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

DTC Code DTC Name
P0340 Camshaft Position Sensor Circuit Malfunction
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 intake camshaft VVT sensors (VV1, VV2 signal) consist of a magnet and MRE (Magnetic Resistive Element).

The VVT camshaft drive gear has a sensor plate with 3 teeth on its outer circumference. When the gear 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 gear 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 engine rotation. 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
P0340

One of the following conditions is met:


  • Missing VVT sensor signal despite crankshaft position sensor inputs normal at engine speed of 600 rpm or more

    (1 trip detection logic)

  • No VVT sensor signal to ECM at engine speed of 600 rpm or more

    (1 trip detection logic)

  • No VVT sensor signal to ECM during cranking

    (2 trip detection logic)

  • Open or short in VVT sensor for intake side circuit

  • VVT sensor for intake side

  • Camshaft timing gear assembly

  • Jumped tooth of timing chain for intake camshaft

  • ECM

P0342

P0347

Output voltage of VVT sensor is less than 0.3 V for 4 seconds

(1 trip detection logic)

  • Open or short in VVT sensor for intake side circuit

  • VVT sensor for intake side

  • ECM

P0343

P0348

Output voltage of VVT sensor is more than 4.7 V for 4 seconds

(1 trip detection logic)

  • Open or short in VVT sensor for intake side circuit

  • VVT sensor for intake side

  • ECM
P0345

No VVT sensor signal to ECM at engine speed of 600 rpm or more

(1 trip detection logic)

  • Open or short in VVT sensor for intake side circuit

  • VVT sensor for intake side

  • Camshaft timing gear assembly

  • Jumped tooth of timing chain for intake camshaft

  • ECM

MONITOR DESCRIPTION

If no signal is transmitted by the VVT sensor despite the engine running, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

MONITOR STRATEGY

Required Sensors/Components (Main) VVT sensor (Bank 1 and 2)
Required Sensors/Components (Related) Crankshaft position sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

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

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

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Put the engine in inspection mode (maintenance mode) Click here.

  7. Start the engine.

  8. Idle the engine for 10 seconds or more.

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

  10. Read the DTC.

    Tech Tips


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

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

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

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

  13. 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 ABNORMAL, the system has a malfunction.

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

    • If the judgment result shows INCOMPLETE or N/A, perform steps again.

WIRING DIAGRAM

A01FR3IE01

INSPECTION PROCEDURE

Tech Tips


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

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

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

PROCEDURE


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


    1. Disconnect the VVT sensor connector.

    2. Turn the power switch on (IG).

    3. A01FREVE76
      Text in Illustration
      *1 Bank 1
      *2 Bank 2
      *a

      Front view of wire harness connector

      (to VVT Sensor for Intake Side)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F29-3 (VC) - Body ground Power switch on (IG) 4.5 to 5.5 V
      F15-3 (VC) - Body ground Power switch on (IG) 4.5 to 5.5 V

    4. Reconnect the VVT sensor connector.


    NG

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

    OK

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


    1. Disconnect the VVT sensor 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
      F29-1 (VVR+) - F5-81 (VV1+) Always Below 1 Ω
      F29-2 (VVR-) - F5-113 (VV1-) Always Below 1 Ω
      F15-1 (VVL+) - F5-78 (VV2+) Always Below 1 Ω
      F15-2 (VVL-) - F5-110 (VV2-) Always Below 1 Ω
      F29-1 (VVR+) or F5-81 (VV1+) - Body ground Always 10 kΩ or higher
      F29-2 (VVR-) or F5-113 (VV1-) - Body ground Always 10 kΩ or higher
      F15-1 (VVL+) or F5-78 (VV2+) - Body ground Always 10 kΩ or higher
      F15-2 (VVL-) or F5-110 (VV2-) - Body ground Always 10 kΩ or higher

    4. Reconnect the VVT sensor connector.

    5. Reconnect the ECM connector.


    NG

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

    OK

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


    1. A01FRPKE17

      Check the VVT sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL VVT SENSOR FOR INTAKE SIDE Click here

    OK

  4. CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF PLATE)


    1. Check the teeth of the signal 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.


    NG

    REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Click here

    OK

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


    1. A01FV11E03
      Text in Illustration
      *1 Timing Mark

      Remove the cylinder head cover sub-assemblies RH and LH.

    2. Turn the crankshaft to align the timing marks of the crankshaft.

    3. Align the notch of the crankshaft pulley to the "0" position.

    4. Check if the timing marks of the camshaft pulley and camshaft bearing cap align.

    5. Turn the crankshaft clockwise 360° if the timing marks do not align. Check if they align once again.

      OK
      The timing marks of the camshaft pulley and the camshaft bearing cap align when the notch of the crankshaft pulley is in the "0" position.

    6. Reinstall the cylinder head cover sub-assemblies RH and LH.


    NG

    ADJUST VALVE TIMING Click here

    OK

  6. REPLACE VVT SENSOR FOR INTAKE SIDE


    1. Replace the VVT sensor Click here.


    NEXT

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


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

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

    6. Turn the power switch on (IG).

    7. Turn the GTS on.

    8. Put the engine in inspection mode (maintenance mode) Click here.

    9. Start the engine.

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

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

    12. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0340, P0342, P0343, P0345, P0347 or P0348 is output B

      Tech Tips

      If the engine does not start, replace the ECM.


    B

    REPLACE ECM Click here

    A

    END

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


    1. Disconnect the VVT sensor for intake side connector.

    2. Disconnect the ECM connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F29-3 (VC) - F5-82 (VCV1) Always Below 1 Ω
      F15-3 (VC) - F5-111 (VCV2) Always Below 1 Ω
      F29-3 (VC) or F5-82 (VCV1) - Body ground Always 10 kΩ or higher
      F15-3 (VC) or F5-111 (VCV2) - Body ground Always 10 kΩ or higher

    4. Reconnect the VVT sensor for intake side connector.

    5. Reconnect the ECM connectors.


    NG

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

    OK

    REPLACE ECM Click here