SFI SYSTEM, Diagnostic DTC:P0340, P0342, P0343, P0345, P0347, P0348

DTC Code DTC Name
P0340 Camshaft Position Sensor Circuit
P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor)
P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor)
P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
P0347 Camshaft Position Sensor "A" Circuit Low Input (Bank 2)
P0348 Camshaft Position Sensor "A" Circuit High Input (Bank 2)

DESCRIPTION

The VVT sensor (for intake camshaft) (VV1, VV2 signal) consists of a magnet and MRE (Magneto-Resistive Element).

The camshaft timing gear assembly has a sensor plate for the VVT sensor. When the intake camshaft rotates, changes occur in the air gaps between the sensor plate and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the intake camshaft rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.

Then the ECM uses this data to control fuel injection duration, fuel injection timing and Variable Valve Timing (VVT) system.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0340 Camshaft Position Sensor Circuit

One of the following conditions is met:


  • Missing VVT sensor (for intake camshaft) signal despite crankshaft position sensor inputs normal at engine speed of 600 rpm or higher (1 trip detection logic).

  • No VVT sensor (for intake camshaft) signal to ECM at engine speed of 600 rpm or higher (1 trip detection logic).

  • No VVT sensor (for intake camshaft) signal to ECM while cranking (2 trip detection logic).

  • Open or short in VVT sensor (for intake camshaft of bank 1) circuit

  • VVT sensor (for intake camshaft of bank 1)

  • Camshaft timing gear assembly

  • Valve timing

  • ECM

 Comes on DTC stored
P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor) The output voltage of the VVT sensor (for intake camshaft) is less than 0.3 V for 4 seconds or more (1 trip detection logic).

  • Open or short in VVT sensor (for intake camshaft of bank 1) circuit

  • VVT sensor (for intake camshaft of bank 1)

  • ECM

 Comes on DTC stored
P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor) The output voltage of the VVT sensor (for intake camshaft) is higher than 4.7 V for 4 seconds or more (1 trip detection logic).

  • Open or short in VVT sensor (for intake camshaft of bank 1) circuit

  • VVT sensor (for intake camshaft of bank 1)

  • ECM

 Comes on DTC stored
P0345 Camshaft Position Sensor "A" Circuit (Bank 2) No VVT sensor (for intake camshaft) signal at engine speed of 600 rpm or higher (1 trip detection logic).

  • Open or short in VVT sensor (for intake camshaft of bank 2) circuit

  • VVT sensor (for intake camshaft of bank 2)

  • Camshaft timing gear assembly

  • Valve timing

  • ECM

 Comes on DTC stored
P0347 Camshaft Position Sensor "A" Circuit Low Input (Bank 2) The output voltage of the VVT sensor (for intake camshaft) is less than 0.3 V for 4 seconds or more (1 trip detection logic).

  • Open or short in VVT sensor (for intake camshaft of bank 2) circuit

  • VVT sensor (for intake camshaft of bank 2)

  • ECM

 Comes on DTC stored
P0348 Camshaft Position Sensor "A" Circuit High Input (Bank 2) The output voltage of the VVT sensor (for intake camshaft) is higher than 4.7 V for 4 seconds or more (1 trip detection logic).

  • Open or short in VVT sensor (for intake camshaft of bank 2) circuit

  • VVT sensor (for intake camshaft of bank 2)

  • ECM

 Comes on DTC stored

Tech Tips

Reference: Inspection using an oscilloscope.

Click here

MONITOR DESCRIPTION

If no pulse signal is transmitted by the VVT sensor (for intake camshaft) despite the camshaft rotating, or if the rotation of the intake camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction of the sensor.

Also, when the sensor output voltage remains at less than 0.3 V, or higher than 4.7 V for 4 seconds or more, the ECM stores a DTC.

MONITOR STRATEGY

Required Sensors/Components (Main) VVT sensor
Required Sensors/Components (Related) Crankshaft position sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the ignition switch off and wait for at least 30 seconds.

  5. Turn the ignition switch to ON and turn the GTS on.

  6. Start the engine.

  7. Idle the engine for 10 seconds or more.

  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  9. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  11. Input the DTC: P0340, P0342, P0343, P0345, P0347 or P0348.

  12. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B003JWBE03
*a VVT Sensor (for Intake Camshaft of Bank 1)
*b VVT Sensor (for Intake Camshaft of Bank 2)

CAUTION / NOTICE / HINT

Tech Tips


  • If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.

  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transmission.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • Read freeze frame data using the GTS. 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.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (POWER SOURCE OF VVT SENSOR (FOR INTAKE CAMSHAFT))

    B003JV8C10
    *a

    Front view of wire harness connector

    (to VVT Sensor (for Intake Camshaft))
    *b Bank 1
    *c Bank 2

    1. Disconnect the VVT sensor (for intake camshaft) connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C107-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V
      C106-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM)


    1. Disconnect the VVT sensor (for intake camshaft) connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C107-1 (VVR+) - C85-10 (VV1+) Always Below 1 Ω
      C107-2 (VVR-) - C85-11 (VV1-) Always Below 1 Ω
      C106-1 (VVL+) - C85-4 (VV2+) Always Below 1 Ω
      C106-2 (VVL-) - C85-5 (VV2-) Always Below 1 Ω
      C107-1 (VVR+) or C85-10 (VV1+) - Body ground and other terminals Always 10 kΩ or higher
      C107-2 (VVR-) or C85-11 (VV1-) - Body ground and other terminals Always 10 kΩ or higher
      C106-1 (VVL+) or C85-4 (VV2+) - Body ground and other terminals Always 10 kΩ or higher
      C106-2 (VVL-) or C85-5 (VV2-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK SENSOR INSTALLATION (VVT SENSOR (FOR INTAKE CAMSHAFT))

    B003N5JC01
    *a Clearance

    1. Check the VVT sensor (for intake camshaft) installation.

      OK
      VVT sensor (for intake camshaft) is installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    SECURELY REINSTALL VVT SENSOR (FOR INTAKE CAMSHAFT) Click here

    OK

  4. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF SENSOR PLATE)


    1. Inspect the teeth of the sensor plate.

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

      Tech Tips

      Perform "Inspection After Repair" after replacing the camshaft timing gear assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Click here

    OK

  5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)


    1. Remove the cylinder head cover sub-assembly and cylinder head cover sub-assembly LH.

      Click here

    2. B003MIO

      Turn the crankshaft pulley, and align its groove with the "0" timing mark of the timing chain cover.

    3. B003LG7C03
      *A Bank 1
      *B Bank 2
      *a Timing Mark

      Check that the timing marks of the camshaft timing gear assemblies and camshaft timing sprockets are aligned with the timing marks of the bearing cap as shown in the illustration.

      Tech Tips

      If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

      OK
      The timing marks on the camshaft timing gear assemblies and camshaft timing sprockets are aligned as shown in the illustration.

      Tech Tips

      If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK ENGINE MECHANICAL SYSTEM Click here

    OK

  6. REPLACE VVT SENSOR (FOR INTAKE CAMSHAFT)


    1. Replace the VVT sensor (for intake camshaft).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 OR P0348)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the ignition switch off and wait for at least 30 seconds.

    6. Start the engine.

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Read the pending DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P0340, P0342, P0343, P0345, P0347 or P0348 is output A
      DTCs are not output B

      Tech Tips

      If the engine does not start, replace the ECM.


    A

    REPLACE ECM Click here

    B

    END

  8. CHECK ENGINE MECHANICAL SYSTEM


    1. Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  9. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 OR P0348)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the ignition switch off and wait for at least 30 seconds.

    6. Start the engine.

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Read the pending DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P0340, P0342, P0343, P0345, P0347 or P0348 is output A
      DTCs are not output B

      Tech Tips

      If the engine does not start, replace the ECM.


    A

    REPLACE ECM Click here

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

  10. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM)


    1. Disconnect the VVT sensor (for intake camshaft) connector.

    2. Disconnect the VVT sensor (for exhaust camshaft) connector.

    3. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C107-3 (VC) - C85-12 (VCV1) Always Below 1 Ω
      C106-3 (VC) - C85-6 (VCV2) Always Below 1 Ω
      C107-3 (VC) or C85-12 (VCV1) - Body ground and other terminals Always 10 kΩ or higher
      C106-3 (VC) or C85-6 (VCV2) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR