SFI SYSTEM, 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 exhaust camshaft's VVT sensor consists of a magnet and MRE (Magneto Resistive Element).

The exhaust camshaft has a timing rotor for the VVT sensor.

When the exhaust camshaft rotates, changes occur in the air gaps between the 3 teeth and MRE, which affects the magnet. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the exhaust camshaft rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.

The crank angle sensor plate has 34 teeth. The pickup coil generates 34 signals for each crankshaft revolution. Based on combination of the VVT signals and NE signal, the ECM detects the crankshaft angle. Then the ECM uses this data to control fuel injection time and injection timing. Also, based on the NE signal, the ECM detects the engine speed.

DTC No. DTC Detection Condition Trouble Area

P0365

P0390

Missing exhaust VVT sensor signal for 5 seconds at engine speed of 600 rpm or more

(1 trip detection logic)

  • Open or short in VVT sensor for exhaust side circuit

  • VVT sensor for exhaust side

  • Exhaust camshaft

  • ECM

P0367

P0392

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

(1 trip detection logic)

  • Open or short in VVT sensor for exhaust side circuit

  • VVT sensor for exhaust side

  • ECM

P0368

P0393

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

(1 trip detection logic)

  • Open or short in VVT sensor for exhaust side circuit

  • VVT sensor for exhaust side

  • ECM
A019LHWE02

Reference: Inspection using an oscilloscope

Tech Tips


  • The correct waveform is as shown in the illustration.

  • The wavelength becomes shorter as the engine speed increases.

Item Content
ECM Terminal Names Between EV1+ and VV1-, or EV2+ and VV1-
Tester Range 5 V/DIV., 20 ms./DIV.
Condition Idling with warm engine

WIRING DIAGRAM

Refer to DTC P0335 Click here.

INSPECTION PROCEDURE

Tech Tips


  • Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

  • If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.

PROCEDURE


  1. CHECK VVT SENSOR FOR EXHAUST SIDE (SENSOR POWER SOURCE)


    1. A019OS3E09
      Text in Illustration
      *1

      Front view of wire harness connector

      (to VVT Sensor for Exhaust Side)
      *2 Bank 1
      *3 Bank 2

      Disconnect the 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 Condition Specified Condition
      D39-3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.5 V
      D38-3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.5 V

    4. Reconnect the VVT sensor connector.


    NG

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

    OK

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


    1. Disconnect the VVT sensor connector.

      A019OOOE25

    2. Disconnect the 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
      D39-1 (EX+) - D1-69 (EV1+) Always Below 1 Ω
      D39-2 (EX-) - D1-89 (VV1-) Always Below 1 Ω
      D38-1 (EX+) - D1-64 (EV2+) Always Below 1 Ω
      D38-2 (EX-) - D1-89 (VV1-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D39-1 (EX+) or D1-69 (EV1+) - Body ground Always 10 kΩ or higher
      D39-2 (EX-) or D1-89 (VV1-) - Body ground Always 10 kΩ or higher
      D38-1 (EX+) or D1-64 (EV2+) - Body ground Always 10 kΩ or higher
      D38-2 (EX-) or D1-89 (VV1-) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to VVT Sensor for Exhaust Side)

      		 *2

      Front view of wire harness connector

      (to ECM)
      *3 Bank 1 *4 Bank 2

    4. Reconnect the VVT sensor connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM)

    OK

  3. CHECK SENSOR INSTALLATION (VVT SENSOR FOR EXHAUST SIDE)


    1. A019M12E25

      Check the VVT sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL VVT SENSOR FOR EXHAUST SIDE Click here

    OK

  4. CHECK EXHAUST CAMSHAFT (TIMING ROTOR)


    1. Check the timing rotor of the exhaust camshaft.

      OK
      Camshaft timing rotor does not have any cracks or deformation.

    NG

    REPLACE EXHAUST CAMSHAFT Click here

    OK

  5. REPLACE VVT SENSOR FOR EXHAUST SIDE


    1. Replace the VVT sensor for exhaust side Click here.


    NEXT

  6. 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 the DTCs Click here.

    5. Start the engine.

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

    7. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0365, P0367, P0368, P0390, P0392 and/or P0393 are output B

      Tech Tips

      If the engine does not start, replace the ECM.


    B

    REPLACE ECM Click here

    A

    END

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


    1. Disconnect the VVT sensor connector.

      A019OOOE26

    2. Disconnect the 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
      D39-3 (VC2) - D1-67 (VCV1) Always Below 1 Ω
      D38-3 (VC2) - D1-67 (VCV1) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D39-3 (VC2) or D1-67 (VCV1) - Body ground Always 10 kΩ or higher
      D38-3 (VC2) or D1-67 (VCV1) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to VVT Sensor for Exhaust Side)

      		 *2

      Front view of wire harness connector

      (to ECM)
      *3 Bank 1 *4 Bank 2

    4. Reconnect the VVT sensor connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR FOR EXHAUST SIDE - ECM)

    OK

    REPLACE ECM Click here