Dtc P0335 Crankshaft Position Sensor A Circuit

Engine. Lexus Is250, Is220D. Gse20 Ale20
2Ad-Fhv Engine Control System. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT CRANKSHAFT POSITION SENSOR

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)

CHECK CRANKSHAFT TIMING SPROCKET

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC 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 magnet. The sensor plate rotates, and a pulse signal is created as each tooth passes by the pickup coil. The pickup coil generates 34 signals for each engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the common rail injection system is controlled.

DTC No.
DTC Detection Condition
Trouble Area
P0335
No crankshaft position sensor signal to ECM while cranking
(1 trip detection logic)
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. Crankshaft position sensor plate No. 1
  4. ECM
P0339
No crankshaft position sensor signal is input to ECM for 0.05 seconds or more, and conditions (a), (b) and (c) are met:
(1 trip detection logic)
(a) Engine speed is at 1,000 rpm or more
(b) STA signal is OFF
(c) 3 seconds or more have elapsed after STA signal is switched from ON to OFF
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. Crankshaft position sensor plate No. 1
  4. ECM

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
1.INSPECT CRANKSHAFT POSITION SENSOR


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Disconnect the E81 sensor connector.

  1. Measure the resistance of the sensor.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Cold
    		835 to 1,400 Ω
    1 - 2
    		Hot
    		1,060 to 1,645 Ω
    HINT:
    In the table above, the terms "cold" and "hot" refer to the temperature of the coils in the sensors. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F).


NG
REPLACE CRANKSHAFT POSITION SENSOR
OK


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


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Disconnect the E81 sensor connector.

  1. Disconnect the E59 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E81-1 - NE+ (E59-78)
    		Below 1 Ω
    E81-2 - NE- (E59-77)
    		Below 1 Ω
    E81-1 or NE+ (E59-78) - Body ground
    		10 kΩ or higher
    E81-2 or NE- (E59-77) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Check the sensor installation.

    OK:
    Sensor is installed correctly.


NG
REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR
OK


4.CHECK CRANKSHAFT TIMING SPROCKET

  1. Check the teeth of the crankshaft timing sprocket.

    OK:
    The sensor plate's teeth do not have any cracks or deformation.


NG
REPLACE CRANKSHAFT TIMING SPROCKET
OK

REPLACE ECM