Dtc P0335 Crankshaft Position Sensor A Circuit


DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ENGINE

READ VALUE USING GTS (ENGINE SPEED)

CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 AND/OR P0339)

INSPECT ECM TERMINAL VOLTAGE (CRANKSHAFT POSITION SENSOR)

CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)

INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)

REPLACE CRANKSHAFT POSITION SENSOR

REPLACE CRANKSHAFT

SECURELY REINSTALL CRANK POSITION SENSOR

REPLACE ECM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent


DESCRIPTION

The crankshaft position sensor system consists of a crank angle sensor plate and Magneto 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 on the crankshaft. The crankshaft position sensor generates 34 signals per crankshaft revolution. The ECM uses the NE signal to detect the crankshaft position and engine speed.

P0335
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Crank or start engine
Either of the following conditions is met (1 trip detection logic):
  1. No crankshaft position sensor signal to the ECM while cranking.
  2. No crankshaft position sensor signal to the ECM while engine running.
  1. Crankshaft position sensor
  2. Crankshaft (crank angle sensor plate)
  3. ECM

P0339
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine running at 1000 rpm or more with vehicle stationary
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):
  1. (a) Engine speed is 1000 rpm or more.
  2. (b) Starter signal is off.
  3. (c) 3 seconds or more have elapsed since the starter signal switched from on to off.
  1. Crankshaft position sensor
  2. Crankshaft (crank angle sensor plate)
  3. ECM

Related Data List
DTC No.
Data List
P0335
P0339
Engine Speed
HINT:
  1. If DTC P0335 and/or P0339 is stored, the following symptoms may appear:
    1. Difficulty starting
    2. Misfire
    3. Combustion noise
    4. Black smoke
    5. White smoke
    6. Lack of power

  1. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit
    Reference: Inspection using an oscilloscope.
    The correct waveform is as shown.
    ECM Terminal Name
    		Between G2+ and G2-
    Between NE+ and NE-
    Tester Range
    		2 V/DIV., 20 msec./DIV.
    Condition
    		Idling with warm engine

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.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AVX.html) and initialization (LandCruiser RM000000TIN08IX.html).
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 / Primary / Engine Speed.
      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.
  3. 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, and other data from the time the malfunction occurred.
1.CHECK ENGINE

  1. Check the engine cranking condition.

    Result:

    Result
    		Proceed to
    Cranking is OK.
    		A
    Does not crank at all.*
    		B
HINT:
*: When the engine cannot crank, there may be a malfunction in the starter assembly.


B
GO TO PROBLEM SYMPTOMS TABLE (ENGINE DOES NOT CRANK (DOES NOT START)) (LandCruiser RM0000012WF0AFX.html)
A


2.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 / Primary / 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 4
OK


3.CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 AND/OR P0339)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Clear the DTCs (LandCruiser RM000000PDK1ENX.html).

  1. Turn the engine switch off and wait for at least 30 seconds.

  1. Start the engine.

  1. Turn the GTS on.

  1. Idle the engine for 20 seconds or more.

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

  1. Read the DTCs.

    Result:
    Result
    		Proceed to
    DTC is not output
    		A
    DTC P0335 and/or P0339 is output
    		B


A
CHECK FOR INTERMITTENT PROBLEMS (LandCruiser RM000000PDQ1A0X.html)
B


4.INSPECT ECM TERMINAL VOLTAGE (CRANKSHAFT POSITION SENSOR)

  1. Inspect the ECM using an oscilloscope.

    1. While the engine is idling, check the waveform between the terminals of the ECM connector.


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit


Text in Illustration
*a
Component with harness connected
(ECM)
-
-

OK:

Tester Connection
Tester Range
Condition
Specified Condition
C152-28 (NE+) - C152-19 (NE-)
2 V/DIV.
50 msec./DIV.
Cranking to idling
Correct waveform as shown in illustration


OK
Go to step 10
NG


5.CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Check the crankshaft position sensor installation condition.

    OK:
    Crankshaft position sensor is installed correctly.
    Text in Illustration
    *a
    		Clearance


NG
Go to step 9
OK


6.INSPECT CRANKSHAFT (TEETH OF SENSOR PLATE)

  1. Inspect the teeth of the crank angle sensor plate.

    OK:
    Crank angle sensor plate does not have any cranks or deformation.


NG
Go to step 8
OK


7.REPLACE CRANKSHAFT POSITION SENSOR

  1. Replace the crankshaft position sensor (LandCruiser RM0000013Z6020X.html).



NEXT
Go to step 11

8.REPLACE CRANKSHAFT

  1. Replace the crankshaft (LandCruiser RM000005UAX000X.html).



NEXT
Go to step 11

9.SECURELY REINSTALL CRANK POSITION SENSOR

  1. Securely reinstall the crankshaft position sensor (LandCruiser RM0000013Z3028X.html).



NEXT
Go to step 11

10.REPLACE ECM

  1. Replace the ECM (LandCruiser RM0000013Z002DX.html).



NEXT
Go to step 11

11.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Clear the DTCs (LandCruiser RM000000PDK1ENX.html).

  1. Turn the engine switch off for 30 seconds or more.

  1. Start the engine and idle it for 20 seconds or more.

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

  1. Confirm that the DTC is not output again.


NEXT

END