ECD SYSTEM (w/o DPF), 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 No. 1 crankshaft position sensor plate and a pickup coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of 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 engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. 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 at 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 is input to ECM for 0.05 seconds or more, and conditions (a), (b) and (c) are met:

(1 trip detection logic)

(a) Engine speed is at 1,000 rpm or more

(b) STA signal is OFF

(c) 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
A01BG6QE07

Reference: Inspection using an oscilloscope.

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

ECM Terminal Name

(a) Between NE+ and NE-

(b) Between G+ and G-
Tester Range 5 V/DIV, 20 msec/DIV
Condition Idling with warm engine

Tech Tips


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

  • The waveform varies depending on the engine speed.

WIRING DIAGRAM

A01BCL6E09

INSPECTION PROCEDURE

Note

After replacing the ECM, 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 an intelligent tester. Freeze frame data record 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, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

PROCEDURE


  1. INSPECT CRANKSHAFT POSITION SENSOR


    1. A01BI20E17

      Disconnect the D17 crankshaft position sensor connector.

    2. Measure the crankshaft position sensor resistance.

      Standard resistance
      Tester Connection Specified Condition
      1 - 2

      1,850 to 2,450 Ω

      at 20°C (68°F)

    3. Reconnect the crankshaft position sensor connector.


    NG

    REPLACE CRANKSHAFT POSITION SENSOR

    OK

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


    1. A01BDKME11

      Disconnect the D17 crankshaft position sensor connector.

    2. Disconnect the D1 ECM connector.

    3. Check the resistance.

      Standard resistance (Check for open)
      Tester Connection Specified Condition
      D17-1 - NE+ (D1-27) Below 1 Ω
      D17-2 - NE- (D1-34) Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Specified Condition
      D17-1 or NE+ (D1-27) - Body ground 10 kΩ or higher
      D17-2 or NE- (D1-34) - Body ground 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the crankshaft position sensor connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)


    1. A01BD14E30

      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 No. 1 crankshaft position sensor 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