DTC    P0335    Crankshaft Position Sensor "A" Circuit

DTC    P0337    Crankshaft Position Sensor "A" Circuit Low Input

DTC    P0338    Crankshaft Position Sensor "A" Circuit High Input

DTC    P0339    Crankshaft Position Sensor "A" Circuit Intermittent

для подготовки Нажмите здесь


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
When either condition below is met:
  1. No CKP sensor signal to ECM while cranking (1 trip detection logic)
  2. No CKP sensor signal to ECM at engine speed of 450 rpm or more (1 trip detection logic)
  3. When normal G2 signal is input, malfunctioning NE signal is input (1 trip detection logic)
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. CKP sensor plate
  4. ECM
P0337
Output voltage of CKP sensor 0.3 V or less for 4 seconds (1 trip detection logic)
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. CKP sensor plate
  4. ECM
P0338
Output voltage of CKP sensor 4.7 V or more for 4 seconds (1 trip detection logic)
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. CKP sensor plate
  4. 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
  1. Open or short in CKP sensor circuit
  2. CKP sensor
  3. CKP sensor plate
  4. ECM

  1. A149739E02
    Reference: Inspection using an oscilloscope.

    УКАЗАНИЕ:
    1. The correct waveform is as shown.
    2. G2+ stands for the CMP sensor signal, and NE+ stands for the CKP sensor signal.
      Item
      		Content
      Terminal
      		NE+ - NE-
      G2+ - G2-
      Equipment Setting
      		5 V/DIV., 20 msec./DIV.
      Condition
      		Cranking or idling


MONITOR DESCRIPTION

If there is no signal from the crankshaft position sensor despite the engine revolving, 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


A150460E02


INSPECTION PROCEDURE

УКАЗАНИЕ:
  1. If no problem is found by this diagnostic troubleshooting procedure, troubleshooting the engine mechanical system.
  2. 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.
    1. The engine speed may be indicated as zero despite the engine revolving 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.
  3. 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 running or stopped, 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.

1.READ VALUE OF INTELLIGENT TESTER (ENGINE SPEED)

  1. Connect the intelligent tester to the DLC3.

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

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

  1. Start the engine.

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

    Standard:
    Correct values are displayed.

    УКАЗАНИЕ:
    1. To check the engine speed change, display the graph on the tester.
    2. If the engine does not start, check the engine speed while cranking.
    3. 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 (Нажмите здесь)
NG


2.INSPECT CRANKSHAFT POSITION SENSOR (SENSOR POWER SOURCE)
A107149E45

  1. Disconnect the E54 crankshaft position sensor connector.

  1. 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
Перейдите к шагу 8
OK


3.CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
A107710E25

  1. Disconnect the E54 crankshaft position sensor connector.

  1. Disconnect the E1 ECM connector.

  1. 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)
BR03795E25

  1. Check the crankshaft position sensor installation.

    OK:
    Sensor is installed correctly.



NG
SECURELY REINSTALL SENSOR (Нажмите здесь)
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 (Нажмите здесь)
OK


6.REPLACE CRANKSHAFT POSITION SENSOR

  1. Replace the crankshaft position sensor (see page Нажмите здесь).


NEXT


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

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the tester ON.

  1. Clear DTCs

  1. Start the engine.

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

  1. Read DTCs.

    Result:

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



B
REPLACE ECM (Нажмите здесь)
A

END 

8.CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
A150456E03

  1. Disconnect the E54 crankshaft position sensor connector.

  1. Disconnect the E1 ECM connector.

  1. 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



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Нажмите здесь)