Dtc P0337 Crankshaft Position Sensor A Circuit Low Input


DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC OUTPUT

CHECK ECM (CRANKSHAFT POSITION SENSOR VOLTAGE)

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

CHECK ECM (CHECK RESISTANCE)

REPLACE CRANKSHAFT POSITION SENSOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE ECM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P0337 Crankshaft Position Sensor "A" Circuit Low Input

DTC P0338 Crankshaft Position Sensor "A" Circuit High Input


DESCRIPTION

Refer to DTC P0335 (LandCruiser RM00000187F09GX_01.html).

P0337
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 4 seconds or more
Output voltage of crankshaft position sensor is less than 0.3 V for 4 seconds.
(1 trip detection logic)
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. ECM

P0338
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Engine switch on (IG) for 4 seconds or more
Output voltage of crankshaft position sensor is higher than 4.7 V for 4 seconds.
(1 trip detection logic)
  1. Crankshaft position sensor
  2. Crankshaft (crank angle sensor plate)
  3. ECM
HINT:
  1. If DTC P0337 or P0338 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 P0337 Crankshaft Position Sensor A Circuit Low Input
    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

When the sensor output voltage remains at less than 0.3 V, or higher than 4.7 V, the ECM stores a DTC.

WIRING DIAGRAM

Refer to DTC P0335 (LandCruiser RM00000187F09GX_02.html).

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AVX.html) and initialization (LandCruiser RM000000TIN08IX.html).
HINT:
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 DTC OUTPUT

  1. Connect the GTS to the DLC3.

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

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

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

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

  1. Disconnect the crankshaft position sensor connector.

  1. Turn the engine switch on (IG) for 4 seconds or more.

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


Result:

Result
Proceed to
DTC does not change
A
DTC changes
B


B
Go to step 5
A


2.CHECK ECM (CRANKSHAFT POSITION SENSOR VOLTAGE)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P0337 Crankshaft Position Sensor A Circuit Low Input

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C152-20 (VCNE) - C152-19 (NE-)
    		Engine switch on (IG)
    		4.5 to 5.5 V
    Text in Illustration
    *a
    		Component with harness connected
    (ECM)


NG
Go to step 7
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
    r7-1 (NE+) - C152-28 (NE+)
    		Always
    		Below 1 Ω
    r7-2 (NE-) - C152-19 (NE-)
    		Always
    		Below 1 Ω
    r7-1 (NE+) or C152-28 (NE+) - Body ground and other terminals
    		Always
    		10 kΩ or higher
    r7-2 (NE-) or C152-19 (NE-) - Body ground and other terminals
    		Always
    		10 kΩ or higher

  1. Reconnect the crankshaft position sensor connector.



NG
Go to step 6
OK


4.CHECK ECM (CHECK RESISTANCE)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System. Dtc P0337 Crankshaft Position Sensor A Circuit Low Input

  1. Disconnect the crankshaft position sensor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C152-20 (VCNE) - C152-28 (NE+)
    		Engine switch off
    		No short or open circuit
    C152-28 (NE+) - C152-19 (NE-)
    		Engine switch off
    		No short or open circuit
    Text in Illustration
    *a
    		Component with harness connected
    (ECM)

  1. Reconnect the crankshaft position sensor connector.



NG
Go to step 7
OK


5.REPLACE CRANKSHAFT POSITION SENSOR

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



NEXT
Go to step 8

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

  1. Repair or replace the harness or connector.



NEXT
Go to step 8

7.REPLACE ECM

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


NEXT


8.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. Turn the engine switch on (IG) for 4 seconds or more.

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

  1. Confirm that the DTC is not output.


NEXT

END