ECD SYSTEM(w/ Urea SCR System), 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 crank angle sensor plate and Magneto-Resistive Element (MRE) type sensor. The crank angle sensor plate has 34 teeth at 10° intervals (2 teeth are missing for detecting top dead center), and is installed on the crankshaft. The crankshaft position sensor generates 34 signals per crankshaft revolution. The ECM uses the NE signal to detect the crankshaft position and engine speed.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0335 Crankshaft Position Sensor "A" Circuit

Either of the following conditions is met (1 trip detection logic):


  • No crankshaft position sensor signal to the ECM while cranking.

  • No crankshaft position sensor signal to the ECM while engine running.

Tech Tips

When the engine is stopped and started automatically due to stop and start system control, the crankshaft position sensor does not monitor during the automatic cranking.

  • Crankshaft position sensor

  • Crankshaft (crank angle sensor plate)

  • ECM

 Comes on DTC stored
P0339 Crankshaft Position Sensor "A" Circuit Intermittent

Under conditions (a), (b) and (c), no crankshaft position sensor signal is sent to the ECM for 0.05 seconds or more (1 trip detection logic):


  • (a) Engine speed is 1000 rpm or more.

  • (b) Starter signal is off.

  • (c) 3 seconds or more have elapsed since the starter signal switched from on to off.

Tech Tips

When the engine is stopped and started automatically due to stop and start system control, the crankshaft position sensor does not monitor during the automatic cranking.

  • Crankshaft position sensor

  • Crankshaft (crank angle sensor plate)

  • ECM

 - DTC stored
Related Data List
DTC No. Data List

P0335

P0339

 Engine Speed

Tech Tips


  • If DTC P0335 and/or P0339 is stored, the following symptoms may appear:


    • Difficulty starting

    • Misfire

    • Combustion noise

    • Black smoke

    • White smoke

    • Lack of power

Reference: Inspection using an oscilloscope.

The correct waveform is as shown.

B0026RNE01
*a 2 V/DIV.
*b 20 msec./DIV.
ECM Terminal Name

Between G2+ and G2-

Between NE+ and NE-
Tester Range 2 V/DIV., 20 msec./DIV.
Condition Idling with warm engine

MONITOR DESCRIPTION

If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this as a malfunction of the sensor.

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P0335 Crank or start engine
P0339 Engine running at 1000 rpm or higher with vehicle stationary

WIRING DIAGRAM

B00264RE04
*a Crankshaft Position Sensor

CAUTION / NOTICE / HINT

Note

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

Tech Tips


  • If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.

  • The engine speed can be checked by using the GTS. To perform the check, follow the procedures below:


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Primary / Engine Speed.


    • The engine speed may be indicated as zero despite the engine running normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.

  • 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 ENGINE CRANKING CONDITION


    1. Check the engine cranking condition.

      Result
      Result Proceed to
      Cranking is OK. A
      Does not crank at all.* B

      Tech Tips

      *: When the engine cannot crank, there may be a malfunction in the starter assembly.


    B

    GO TO PROBLEM SYMPTOMS TABLE (ENGINE DOES NOT CRANK (DOES NOT START)) Click here

    A

  2. READ VALUE USING GTS (ENGINE SPEED)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Primary / Engine Speed.

    5. Start the engine.

    6. Read the values displayed on the GTS while the engine is running.


      Powertrain > Engine > Data List
      Tester Display
      Engine Speed
      Standard
      Correct values are displayed.

      Tech Tips


      • To check the engine speed change, display the graph on the GTS.

      • If the engine does not start, check the engine speed while cranking.

      • If the engine speed indicated on the GTS remains at zero (0), there may be an open or short in the crankshaft position sensor circuit.

      Result
      Proceed to
      OK
      NG

    NG

    INSPECT ECM (CRANKSHAFT POSITION SENSOR) Click here

    OK

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 AND/OR P0339)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the ignition switch off and wait for at least 30 seconds.

    6. Start the engine and run it at 1000 rpm or higher for 5 seconds or more.

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

    8. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC P0335 and/or P0339 is output B

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

  4. INSPECT ECM (CRANKSHAFT POSITION SENSOR)


    1. Inspect the ECM using an oscilloscope.


      1. While the engine is idling, check the waveform between the terminals of the ECM connector.

        B00266UC02
        *a

        Component with harness connected

        (ECM)

        		 - -
        OK
        Tester Connection Tester Range Condition Specified Condition
        C60-28 (NE+) - C60-19 (NE-)

        2 V/DIV.

        50 msec./DIV.

        		 Cranking to idling Correct waveform as shown in illustration
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

  5. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)


    1. B0027O2C05
      *a Clearance

      Check the crankshaft position sensor installation condition.

      OK
      Crankshaft position sensor is installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    SECURELY REINSTALL CRANKSHAFT POSITION SENSOR Click here

    OK

  6. INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)


    1. Inspect the teeth of the crank angle sensor plate.

      OK
      Crank angle sensor plate does not have any cranks or deformation.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CRANKSHAFT Click here

    OK

  7. REPLACE CRANKSHAFT POSITION SENSOR


    1. Replace the crankshaft position sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the ignition switch off for 30 seconds or more.

    6. Start the engine and run it at 1000 rpm or higher for 5 seconds or more.

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

    8. Confirm that the DTC is not output.


      Powertrain > Engine > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    END

  9. REPLACE CRANKSHAFT


    1. Replace the crankshaft.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 8 Click here

  10. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR


    1. Securely reinstall the crankshaft position sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 8 Click here

  11. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 8 Click here