ECD SYSTEM(w/ DPF), Diagnostic DTC:P0340, P0342, P0343, P0344

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)
P0344 Camshaft Position Sensor "A" Circuit Intermittent (Bank 1 or Single Sensor)

DESCRIPTION

The camshaft position sensor (G signal sensor) consists of a magnet and MRE (Magneto Resistance Element).

The camshaft timing gear has a crank angle sensor plate for the camshaft position sensor. When the 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 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 time and injection timing.

P0340
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Engine cranks 4 revolutions or more.

Either of following conditions is met:


  • No camshaft position sensor signal to ECM

  • Phase deviation in crankshaft and camshaft position sensor signals

(1 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • Camshaft assembly

  • ECM
P0342
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idle engine for 4 seconds.

Output voltage of camshaft position sensor is below 0.3 V for 4 seconds

(1 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • ECM
P0343
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idle engine for 4 seconds.

Output voltage of camshaft position sensor is higher than 4.7 V for 4 seconds

(1 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • ECM
P0344
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Engine cranks 6 revolutions or more.

Wrong pattern of signal from sensor is detected

(1 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • Camshaft assembly

  • Valve timing

  • ECM

WIRING DIAGRAM

Refer to DTC P0335 Click here.

CAUTION / NOTICE / HINT

Note

When replacing the ECM, the ECM needs Registration and Initialization Click here.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • 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, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (VC VOLTAGE)


    1. A01VIHXE01
      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
      B105-3 (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 B105 camshaft position sensor connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 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
      B105-1 (G1) - B104-83 (G+) Always Below 1 Ω
      B105-2 (G-) - B104-115 (G-) Always Below 1 Ω
      B105-1 (G1) or B104-83 (G+) - Body ground Always 10 kΩ or higher
      B105-2 (G-) or B104-115 (G-) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B105-1 (G1) - B103-83 (G+) Always Below 1 Ω
      B105-2 (G-) - B103-115 (G-) Always Below 1 Ω
      B105-1 (G1) or B103-83 (G+) - Body ground Always 10 kΩ or higher
      B105-2 (G-) or B103-115 (G-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR)


    1. A01VKHSE35
      Text in Illustration
      *a OK
      *b NG
      *c Clearance

      Check the camshaft position sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL SENSOR Click here

    OK

  4. CHECK CRANKSHAFT POSITION SENSOR PLATE


    1. Check the crankshaft position sensor plate.

      OK
      Sensor plate does not have any cracks or deformation.

    NG

    REPLACE CRANKSHAFT POSITION SENSOR PLATE Click here

    OK

  5. REPLACE CAMSHAFT POSITION SENSOR


    1. Replace camshaft position sensor Click here.


    NEXT

  6. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Start the engine.

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

    7. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0340 and/or P0344 is output B

    A

    END

    B

  7. ADJUST VALVE TIMING


    1. Adjust the valve timing Click here.


    NEXT

    CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344) Click here

  8. REPLACE CRANKSHAFT POSITION SENSOR PLATE


    1. Replace the camshaft assembly Click here.


    NEXT

    CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344) Click here

  9. SECURELY REINSTALL SENSOR


    1. Securely reinstall sensor Click here.


    NEXT

    CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344) Click here

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


    1. Disconnect the B105 camshaft position sensor connector.

    2. Disconnect the B104 ECM connector (for LHD).

    3. Disconnect the B103 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
      B105-3 (VG) - B104-68 (VCG) Always Below 1 Ω
      B105-3 (VG) or B104-68 (VCG) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      B105-3 (VG) - B103-68 (VCG) Always Below 1 Ω
      B105-3 (VG) or B103-68 (VCG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Start the engine.

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

    7. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0340 and/or P0344 is output B

    A

    END

    B

  12. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  13. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Start the engine.

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

    7. Confirm that the DTC is not output again.


    NEXT

    END

  14. REPAIR OR REPLACE HARNESS OR CONNECTOR


    NEXT

  15. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340 AND/OR P0344)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Start the engine.

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

    7. Read the DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0340 and/or P0344 is output B

    A

    END

    B

  16. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  17. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

    5. Start the engine.

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

    7. Confirm that the DTC is not output again.


    NEXT

    END