ECD SYSTEM (w/ EGR Cooler Bypass Valve), Diagnostic DTC:P0340

DTC Code DTC Name
P0340 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)

DESCRIPTION

The camshaft position sensor (G signal) consists of a magnet, iron core and pickup coil.

The G signal plate has 5 teeth on its outer circumference and is installed in the pump drive shaft pulley. When the pump drive shaft pulley rotates, the protrusion on the signal plate and the air gap on the pickup coil change, causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.

The NE signal plate has 34 teeth and is mounted on the crank angle sensor plate. The NE signal sensor generates 34 signals at every engine revolution. The ECM detects the standard crankshaft angle based on the G signal and the actual crankshaft angle and the engine speed by the NE signal.

DTC No. DTC Detection Condition Trouble Area
P0340

When either condition below is met:


  • No camshaft position sensor signal to ECM while cranking

    (2 trip detection logic)

  • No camshaft position sensor signal to ECM at engine speed of 650 rpm or more

    (1 trip detection logic)

  • Open or short in camshaft position sensor circuit

  • Camshaft position sensor

  • Pump drive shaft pulley

  • ECM

WIRING DIAGRAM

Refer to DTC P0335 Click here.

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, and other data from the time the malfunction occurred.

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

PROCEDURE


  1. INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE)


    1. A01KHXDE09
      Text in Illustration
      *1 Camshaft Position Sensor
      *a Component Side

      Disconnect the C1 camshaft position sensor connector.

    2. Measure the resistance between terminals 1 and 2.

      Standard resistance
      Tester Connections Conditions Specified Conditions
      1 - 2 Cold 1630 to 2740 Ω
      1 - 2 Hot 2065 to 3225 Ω

      Note

      In the chart above, the terms "cold" and "hot" refer to the temperature of the sensor. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).

    3. Reconnect the camshaft position sensor connector.


    NG

    REPLACE CAMSHAFT POSITION SENSOR Click here

    OK

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


    1. Disconnect the C1 camshaft position sensor connector.

    2. Disconnect the E11 ECM connector.

    3. Check the resistance.

      Standard resistance (Check for open)
      Tester Connections Specified Conditions
      C1-1 - E11-13 (G+) Below 1 Ω
      C1-2 - E11-14 (G-) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connections Specified Conditions
      C1-1 or E11-13 (G+) - Body ground 10 kΩ or higher
      C1-2 or E11-14 (G-) - Body ground 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the camshaft position sensor connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR)


    1. A01KHKUE93
      Text in Illustration
      *a Clearance

      Check the camshaft position sensor installation.

      OK
      Camshaft position sensor is installed correctly

    NG

    SECURELY REINSTALL CAMSHAFT POSITION SENSOR Click here

    OK

  4. CHECK PUMP DRIVE SHAFT PULLEY


    1. Check the teeth of the pump drive shaft pulley.

      OK
      Pulley's teeth do not have any cracks or deformation

    NG

    REPLACE PUMP DRIVE SHAFT PULLEY Click here

    OK

    REPLACE ECM Click here