Dtc P0335/12 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 NO. 1 CRANKSHAFT POSITION SENSOR PLATE

DTC P0335/12 Crankshaft Position Sensor "A" Circuit

DTC P0339/13 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 an iron core and magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 34 signals for each engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the common rail system is controlled.

DTC No.
DTC Detection Condition
Trouble Area
P0335/12
When either condition below is met:
  1. No crankshaft position sensor signal to ECM while 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. No. 1 crankshaft position sensor plate
  4. ECM
P0339/13
No crankshaft position sensor signal to ECM is input for 0.05 seconds or more, and conditions (a), (b) and (c) are met
(1 trip detection logic):
  1. Engine is at 1,000 rpm or more
  2. STA signal is OFF
  3. 3 seconds or more have elapsed after STA signal is switched from ON to OFF
  1. Open or short in crankshaft position sensor circuit
  2. Crankshaft position sensor
  3. No. 1 crankshaft position sensor plate
  4. ECM

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0335/12 Crankshaft Position Sensor A Circuit


INSPECTION PROCEDURE

HINT:
  1. If no trouble is found in the diagnostic troubleshooting procedure of DTC P0335, troubleshoot the engine mechanical system.
  2. 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, and other data from the time the malfunction occurred.
NOTICE:
If the ECM is replaced, the new ECM needs initialization (Toyota Fortuner RM0000012X2005X.html).
1.INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0335/12 Crankshaft Position Sensor A Circuit

  1. Disconnect the C5 sensor connector.



  1. Measure the resistance of the sensor.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Cold
    		1,630 to 2,740 Ω
    1 - 2
    		Hot
    		2,065 to 3,225 Ω
    NOTICE:
    In the chart above, 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).

    HINT:
    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0335/12 Crankshaft Position Sensor A Circuit
    While cranking or idling the engine, check the waveform of the ECM connectors using an oscilloscope.
    Reference:
    Tester Connection
    		Specified Condition
    E6-23 (G+) - E6-31 (G-)
    E7-27 (NE+) - E7-34 (NE-)
    		Correct waveform is as shown
    Tool Setting
    		Condition
    5 V/DIV., 20 msec./DIV.
    		Idling with warm engine
    HINT:
    The waveform varies depending on the engine speed.


NG
REPLACE CRANKSHAFT POSITION SENSOR
OK


2.CHECK WIRE HARNESS (CRANKSHAFT POSITION SENSOR - ECM)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0335/12 Crankshaft Position Sensor A Circuit

  1. Disconnect the C5 sensor connector.

  1. Disconnect the E7 ECM connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    C5-1 - E7-27 (NE+)
    		Below 1 Ω
    C5-2 - E7-34 (NE-)
    		Below 1 Ω
    C5-1 or E7-27 (NE+) - Body ground
    		10 kΩ or higher
    C5-2 or E7-34 (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 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0335/12 Crankshaft Position Sensor A Circuit

  1. Check the sensor installation.

    OK:
    Sensor is installed correctly.


NG
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR
OK


4.CHECK NO. 1 CRANKSHAFT POSITION SENSOR PLATE

  1. Check the teeth of the No. 1 crankshaft position sensor plate.

    OK:
    Plate's teeth do not have any cracks or deformation.


NG
REPLACE NO. 1 CRANKSHAFT POSITION SENSOR PLATE
OK

REPLACE ECM