Dtc P0335 Crankshaft Position Sensor A Circuit


DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

COMPONENT OPERATING RANGE

CONFIRMATION DRIVING PATTERN

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING GTS (ENGINE SPEED)

INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

INSPECT NO. 2 CRANKSHAFT TIMING SPROCKET (TEETH OF SENSOR PLATE)

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent


DESCRIPTION

The crankshaft position sensor system consists of a sensor plate and a pickup coil.
The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of wound copper wire, an iron core and magnet. The sensor plate rotates and, as each tooth passes by the pickup coil, a pulse signal is created. The pickup coil 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 time and ignition timing are controlled.

DTC No.
DTC Detection Condition
Trouble Area
P0335
When either of the following conditions is met (1 trip detection logic):
  1. No crankshaft position sensor signal is sent to the ECM while cranking.
  2. No crankshaft position sensor signal is sent to the ECM at an engine speed of 600 rpm or less.
  3. The crankshaft position sensor signal is missing despite the camshaft position sensor signal inputs being normal after the engine is cranked.
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. No. 2 crankshaft timing sprocket (sensor plate)
  4. Camshaft position sensor
  5. ECM
P0339
All of the following conditions are met (1 trip detection logic):
(a) The engine speed is 1000 rpm or more.
(b) No crankshaft position sensor signal for 0.05 seconds or more.
(c) 3 seconds or more have elapsed since the starter signal switched from ON to OFF.
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. Crankshaft
  4. ECM

  1. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.2Tr-Fe Engine Control.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit
    Reference: Inspection using an oscilloscope.
    HINT:
    1. NE stands for the crankshaft position sensor signal.
    2. Grounding failure of the shielded wire may cause noise in the waveforms.

    Tester Connection
    		Tool Setting
    		Condition
    		Specified Condition
    C153-27 (NE+) - C153-34 (NE-)
    		5 V/DIV, 20 msec./DIV
    		Idling
    		The correct waveform is as shown

MONITOR DESCRIPTION

If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this as a malfunction of the sensor.
If the malfunction is not repaired successfully, a DTC is stored 10 seconds after the engine is next started.

MONITOR STRATEGY


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

COMPONENT OPERATING RANGE


Crankshaft position sensor
  1. Crankshaft position sensor output voltage fluctuates while crankshaft revolving
  2. 34 crankshaft position sensor signals per crankshaft revolution

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the GTS on.
  6. Start the engine.
  7. Idle the engine for 20 seconds or more.
  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
  9. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  11. Input the DTC: P0335 or P0339.
  12. Check the DTC judgment result.

    GTS Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.2Tr-Fe Engine Control.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

HINT:
After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor.
  1. Installation condition of the camshaft position sensor
  2. Installation condition of the camshaft
  3. Connection of the camshaft position sensor connector
HINT:
  1. If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.
  2. 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 and ECT / Data List / Engine Speed.
    1. 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 less than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
  3. Read freeze frame data using the GTS. 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.
1.READ VALUE USING GTS (ENGINE SPEED)

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

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

  1. Start the engine.

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

    Standard:
    Correct values are displayed.
    HINT:
    1. To check the engine speed change, display the graph on the GTS.
    2. If the engine does not start, check the engine speed while cranking.
    3. If the engine speed indicated on the GTS remains at zero (0), there may be an open or short in the crankshaft position sensor circuit.


NG
Go to step 2
OK

CHECK FOR INTERMITTENT PROBLEMS (LandCruiser RM000000VNL00AX.html)

2.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

  1. Inspect the crankshaft position sensor (LandCruiser RM0000017E800LX.html).



NG
REPLACE CRANKSHAFT POSITION SENSOR (LandCruiser RM0000017E900MX.html)
OK


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

  1. Disconnect the crankshaft position sensor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C53-1 (NE) - C153-27 (NE+)
    		Always
    		Below 1 Ω
    C53-2 (NE-) - C153-34 (NE-)
    		Always
    		Below 1 Ω
    C53-1 (NE) or C153-27 (NE+) - Body ground
    		Always
    		10 kΩ or higher
    C53-2 (NE-) or C153-34 (NE-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.2Tr-Fe Engine Control.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Check the crankshaft position sensor installation.

    OK:
    Sensor is installed correctly.


NG
SECURELY REINSTALL SENSOR (LandCruiser RM0000017E700MX.html)
OK


5.INSPECT NO. 2 CRANKSHAFT TIMING SPROCKET (TEETH OF SENSOR PLATE)

  1. Check the teeth of the sensor plate.

    OK:
    Sensor plate does not have any cracks or deformation.


NG
REPLACE NO. 2 CRANKSHAFT TIMING SPROCKET (LandCruiser RM00000125A066X.html)
OK

REPLACE ECM (LandCruiser RM000000VW203EX.html)