STOP AND START SYSTEM, Diagnostic DTC:P0335

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

DESCRIPTION

This description and the following Inspection Procedure are for DTC P0335 witch is stored in the engine stop and start ECU.

The crank position sensor sends an engine speed signal (NE signal) to the ECM. The engine speed signal is then sent directly from the NEO terminal of the ECM to the engine stop and start ECU.

In addition, the ECM sends the engine speed value to the engine stop and start ECU via CAN communication, and the engine stop and start ECU compares the NE signal with the engine speed to check for errors in the NE signal.

If any errors are detected, the engine stop and start ECU cancels stop and start control.

DTC No. DTC Detection Condition Trouble Area
P0335

All of the following conditions continue for 10 seconds (2 trip detection logic):


  • Normal communication between the ECM and the engine stop and start ECU.

  • Engine speed (NE signal) is below 6000 rpm.

  • Difference between the NE signal that is sent directly from ECM and the engine speed that is sent via CAN is 200 rpm or higher.

Both of the following conditions continue for 2 seconds or more (1 trip detection logic):


  • Starter is operating.

  • No NE signal input.

  • Harness or connector

  • Crankshaft position sensor

  • ECM

  • Engine stop and start ECU

Tech Tips

DTCs for the Stop and Start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs Click here.


  1. After troubleshooting, perform the following steps to recheck for DTCs.

    Tech Tips


    • If the battery terminal has been disconnected, the stop and start will be prohibited. In this case, drive the vehicle for 15 to 40 minutes to permit the stop and start operation.

    • Allow the engine to idle for 3 minutes after the engine warms up and check that the engine speed is within 50 rpm of the target idle speed.


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs Click here.

    4. Start the engine and wait for at least 15 seconds.

    5. Check that no DTCs are output Click here.

    A005L5SE10

  2. Check if the Stop and Start system operates normally.

    Tech Tips

    If the battery terminal has been disconnected, the stop and start will be prohibited. In this case, drive the vehicle for 15 to 40 minutes to permit the stop and start operation.


    1. Warm up the engine.

    2. Turn the air conditioning system off.

    3. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    4. Stop the vehicle, allow the engine to stop due to stop and start system control (with the shift lever in D).

    5. Release the brake pedal to allow the engine to restart (with the shift lever in D).

WIRING DIAGRAM

A005LFTE04
*a Crankshaft Position Sensor
*b Engine Stop and Start ECU
*c CAN Communication

CAUTION / NOTICE / HINT

Note


  • If the engine stop and start ECU is being replaced, register the previously recorded number of starter operations into the new engine stop and start ECU Click here.

  • After the engine stop and start ECU is replaced or after an air conditioner kit is installed, clear the A/C information stored in the engine stop and start ECU Click here.

  • After the engine stop and start ECU or airbag sensor assembly (yaw rate sensor) is replaced, initialize and calibrate 0 point of deceleration sensor Click here.

Tech Tips

Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

PROCEDURE


  1. CHECK FOR DTC (SFI SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Check if SFI system DTC P0335, P0336, P0337, P0338 or P0339 is output Click here.

      Result
      Result Proceed to
      No SFI system DTCs are output A
      SFI system DTC P0335, P0336, P0337, P0338 or P0339 is output B

    B

    GO TO SFI SYSTEM Click here

    A

  2. READ VALUE USING GTS (ENGINE SPEED (NE SIGNAL))


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Stop and Start / Data List / Engine Spd (NE Signal).

    5. Check the GTS display to confirm that the engine speed signal is input.

      OK
      Engine speed signal is input (the speeds displayed on the tachometer and the GTS are almost the same).

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (ECM - ENGINE STOP AND START ECU)


    1. Disconnect the A58 ECM connector.

    2. Disconnect the A73 engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A73-10 (NE) - A58-30 (NEO) Always Below 1 Ω
      A73-10 (NE) - Body ground Always 10 kΩ or higher
      A58-30 (NEO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - BODY GROUND)


    1. Disconnect the A72 engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F72-8 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT ENGINE STOP AND START ECU (NE SIGNAL INPUT)


    1. Connect an oscilloscope to the NE and GND terminals of the engine stop and start ECU connector.

      A005K6CE02
      Text In Illustration
      *a

      Component with harness connected:

      (Engine Stop and Start ECU)

      		 *b Waveform

    2. Start the engine.

    3. Check the signal waveform according to the condition(s) in the table below.

      Item Condition
      Tester connection NE - GND
      Tool setting 5 V/DIV, 2 ms/DIV
      Condition Idling with warm engine

      Tech Tips

      The wavelength becomes shorter as the engine speed increases.

      Result
      Tester Connection Condition Result Proceed to
      A73-10 (NE) - A72-8 (GND) Idling with warm engine The correct waveform appears A
      Stuck at 0 to 1.5 V B
      Stuck at 8 to 14 V C

    A

    REPLACE ENGINE STOP AND START ECU Click here

    C

    CHECK SFI SYSTEM Click here

    B

  6. INSPECT ENGINE STOP AND START ECU (NE TERMINAL VOLTAGE)


    1. Disconnect the A58 ECM connector.

    2. Turn the ignition switch to ON.

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

      A005JZ9E01
      Text In Illustration
      *a

      Component with harness connected:

      (Engine Stop and Start ECU)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      A73-10 (NE) - F72-8 (GND) Ignition switch ON 8 to 14 V

    OK

    CHECK SFI SYSTEM Click here

    NG

    REPLACE ENGINE STOP AND START ECU Click here