ECD SYSTEM, Diagnostic DTC:P0335

DTC Code DTC Name
P0335 Crankshaft Position Sensor "A" Circuit

DESCRIPTION

The engine speed sensor in the engine control system contains a signal plate and a pickup coil for the NE signal. The NE signal plate has 56 teeth and is mounted in the injection or supply pump assembly.

The NE signal sensor generates 56 signals for every 2 engine revolutions. The ECM detects the engine speed and the cam lift position of the injection or supply pump assembly. The ECM uses the TDC and NE signals for injection timing control. The NE signal is also used for injection volume control.

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

    Condition 1:

  • No NE signal to ECM for 0.5 seconds or more at 680 rpm or more.


    Condition 2:

  • No NE signal to ECM for 2.0 seconds or more during cranking.

  • Open or short in engine speed sensor circuit

  • Injection or supply pump assembly

  • ECM

 Comes on DTC stored

WIRING DIAGRAM

B003RN0E01

CAUTION / NOTICE / HINT

Tech Tips

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. INSPECT ENGINE SPEED SENSOR


    1. Check the engine speed sensor installation.

    2. Inspect the engine speed sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INJECTION PUMP ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR)


    1. Disconnect the engine speed sensor connector.

    2. Disconnect the ECM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      C176-2 - C175-27 (NE+) Always Below 1 Ω
      C176-1 - C175-35 (NE-) Always Below 1 Ω
      C176-2 or C175-27 (NE+) - Body ground and other terminals Always 10 kΩ or higher
      C176-1 or C175-35 (NE-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR