Dtc P0335 Crankshaft Position Sensor A Circuit


DESCRIPTION

MONITOR DESCRIPTION

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)

CHECK CRANK ANGLE SENSOR PLATE (TEETH OF SENSOR PLATE)

REPLACE CRANKSHAFT POSITION SENSOR

CHECK WHETHER DTC OUTPUT RECURS

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 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 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
Either condition is met:
  1. No crankshaft position sensor signal is sent to the ECM while cranking (1 trip detection logic).
  2. No crankshaft position sensor signal is sent to the ECM at an engine speed of 600 rpm or more (1 trip detection logic).
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. Crankshaft (crank angle sensor plate)
  4. ECM
P0339
Under conditions (a), (b) and (c), no crankshaft position sensor signal is sent to the ECM for 0.05 seconds or more (1 trip detection logic):
(a) The engine speed is 1000 rpm or more.
(b) The starter signal is off.
(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 (crank angle sensor plate)
  4. ECM

  1. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit
    Reference: Inspection using an oscilloscope (VV1, VV2 and NE Signal Waveforms).
    HINT:
    1. The correct waveforms are as shown.
    2. VV1+ and VV2+ are the VVT sensor signals, and NE+ is the crankshaft position sensor signal.
    3. Grounding failure of the shielded wire may cause noise in the waveforms.
    Item
    		Content
    Terminal
    		VV1+ - VV1-
    VV2+ - VV2-
    NE+ - NE-
    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 running, 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.

WIRING DIAGRAM

  1. for Automatic Transmission

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. for Manual Transmission

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gr-Fe Engine Control.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

HINT:
  1. Check the engine speed. The engine speed can be checked by using the GTS. To check the engine speed, perform 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 / All Data / 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 lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
  2. Read freeze frame data using the GTS. Freeze frame data records the engine condition 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 engine switch on (IG).

  1. Turn the GTS on.

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

  1. Start the engine.

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

    OK:
    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 RM000000PDQ18TX.html)

2.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

  1. Inspect the crankshaft position sensor (LandCruiser RM0000028AP01EX_01_0001.html).



NG
REPLACE CRANKSHAFT POSITION SENSOR (LandCruiser RM0000028AR01KX.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 (Check for Open):
    for Automatic Transmission
    Tester Connection
    		Condition
    		Specified Condition
    C14-1 - C34-16 (NE+)
    		Always
    		Below 1 Ω
    C14-2 - C34-17 (NE-)
    		Always
    		Below 1 Ω
    for Manual Transmission
    Tester Connection
    		Condition
    		Specified Condition
    C14-1 - C34-6 (NE+)
    		Always
    		Below 1 Ω
    C14-2 - C34-5 (NE-)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    for Automatic Transmission
    Tester Connection
    		Condition
    		Specified Condition
    C14-1 or C34-16 (NE+) - Body ground
    		Always
    		10 kΩ or higher
    C14-2 or C34-17 (NE-) - Body ground
    		Always
    		10 kΩ or higher
    for Manual Transmission
    Tester Connection
    		Condition
    		Specified Condition
    C14-1 or C34-6 (NE+) - Body ground
    		Always
    		10 kΩ or higher
    C14-2 or C34-5 (NE-) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the crankshaft position sensor connector.

  1. Reconnect the ECM connector.



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, Gdj150,155.1Gr-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 RM0000028AO01KX.html)
OK


5.CHECK CRANK ANGLE SENSOR PLATE (TEETH OF SENSOR PLATE)

  1. Check the teeth of the sensor plate.

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


NG
REPLACE CRANKSHAFT (LandCruiser RM000002BK5054X.html)
OK


6.REPLACE CRANKSHAFT POSITION SENSOR

  1. Replace the crankshaft position sensor (LandCruiser RM0000028AR01KX.html).


NEXT


7.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Clear the DTCs (LandCruiser RM000000PDK1DIX.html).

  1. Start the engine.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    No output
    		A
    P0335 or P0339
    		B
HINT:
If the engine does not start, replace the ECM.


B
REPLACE ECM (LandCruiser RM00000329203TX.html)
A

END