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

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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)
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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

When one of following conditions is met:


  • Input voltage to ECM remains 0.3 V or less, or 4.7 V or higher for more than 4 seconds, when 2 or more seconds have elapsed after turning power switch on (IG)

    (1 trip detection logic)

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

    (2 trip detection logic)

  • No VVT sensor for exhaust side (bank 1, 2) signal to ECM during cranking

    (1 trip detection logic)

  • Open or short in VVT sensor (for exhaust side of Bank 1, 2) circuit

  • VVT sensor (for exhaust side of Bank 1, 2)

  • Exhaust camshaft (for Bank 1, 2)

  • ECM

P0367

P0392

Output voltage of VVT sensor (for exhaust side of bank 1, 2) 0.3 V or less for 4 seconds

(1 trip detection logic)

  • Open or short in VVT sensor (for exhaust side of Bank 1, 2) circuit

  • VVT sensor (for exhaust side of Bank 1, 2)

  • Exhaust camshaft (for Bank 1, 2)

  • ECM

P0368

P0393

Output voltage of VVT sensor (for exhaust side of bank 1, 2) 4.7 V or more for 4 seconds

(1 trip detection logic)

  • Open or short in VVT sensor (for exhaust side of Bank 1, 2) circuit

  • VVT sensor (for exhaust side of Bank 1, 2)

  • Exhaust camshaft (for Bank 1, 2)

  • ECM

Reference: Inspection using an oscilloscope

Tip:

  • The correct waveform is as shown.

  • EV1+ and EV2+ stand for the VVT sensor (for exhaust side) 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
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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.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Tip:

  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition 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.

  • When viewed from the rear of the engine assembly, Bank 1 is on the left side and Bank 2 is on the right side.

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PROCEDURE


  1. Click here

    CHECK ECM TERMINAL VOLTAGE


    1. A01GZO5E01

      Inspect the ECM using an oscilloscope.


      1. Turn the power switch on (READY).

      2. 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 Correct waveform appears as shown
        E1-27 (NE+) - E1-34 (NE-) Engine idling Correct waveform appears as shown

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    INSPECT VVT SENSOR (SENSOR POWER SOURCE)


    1. Disconnect the E32 or E40 VVT sensor (for Exhaust Side) connector.

    2. 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 Power switch on (IG) 4.5 to 5.0 V
      E32-3 (VC2) - Body ground Power switch on (IG) 4.5 to 5.0 V

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    CHECK HARNESS AND CONNECTOR (VVT SENSOR (for Exhaust Side) - ECM)


    1. Disconnect the E32 or E40 VVT sensor (for Exhaust Side) 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

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    CHECK SENSOR INSTALLATION


    1. Check the VVT sensor (for Exhaust Side of Bank 1 or Bank 2) installation.

      OK
      Sensor is installed correctly.

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    CHECK EXHAUST CAMSHAFT (for Bank 1 or Bank 2)


    1. Check the teeth of the signal plate.

      OK
      Signal plate teeth do not have any cracks or deformation.

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    REPLACE VVT SENSOR (for Exhaust Side of Bank 1 or Bank 2)


    1. Replace the VVT sensor (for Exhaust Side of Bank 1 or Bank 2) (see pageClick here).


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    CHECK WHETHER DTC OUTPUT RECURS


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester ON.

    4. Clear DTCs (see pageClick here).

    5. Put the engine in inspection mode (Click here).

    6. Enter the following menus: Powertrain / Engine and ECT / DTC.

    7. Read the DTCs.

      Table 1. Result
      Display (DTC Output) Proceed to
      No output A
      P0365, P0367, P0368, P0390, P0392 and/or P0393 B
      Tip:

      If the engine does not start, replace the ECM.


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    CHECK HARNESS AND CONNECTOR (VVT SENSOR (for Exhaust Side) - ECM)


    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

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    SECURELY REINSTALL SENSORClick here

  11. Click here

    REPLACE EXHAUST CAMSHAFT (for Bank 1 or Bank 2)Click here

  12. Click here

    REPLACE ECMClick here

  13. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE ECMClick here

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    END

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    REPLACE ECMClick here