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 crank angle sensor plate (crankshaft) and a pickup coil. 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. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the fuel injection and ignition timing are controlled.

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

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


  • No crankshaft position sensor signal to ECM while cranking.

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

  • Missing crankshaft position sensor signal despite VVT sensor signal inputs normal after engine cranked.


  • Open or short in crankshaft position sensor circuit

  • 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 to ECM for 0.05 seconds or more (1 trip detection logic):

(a) Engine speed 1000 rpm or higher.

(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 (crank angle sensor plate)

  • ECM

Does not come on DTC stored

MONITOR DESCRIPTION

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

MONITOR STRATEGY

Required Sensors/Components (Main) Crankshaft position sensor
Required Sensors/Components (Related) VVT sensor
Frequency of Operation Continuous

COMPONENT OPERATING RANGE

Crankshaft position sensor
  • Crankshaft position sensor output voltage fluctuates while crankshaft revolving

  • 34 crankshaft position sensor signals per crankshaft revolution

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine.

  7. Idle the engine for 20 seconds or more [A].

  8. Enter the following menus: Powertrain / Engine / Trouble Codes [B].

  9. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  11. Input the DTC: P0335 or P0339.

  12. Check the DTC judgment result.

    GTS Display Description
    NORMAL
    • DTC judgment completed

    • System normal

    ABNORMAL
    • DTC judgment completed

    • System abnormal

    INCOMPLETE
    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform steps [A] and [B] again.

WIRING DIAGRAM

B003V1ME04
*a Crankshaft Position Sensor
*b Shielded

CAUTION / NOTICE / HINT

Tech Tips


  • After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the VVT sensor.


    • Installation condition of the VVT sensor.

    • Installation condition of the camshaft.

    • Connection of the VVT sensor connector.

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

  • 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 / All Data / 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. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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. READ VALUE USING GTS (ENGINE SPEED)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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


      Powertrain > Engine > Data List
      Tester Display
      Engine Speed
    5. Start the engine.

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

      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 zero (0), there may be an open or short in the crankshaft position sensor circuit.

      Result
      Proceed to
      OK
      NG

    OK
    NG
  2. INSPECT CRANKSHAFT POSITION SENSOR


    1. Inspect the crankshaft position sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG
    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
      Tester Connection Condition Specified Condition
      F18-1 - F1-27 (NE+) Always Below 1 Ω
      F18-2 - F1-34 (NE-) Always Below 1 Ω
      F18-1 or F1-27 (NE+) - Body ground Always 10 kΩ or higher
      F18-2 or F1-34 (NE-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)


    1. B003TN7C02
      *a Clearance

      Check the crankshaft position sensor installation condition.

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

    NG
    OK
  5. INSPECT CRANKSHAFT (TEETH OF CRANK ANGLE SENSOR PLATE)


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

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

    OK
    NG