ECD SYSTEM (w/ EGR Cooler), Diagnostic DTC:P0335, P0339

DTC Code DTC Name
P0335 Crankshaft Position Sensor "A" Circuit Malfunction
P0339 Crankshaft Position Sensor "A" Circuit Intermittent

DESCRIPTION

The crankshaft position sensor system consists of a crankshaft position sensor plate and pickup coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of wound copper wire, an iron core and magnet. The sensor plate rotates, and a pulse signal is created as each tooth passes by the pickup coil. The pickup coil generates 34 signals for each revolution. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the common rail injection system is controlled.

DTC No. DTC Detection Condition Trouble Area
P0335

When either condition below is met:


  • No crankshaft position sensor signal to ECM while cranking (1 trip detection logic)

  • No crankshaft position sensor signal to ECM with engine speed 600 rpm or more (1 trip detection logic)

  • Open or short in crankshaft position sensor circuit

  • Crankshaft position sensor

  • No. 1 crankshaft position sensor plate

  • ECM
P0339

No crankshaft position sensor signal to ECM is input for 0.05 seconds or more, and conditions 1, 2 and 3 are met

(1 trip detection logic):


  1. Engine is at 1,000 rpm or more

  2. STA signal is OFF

  3. 3 seconds or more have elapsed after STA signal is switched from ON to OFF

  • Open or short in crankshaft position sensor circuit

  • Crankshaft position sensor

  • No. 1 crankshaft position sensor plate

  • ECM

Reference: Inspection using the oscilloscope.

While idling, the correct waveform is shown in the diagram.

A01E27AE04

Tech Tips

G stands for the camshaft position sensor signal, and NE stands for the crankshaft position sensor signal.

Item Content
Terminal (a) NE+ - NE-
Tester Range 5V/DIV., 20 msec./DIV.
Condition Cranking or idling

WIRING DIAGRAM

A01DVGQE02

INSPECTION PROCEDURE

Note

If the ECM is replaced, the new ECM needs registration Click here and initialization Click here.

Tech Tips


  • If no trouble is found in the diagnostic troubleshooting procedure of DTC P0335, troubleshoot the engine mechanical system.

  • 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.

PROCEDURE


  1. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

    A01E22YE16

    1. Disconnect the C4 sensor connector.

    2. Measure the resistance of the sensor.

      Standard resistance
      Tester Connection Condition Specified Condition
      1 - 2 Approx. 20°C (68°F) 1,850 to 2,450 Ω

    NG

    REPLACE CRANKSHAFT POSITION SENSOR

    OK

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

    A01DZAAE16

    1. Disconnect the C4 sensor connector.

    2. Disconnect the E8 ECM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      C4-1 (NE+) - E8-27 (NE+) Below 1 Ω
      C4-2 (NE-) - E8-34 (NE-) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      C4-1 (NE+) or E8-27 (NE+) - Body ground 10 kΩ or higher
      C4-2 (NE-) or E8-34 (NE-) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK CRANKSHAFT POSITION SENSOR (INSTALLATION)

    A01DY4HE25

    1. Check the sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL CRANKSHAFT POSITION SENSOR

    OK

  4. CHECK NO. 1 CRANKSHAFT POSITION SENSOR PLATE


    1. Check the teeth of the crankshaft position sensor No. 1 plate.

      OK
      The sensor plate's teeth do not have any cracks or deformation.

    NG

    REPLACE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

    OK

    REPLACE ECM