DTC    P2564    Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit Low

DTC    P2565    Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit High

for Preparation Click here


DESCRIPTION

The variable nozzle vane type turbocharger consists primarily of a compressor wheel, turbine wheel, nozzle vane, unison ring, DC motor and nozzle vane position sensor.
The nozzle vane position sensor consists of a Hall IC and a magnetic yoke that rotates in unison with the movement of the linkage that actuates the nozzle vane. The nozzle vane position sensor converts the changes in the magnetic flux that are caused by the rotation of the DC motor (hence, the rotation of the magnetic yoke) into electric signals, and outputs them to the ECM. The ECM determines the actual nozzle vane position from the electric signals in order to calculate the target nozzle vane position.

P2564 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 3 seconds or more.
Nozzle vane position sensor output voltage is 0.25 V or less.
(1 trip detection logic)
  1. Open or short in nozzle vane position sensor circuit
  2. Turbocharger sub-assembly
    (Nozzle vane position sensor)
  3. ECM

P2565 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 3 seconds or more.
Nozzle vane position sensor output voltage is 4.85 V or more.
(1 trip detection logic)
  1. Open or short in nozzle vane position sensor circuit
  2. Turbocharger sub-assembly
    (Nozzle vane position sensor)
  3. ECM

HINT:
  1. If DTC P25654 or P2565 is stored, the following symptoms may appear:
    1. Lack of power


WIRING DIAGRAM


A198999E02


INSPECTION PROCEDURE

NOTICE:
When replacing the ECM, the ECM needs Registration and Initialization (Click here).

HINT:
  1. When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
  2. Read freeze frame data using the intelligent tester. 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 HARNESS AND CONNECTOR (ECM - NOZZLE VANE POSITION SENSOR)


    A200303E04

  1. Disconnect the nozzle vane position sensor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    B39-3 (VTA1) - B9-38 (VTAI)
    		Always
    		Below 1 Ω
    B39-1 (VNVC) - B9-37 (VNVC)
    		Always
    		Below 1 Ω
    B39-2 (VNE2) - B9-36 (VNE2)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    B39-3 (VTA1) or B9-38 (VTAI) - Body ground
    		Always
    		10 kΩ or higher
    B39-1 (VNVC) or B9-37 (VNVC) - Body ground
    		Always
    		10 kΩ or higher
    B39-2 (VNE2) or B9-36 (VNE2) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Nozzle Vane Position Sensor)
    *2
    		Front view of wire harness connector
    (to ECM)

  1. Reconnect the nozzle vane position sensor connector.

  1. Reconnect the ECM connector.



NG
Go to step 6
OK


2.INSPECT ECM


    A200304E01

  1. Disconnect the nozzle vane position sensor connector.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    B39-1 (VNVC) - B39-2 (VNE2)
    		Ignition switch ON
    		4.5 to 5.5 V

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to nozzle vane Position Sensor)

  1. Reconnect the nozzle vane position sensor connector.



NG
Go to step 5
OK


3.REPLACE TURBOCHARGER SUB-ASSEMBLY (NOZZLE VANE POSITION SENSOR)

  1. Replace the turbocharger sub-assembly (Click here).


NEXT


4.CHECK WHETHER DTC OUTPUT RECURS (DTC P2564 OR P2565)

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off and wait for 30 seconds or more.

  1. Turn the ignition switch to ON and wait for 10 seconds or more.

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

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    DTC P2564 or P2565
    		A
    No DTC output
    		B



B
END
A


5.REPLACE ECM

  1. Replace the ECM (Click here).



NEXT
Go to step 7

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT


7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Turn the ignition switch off and wait for 30 seconds or more.

  1. Turn the ignition switch to ON and wait for 10 seconds or more.

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

  1. Confirm that the DTC is not output again.


NEXT

END