ECD SYSTEM, Diagnostic DTC:P0340, P0344

DTC Code DTC Name
P0340 Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor
P0344 Camshaft Position Sensor "A" Circuit Intermittent Bank 1 or Single Sensor

DESCRIPTION

The camshaft position sensor is installed on the cylinder head cover. The camshaft has a timing rotor for the camshaft position sensor. When the camshaft rotates, the tooth on the camshaft passes through the camshaft position sensor. The generated voltage in the sensor acts as a signal. The ECM locates each cylinder position based on the combination of this signal and crankshaft position sensor output.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0340 Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor

No camshaft position sensor signal to ECM.

(3 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • Camshaft

  • ECM

 Does not come on DTC stored
P0344 Camshaft Position Sensor "A" Circuit Intermittent Bank 1 or Single Sensor

Wrong pattern of signal from sensor is detected.

(3 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • Camshaft

  • ECM

 Does not come on DTC stored

WIRING DIAGRAM

A01LY8QE03

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 HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM)


    1. Disconnect the camshaft position 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
      B223-1 (G1) - B220-68 (G+) Always Below 1 Ω
      B223-2 (G-) - B220-115 (G-) Always Below 1 Ω
      B223-1 (G1) or B220-68 (G+) - Body ground Always 10 kΩ or higher
      B223-2 (G-) or B220-115 (G-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (CAMSHAFT POSITION SENSOR - EFI MAIN RELAY OR ECM POWER SOURCE CIRCUIT) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A01M1WYC15
    *a

    Front view of wire harness connector

    (to Camshaft Position Sensor)

    1. 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
      B223-3 (VG) - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 10 Click here

    OK

  3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR)


    1. Check the camshaft position sensor installation.

      OK
      Sensor is installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    SECURELY REINSTALL SENSOR Click here

    OK

  4. INSPECT CAMSHAFT (TIMING ROTOR)


    1. Inspect the timing rotor of the camshaft.

      OK
      Camshaft timing rotor does not have any cracks or deformation.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CAMSHAFT Click here

    OK

  5. REPLACE CAMSHAFT POSITION SENSOR


    1. Replace camshaft position sensor.

      Click here

      Result
      Proceed to
      NEXT

    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 and turn the GTS on.

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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


      Powertrain > Engine and ECT > Trouble Codes

    8. Read the DTCs.

      Result
      Result Proceed to
      No DTC output A
      DTC P0340 and/or P0344 B

    A

    END

    B

  7. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  8. REPLACE CAMSHAFT


    1. Replace the camshaft.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  9. SECURELY REINSTALL SENSOR


    1. Securely reinstall camshaft position sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  10. REPAIR OR REPLACE HARNESS OR CONNECTOR (CAMSHAFT POSITION SENSOR - EFI MAIN RELAY OR ECM POWER SOURCE CIRCUIT)


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT

    NEXT

  11. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

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

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

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


      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

      Result
      Proceed to
      NEXT

    NEXT

    END