СИСТЕМА SFI, Diagnostic DTC:P0335, P0337, P0338, P0339

DTC Code DTC Name
P0335 Crankshaft Position Sensor "A" Circuit
P0337 Crankshaft Position Sensor "A" Circuit Low Input
P0338 Crankshaft Position Sensor "A" Circuit High Input
P0339 Crankshaft Position Sensor "A" Circuit Intermittent

DESCRIPTION

The crankshaft position sensor system consists of a crank angle sensor plate and Magnetic Resistance 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 to the rear end of the crankshaft. The crank position sensor outputs 34 rotation signals per engine revolution. The ECM uses the G2 signal to distinguish between the cylinders, and uses the NE signal to detect the crankshaft position and engine rpm.

DTC No. DTC Detection Condition Trouble Area
P0335

Either condition is met:


  • No CKP sensor signal sent to ECM while cranking (1 trip detection logic)

  • No CKP sensor signal sent to ECM at engine speed of 450 rpm or more (1 trip detection logic)

  • Open or short in CKP sensor circuit

  • CKP sensor

  • CKP sensor plate

  • ECM
P0337 Output voltage of CKP sensor 0.3 V or less for 4 seconds (1 trip detection logic)

  • Open or short in CKP sensor circuit

  • CKP sensor

  • CKP sensor plate

  • ECM
P0338 Output voltage of CKP sensor 4.7 V or more for 4 seconds (1 trip detection logic)

  • Open or short in CKP sensor circuit

  • CKP sensor

  • CKP sensor plate

  • ECM
P0339

Under conditions (a), (b) and (c), no CKP 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 lapsed since starter signal switched from ON to OFF

  • Open or short in CKP sensor circuit

  • CKP sensor

  • CKP sensor plate

  • ECM

MONITOR DESCRIPTION

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

When the sensor output voltage remains less than 0.3 V, or more than 4.7 V for more than 4 seconds, the ECM sets a DTC.

WIRING DIAGRAM

A001E1BE10
*a Crankshaft Position Sensor

CAUTION / NOTICE / HINT

Tech Tips


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

  • Check the engine speed. The engine speed can be checked by using the intelligent tester. To check, follow the operation 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 running normally. This is caused by a lack of NE signals from the crankshaft position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed, if the CKP sensor output voltage is insufficient.

  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions 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, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)


    1. Connect the intelligent tester to the DLC3.

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

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

    4. Start the engine.

    5. 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 zero (0), there may be an open or short in the Crankshaft Position (CKP) sensor circuit.


    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  2. INSPECT CRANKSHAFT POSITION SENSOR (SENSOR POWER SOURCE)

    A001EXBE02
    *1 Front view of wire harness connector: (to CKP Sensor)

    1. Disconnect the E54 crankshaft position sensor connector.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      E54--3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.0 V

    NG

    CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Click here

    OK

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

    A001DYXE02
    *1 Front view of wire harness connector: (to CKP Sensor)
    *2 ECM Connector

    1. Disconnect the E54 crankshaft position sensor connector.

    2. Disconnect the E1 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
      E54-1 (NE) - E1-27 (NE+) Always Below 1 Ω
      E54-2 (NE-) - E1-34 (NE-) Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      E54-1 (NE) or E1-27 (NE+) - Body ground Always 10 kΩ or higher
      E54-2 (NE-) or E1-34 (NE-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

    A0018WTE01
    *1 Clearance

    1. Check the crankshaft position sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL SENSOR Click here

    OK

  5. CHECK CRANKSHAFT ANGLE SENSOR ROTOR (TEETH OF SENSOR ROTOR)


    1. Check the teeth of the sensor plate.

      OK
      Sensor plate does not have any crack or deformation.

    NG

    REPLACE CRANKSHAFT ANGLE SENSOR ROTOR Click here

    OK

  6. REPLACE CRANKSHAFT POSITION SENSOR


    1. Replace the crankshaft position sensor Click here.


    NEXT

  7. CHECK WHETHER DTC OUTPUT RECURS (P0335, P0337, P0338 AND/OR P0339)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester ON.

    4. Clear DTCs Click here.

    5. Start the engine.

    6. Enter the following menus: Powertrain / Engine / DTC / Pending Codes.

    7. Read DTCs.

      Result
      Display (DTC Output) Proceed to
      No output A
      P0335, P0337, P0338 and/or P0339 B

    A

    END

    B

    REPLACE ECM Click here

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

    A001CPXE01
    *1 Front view of wire harness connector: (to CKP Sensor)
    *2 ECM Connector

    1. Disconnect the E54 crankshaft position sensor connector.

    2. Disconnect the E1 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
      E54-3 (VC) - E1-18 (VC) Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      E54-3 (VC) or E1-18 (VC) - Body ground Always 10 kΩ or higher

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR