SFI 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 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 a magnet.

The sensor plate rotates and, as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 34 signals per engine speed. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the fuel injection timing and ignition timing are controlled.

DTC No. DTC Detection Condition Trouble Area
P0335

Either condition 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 of 600 rpm or more (1 trip detection logic)

  • Open or short in crankshaft position sensor circuit

  • Crankshaft position sensor

  • Crankshaft position sensor plate

  • ECM
P0339

Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0.05 seconds or more

(1 trip detection logic):

(a) Engine speed 1000 rpm or more

(b) Starter signal off

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

  • Open or short in crankshaft position sensor circuit

  • Crankshaft position sensor

  • Crankshaft position sensor plate

  • ECM

WIRING DIAGRAM

A01CCF2E01

INSPECTION PROCEDURE

Tech Tips


  • If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.

  • Check the engine speed. The engine speed can be checked using the intelligent tester. Follow the procedure below:


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Turn the tester on.

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


    • The engine speed may be indicated as zero despite the engine rotating 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 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 running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

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

    5. Start the engine.

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

      Standard
      Correct values are displayed.

      Tech Tips


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

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

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


    NG

    INSPECT CRANKSHAFT POSITION SENSOR Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  2. INSPECT CRANKSHAFT POSITION SENSOR


    1. A01CDTNE01

      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 Cold 1630 to 2740 Ω
      1 - 2 Hot 2065 to 3225 Ω

      Note

      Terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).

    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.

      A01CCTPE01

    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
      D22-1 (NE+) - D1-110 (NE+) Always Below 1 Ω
      D22-2 (NE-) - D1-111 (NE-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D22-1 (NE+) or D1-110 (NE+) - Body ground Always 10 kΩ or higher
      D22-2 (NE-) or D1-111 (NE-) - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the crankshaft position sensor connector.


    NG

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

    OK

  4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)


    1. A01CFPDE25

      Check the crankshaft position sensor installation condition.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL CRANKSHAFT POSITION SENSOR Click here

    OK

  5. CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE)


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

      OK
      Crankshaft position sensor plate does not have any cracks or deformation.

    NG

    REPLACE CRANKSHAFT Click here

    OK

    REPLACE ECM Click here