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

DTC Code DTC Name
P0335 Crankshaft Position Sensor "A" Circuit
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 (a), (b) and (c) 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

WIRING DIAGRAM

A01E17FE10

INSPECTION PROCEDURE

Tech Tips

After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor.


  • Installation condition of the camshaft position sensor

  • Installation condition of the camshaft

  • Connection of the camshaft position sensor connector

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.

Note

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

PROCEDURE


  1. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

    A01E22YE02

    1. Disconnect the C4 sensor connector.

    2. Measure the resistance of the sensor.

      Standard resistance
      Tester Connection Condition Specified Condition
      1 - 2 Cold 1,630 to 2,740 Ω
      1 - 2 Hot 2,065 to 3,225 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).

      Tech Tips

      While cranking or idling the engine, check the waveform of the ECM connectors using an oscilloscope.

      A01E1Z2E03
      Reference
      Tester Connection Specified Condition

      E7-23 (G+) - E7-31 (G-)

      E8-27 (NE+) - E8-34 (NE-)

      		 Correct waveform is shown
      Tool Setting Condition
      5 V/DIV., 20 msec./DIV. Idling with warm engine

      Tech Tips

      The waveform varies depending on the engine speed.


    NG

    REPLACE CRANKSHAFT POSITION SENSOR

    OK

  2. CHECK WIRE HARNESS (CRANKSHAFT POSITION SENSOR - ECM)

    A01DZAAE02

    1. Disconnect the C4 sensor connector.

    2. Disconnect the E8 ECM connector.

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

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

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

  3. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

    A01DY4HE25

    1. Check the sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL SENSOR

    OK

  4. CHECK NO. 1 CRANKSHAFT POSITION SENSOR PLATE


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

      OK
      Plate's teeth do not have any cracks or deformation.

    NG

    REPLACE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

    OK

    REPLACE ECM Click here