SFI SYSTEM, Diagnostic DTC:P0341, P0342, P0343

DTC Code DTC Name
P0341 Camshaft Position Sensor "A" Circuit Range / Performance (Bank 1 or Single Sensor)
P0342 Camshaft Position Sensor Circuit Low Input
P0343 Camshaft Position Sensor Circuit High Input

DESCRIPTION

The camshaft position sensor (G signal) consists of a magnet and MRE (Magnet Resistance Element). The intake camshaft has a timing rotor for the camshaft position sensor. When the camshaft rotates, changes occur in the air gaps between the timing rotor and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The camshaft position sensor converts the 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. DTC Detection Condition Trouble Area
P0341 Teeth of camshaft timing rotor or camshaft position cannot be detected correctly for 5 crankshaft revolutions (1 trip detection logic).

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • Camshaft

  • ECM
P0342 Camshaft position sensor output stays low (1 trip detection logic).

  • Short in camshaft position sensor circuit

  • Camshaft position sensor

  • Camshaft

  • ECM
P0343 Camshaft position sensor output stays high (1 trip detection logic).

  • Open in camshaft position sensor circuit

  • Short in power source circuit

  • Camshaft position sensor

  • Camshaft

  • ECM

Tech Tips

These DTCs are detected when the engine is running or the engine cranks 100 revolutions or more.

WIRING DIAGRAM

Refer to DTC DTC P0335 Click here.

CAUTION / NOTICE / HINT

Note

Perform idle learning after replacing the ECM Click here.

Tech Tips

Read freeze frame data using the GTS. 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.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (POWER SOURCE OF CAMSHAFT POSITION SENSOR)


    1. A01VIITE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Camshaft Position Sensor)

      Disconnect the camshaft position sensor 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 Switch Condition Specified Condition
      B90-3 (VG) - Body ground Ignition switch ON 4.5 to 5.5 V

    NG

    CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM)


    1. Disconnect the B90 camshaft position sensor connector.

    2. Disconnect the B97 ECM connector (for LHD).

    3. Disconnect the B101 ECM connector (for RHD).

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B90-2 (G1) - B97-82 (G1) Always Below 1 Ω
      B90-1 (G-) - B97-114 (G-) Always Below 1 Ω
      B90-3 (VG) - B97-113 (VCG1) Always Below 1 Ω
      B90-2 (G1) or B97-82 (G1) - Body ground Always 10 kΩ or higher
      B90-1 (G-) or B97-114 (G-) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B90-2 (G1) - B101-82 (G1) Always Below 1 Ω
      B90-1 (G-) - B101-114 (G-) Always Below 1 Ω
      B90-3 (VG) - B101-113 (VCG1) Always Below 1 Ω
      B90-2 (G1) or B101-82 (G1) - Body ground Always 10 kΩ or higher
      B90-1 (G-) or B101-114 (G-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT CAMSHAFT POSITION SENSOR (SENSOR INSTALLATION)


    1. Check the sensor installation.

      OK
      The sensor is installed correctly.

    NG

    SECURELY REINSTALL SENSOR Click here

    OK

  4. INSPECT CAMSHAFT


    1. Check the teeth of the camshaft.

      OK
      The teeth do not have any cracks or deformation.

    NG

    REPLACE CAMSHAFT Click here

    OK

  5. REPLACE CAMSHAFT POSITION SENSOR


    1. Replace the camshaft position sensor Click here.


    NEXT

  6. CHECK WHETHER DTC OUTPUT RECURS (DTC P0341, P0342 OR P0343)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear DTCs Click here.

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

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

    8. Start the engine.

    9. Stop the engine and wait for at least 10 seconds.

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

    11. Read the pending DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0341, P0342 or P0343 is output B

    A

    END

    B

    REPLACE ECM Click here

  7. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM)


    1. Disconnect the B90 camshaft position sensor connector.

    2. Disconnect the B97 ECM connector (for LHD).

    3. Disconnect the B101 ECM connector (for RHD).

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      B90-3 (VG) - B97-113 (VCG1) Always Below 1 Ω
      B90-3 (VG) or B97-113 (VCG1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B90-3 (VG) - B101-113 (VCG1) Always Below 1 Ω
      B90-3 (VG) or B101-113 (VCG1) - Body ground Always 10 kΩ or higher

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR