ECD 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 (NE signal) consists of a magnet, iron core and pickup coil.

The crankshaft angle sensor plate has 32 teeth and is installed on the injection pump drive gear. The NE signal sensor generates 32 signals of every engine revolution. The ECM detects the standard crankshaft angle based on the G signal from the camshaft position sensor, and the actual crankshaft angle and the engine speed by the NE signal.

DTC No. DTC Detection Condition Trouble Area
P0335

Either of the following conditions is met:

(a) No crankshaft position sensor signal to ECM while cranking for 4.7 seconds or more

(b) No crankshaft position sensor signal to ECM after cranking (Engine revolution 600 rpm or more)

  • Open or short in crankshaft position sensor circuit

  • Crankshaft position sensor

  • Crankshaft angle sensor plate

  • ECM
P0339

In conditions (a), (b) and (c), no crankshaft position sensor (NE) signal is input for 0.05 seconds or more.

(a) Engine revolution is 1000 rpm or more

(b) NE signal is off

(c) 3 seconds or more has lapsed after STA signal is switched from on to off

  • Open or short in crankshaft position sensor circuit

  • Crankshaft position sensor

  • Crankshaft angle sensor plate

  • ECM

WIRING DIAGRAM

A01CJARE02

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. CHECK CRANKSHAFT POSITION SENSOR


    1. A01CI68E12
      Text in Illustration
      *1

      Component with harness connected

      (ECM)
      *2 G and NE Signal Waveform
      *3 5 V/DIV.
      *4 20 ms./DIV. (Idling)

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

      Standard
      Tester Connection Specified Condition
      E22-27 (NE+) - E22-34 (NE-) Correct waveform appears as shown
      E23-23 (G+) - E23-31 (G-) Correct waveform appears as shown

    NG

    INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)


    1. A01CGNOE40
      Text in Illustration
      *1

      Component without harness connected

      (Crankshaft Position Sensor)

      Disconnect the crankshaft position sensor connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 1850 to 2450 Ω

    3. Reconnect the crankshaft position sensor connector.


    NG

    REPLACE CRANKSHAFT POSITION SENSOR Click here

    OK

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


    1. Disconnect the crankshaft position sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C3-1 - E22-27 (NE+) Always Below 1 Ω
      C3-2 - E22-34 (NE-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C3-1 or E22-27 (NE+) - Body ground Always 10 kΩ or higher
      C3-2 or E22-34 (NE-) - Body ground Always 10 kΩ or higher

    4. Reconnect the crankshaft position sensor connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

    OK

  4. CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)

    A01CIX2E40
    OK
    The crankshaft position sensor is installed properly.

    NG

    SECURELY REINSTALL CRANKSHAFT POSITION SENSOR Click here

    OK

  5. CHECK CRANKSHAFT POSITION SENSOR PLATE


    1. Check the teeth of the crankshaft angle sensor plate.


    NG

    REPLACE CRANKSHAFT POSITION SENSOR PLATE Click here

    OK

    REPLACE ECM Click here