Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1GR-FE ENGINE CONTROL

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 CRANKSHAFT ANGLE SENSOR ROTOR (TEETH OF SENSOR ROTOR)

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 angle sensor rotor and pickup coil.

The sensor rotor has 34 teeth and is installed to the crankshaft. The pickup coil is made of wound copper wire, an iron core and magnet. The sensor rotor 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	Either condition is met: No crankshaft position sensor signal is sent to the ECM while cranking (1 trip detection logic). No crankshaft position sensor signal is sent to the ECM at an engine speed of 600 rpm or more (1 trip detection logic).	Open or short in crankshaft position sensor circuit Crankshaft position sensor Crankshaft angle sensor rotor 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) Engine speed is 1000 rpm or more. (b) Starter signal is off. (c) 3 seconds or more have elapsed since the starter signal switched from on to off.	Open or short in crankshaft position sensor circuit Crankshaft position sensor Crankshaft angle sensor rotor ECM

Dtc P0335 Crankshaft Position Sensor A Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Reference: Inspection using an oscilloscope (VV1, VV2 and NE Signal Waveforms).

HINT:

The correct waveforms are as shown.

VV1+ and VV2+ are the VVT sensor signals, and NE+ is the crankshaft position sensor signal.

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 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.

WIRING DIAGRAM

Dtc P0335 Crankshaft Position Sensor A Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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 VVT sensor.

Installation condition of the VVT sensor

Installation condition of the camshaft

Connection of the VVT sensor connector

HINT:

If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.

Check the engine speed. The engine speed can be checked by using the GTS. To check the engine speed, follow the procedure below:

Connect the GTS to the DLC3.

Start the engine.

Turn the GTS on.

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

The engine speed may be indicated as zero despite the crankshaft revolving 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.

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)

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

Start the engine.

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

OK:
Correct values are displayed.

HINT:

To check the engine speed change, display the graph on the GTS.

If the engine does not start, check the engine speed while cranking.

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.

Go to step 2

CHECK FOR INTERMITTENT PROBLEMS ()

2.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

Inspect the crankshaft position sensor ().

REPLACE CRANKSHAFT POSITION SENSOR ()

OK

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

Disconnect the crankshaft position sensor connector.

Disconnect the ECM connector.

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

Standard Resistance:

for LHD
Tester Connection	Condition	Specified Condition
C1-1 - C45-110 (NE+)	Always	Below 1 Ω
C1-2 - C45-111 (NE-)	Always	Below 1 Ω
C1-1 or C45-110 (NE+) - Body ground	Always	10 kΩ or higher
C1-2 or C45-111 (NE-) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
C1-1 - C46-110 (NE+)	Always	Below 1 Ω
C1-2 - C46-111 (NE-)	Always	Below 1 Ω
C1-1 or C46-110 (NE+) - Body ground	Always	10 kΩ or higher
C1-2 or C46-111 (NE-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)

Check the crankshaft position sensor installation.

OK:
Sensor is installed correctly.

SECURELY REINSTALL SENSOR ()

OK

5.CHECK CRANKSHAFT ANGLE SENSOR ROTOR (TEETH OF SENSOR ROTOR)

Check the teeth of the sensor rotor.

OK:
Sensor rotor teeth do not have any cracks or deformation.

REPLACE CRANKSHAFT ()

OK

6.REPLACE CRANKSHAFT POSITION SENSOR

Replace the crankshaft position sensor ().

NEXT

7.CHECK WHETHER DTC OUTPUT RECURS

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

Clear the DTCs ().

Start the engine.

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

Read the DTCs.

Result
Result	Proceed to
No DTC is output	A
P0335 or P0339 is output	B

HINT:

If the engine does not start, replace the ECM.

REPLACE ECM ()

END

1GR-FE ENGINE CONTROL

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

SFI SYSTEM