Dtc P0335 Crankshaft Position Sensor A Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)

CHECK WIRE HARNESS (CRANKSHAFT POSITION SENSOR - ECM)

CHECK CRANKSHAFT POSITION SENSOR (INSTALLATION)

CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE)

DTC P0335 Crankshaft Position Sensor "A" Circuit

DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent


DESCRIPTION

The crankshaft position sensor (NE) signal consists of a magnet, iron core and pickup coil.
The NE signal plate (crankshaft position sensor plate) has 34 teeth and is installed on the crankshaft. The NE signal sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft angle and the engine revolution based on the NE signal, and the cylinder and the angle of the Variable Valve Timing (VVT) based on the combination of the VV and NE signal.

DTC No.
DTC Detection Condition
Trouble Area
P0335
When one of the following conditions is met:
  1. No crankshaft position sensor signal to ECM during cranking
    (1 trip detection logic)
  2. No crankshaft position sensor signal to ECM with engine speed 600 rpm or more
    (1 trip detection logic)
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. Signal plate (crankshaft)
  4. ECM
P0339
Conditions (a), (b) and (c) are met when no crankshaft position sensor signal is input for 0.05 sec. or more.
(a) Engine revolution 1,000 rpm or more
(b) STA signal is OFF
(c) 3 sec. or more have lapsed after STA signal is switched from ON to OFF

  1. Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit
  2. Reference:
  3. The waveform is as shown in the illustration.
    Item
    		Contact
    Symbols (Terminal No.)
    		NE+ (E17-21) - NE- (E17-20)
    VV1+ (E17-19) - VV1- (E17-29)
    VV2+ (E17-18) - VV2- (E17-28)
    Tool Setting
    		5 V/DIV., 20 msec./DIV.
    Condition
    		Idling

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

HINT:
  1. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.
  2. Check the engine speed. The engine speed can be checked by using the intelligent tester. To check, follow the operation below:
    1. Connect the intelligent tester to the DLC3.
    2. Start the engine.
    3. Turn the tester ON.
    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.
      The engine speed may be indicated as 0 despite the engine 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.
  3. Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Disconnect the C5 crankshaft position sensor connector.

  1. Measure the resistance of the sensor.

    Standard resistance:
    Tester Connection
    		Specified Condition
    1 - 2
    		1,630 to 2,740 Ω at cold
    1 - 2
    		2,065 to 3,225 Ω at hot
    HINT:
    The terms cold and hot refer to the temperature of the sensor. Cold means approximately -10 to 50°C (14 to 122°F). Hot means approximately 50 to 100°C (122 to 212°F).


NG
REPLACE CRANKSHAFT POSITION SENSOR
OK


2.CHECK WIRE HARNESS (CRANKSHAFT POSITION SENSOR - ECM)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Disconnect the C5 crankshaft position sensor connector.

  1. Disconnect the E17 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    C5-1 (NE+) - E17-21 (NE+)
    		Below 1 Ω
    C5-2 (NE-) - E17-20 (NE-)
    		Below 1 Ω
    C5-1 (NE+) - E17-21 (NE+) - Body ground
    		10 kΩ or higher
    C5-2 (NE-) - E17-20 (NE-) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK CRANKSHAFT POSITION SENSOR (INSTALLATION)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System. Dtc P0335 Crankshaft Position Sensor A Circuit

  1. Check the crankshaft position sensor installation.

    OK:
    Sensor is installed correctly.


NG
TIGHTEN CRANKSHAFT POSITION SENSOR
OK


4.CHECK CRANKSHAFT POSITION 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 POSITION SENSOR PLATE
OK

REPLACE ECM