camshaft Position Sensor "B" Circuit High Input (Bank 2)

DESCRIPTION

The VVT sensor system consists of a timing rotor (installed on each camshaft) and Magnetic Resistance Element (MRE) type VVT sensor. The timing rotor (camshaft) has 3 protrusions. When it rotates, the magnetic vector (direction of magnetic field) applied to the VVT sensor's MRE varies, which causes its resistance to vary. This varying resistance is converted to voltage, and then modified into a rectangular waveform with Hi (approximately 4 V) and Lo (approximately 1 V) outputs. As a result, the actual camshaft's position is detected and the position is output to the ECM.

DTC No. DTC Detection Condition Trouble Area

P0365

P0390

No VVT sensor for exhaust side (bank 1, 2) signal sent to ECM at engine speed of 600 rpm or more

(1 trip detection logic)

  • Open or short in VVT sensor for exhaust camshaft circuit

  • VVT sensor for exhaust camshaft

  • Exhaust camshaft

  • ECM

P0367

P0392

Output voltage of VVT sensor for exhaust side 0.3 V or less for 4 seconds

(1 trip detection logic)

  • Open or short in VVT sensor for exhaust camshaft circuit

  • VVT sensor for exhaust camshaft

  • Exhaust camshaft

  • ECM

P0368

P0393

Output voltage of VVT sensor for exhaust side 4.7 V or more for 4 seconds

(1 trip detection logic)

  • Open or short in VVT sensor for exhaust camshaft circuit

  • VVT sensor for exhaust camshaft

  • Exhaust camshaft

  • ECM
A01GNRGE02

Reference: Inspection using an oscilloscope

Tech Tips


  • The correct waveform is as shown.

  • EV1+ and EV2+ stand for the VVT sensor signal, and NE+ stands for the CKP sensor signal.

    Item Content
    Terminal

    NE+ - NE-

    EV1+ - EV1-

    EV2+ - EV2-
    Equipment Setting 5 V/DIV., 20 msec./DIV.
    Condition Cranking or idling

MONITOR DESCRIPTION

If no signal is transmitted by the VVT sensor despite the engine running, the ECM interprets this as a malfunction of the sensor.

When the sensor output voltage remains less than 0.3 V, or more than 4.7 V for more than 5 seconds, the ECM sets a DTC.

WIRING DIAGRAM

A01GN0ME04

INSPECTION PROCEDURE

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ECM TERMINAL VOLTAGE

    A01GKJ6E02

    1. Inspect the ECM using an oscilloscope.


      1. While the engine is idling, check the waveform between the terminals of the ECM connector.

        Standard voltage
        Tester Connection Condition Specified Condition
        E1-26 (EV1+) - E1-33 (EV1-) Engine idling Correct waveform appears as shown
        E3-22 (EV2+) - E3-29 (EV2-) Engine idling
        E1-27 (NE+) - E1-34 (NE-) Engine idling

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  2. CHECK VVT SENSOR (SENSOR POWER SOURCE)

    A01GNVVE37

    1. Disconnect the E32 or E40 VVT sensor connector.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      E40-3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.0 V
      E32-3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.0 V

    NG

    CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM)

    A01GIZKE02

    1. Disconnect the E32 or E40 VVT sensor connector.

    2. Disconnect the E1 or E3 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)
      Tester Connection Condition Specified Condition
      E40-1 (EX+) - E1-26 (EV1+) Always Below 1 Ω
      E40-2 (EX-) - E1-33 (EV1-) Always Below 1 Ω
      E32-1 (EX+) - E3-22 (EV2+) Always Below 1 Ω
      E32-2 (EX-) - E3-29 (EV2-) Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      E40-1 (EX+) or E1-26 (EV1+) - Body ground Always 10 kΩ or higher
      E40-2 (EX-) or E1-33 (EV1-) - Body ground Always 10 kΩ or higher
      E32-1 (EX+) or E3-22 (EV2+) - Body ground Always 10 kΩ or higher
      E32-2 (EX-) or E3-29 (EV2-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK SENSOR INSTALLATION (VVT SENSOR FOR EXHAUST CAMSHAFT)

    A01GLP0E17

    1. Check the VVT sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL SENSOR Click here

    OK

  5. CHECK EXHAUST CAMSHAFT


    1. Check the teeth of the exhaust camshaft.

      OK
      Exhaust camshaft teeth do not have any cracks or deformation.

    NG

    REPLACE EXHAUST CAMSHAFT Click here

    OK

  6. REPLACE VVT SENSOR


    1. Replace the VVT sensor Click here.


    NEXT

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0365, P0367, P0368, P0390, P0392 AND/OR P0393)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester ON.

    4. Clear DTCs Click here.

    5. Start the engine.

    6. Enter the following menus: Powertrain / Engine / DTC / Pending Codes.

    7. Read DTCs.

      Result
      Display (DTC Output) Proceed to
      No output A
      P0365, P0367, P0368, P0390, P0392 and/ or P0393 B

    B

    REPLACE ECM Click here

    A

    END

  8. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM)

    A01GKQHE07

    1. Disconnect the E32 or E40 VVT sensor for exhaust side connector.

    2. Disconnect the E1 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)
      Tester Connection Condition Specified Condition
      E40-3 (VC2) - E1-18 (VC) Always Below 1 Ω
      E32-3 (VC2) - E1-18 (VC) Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      E40-3 (VC2) or E1-18 (VC) - Body ground Always 10 kΩ or higher
      E32-3 (VC2) or E1-18 (VC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM Click here