Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P0046)

INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR OPERATION)

INSPECT TURBO MOTOR DRIVER

INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR RESISTANCE)

CHECK HARNESS AND CONNECTOR (DC MOTOR - TURBO MOTOR DRIVER)

CHECK IF DTC OUTPUT RECURS (DTC P0046)

DTC P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance


DESCRIPTION

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 ECM outputs a signal to the turbo motor driver, which actuates the DC motor, to control the nozzle vane position.

DTC No.
DTC Detection Condition
Trouble Area
P0046
Either of following conditions met:
  1. DC motor duty ratio +/- 100% for 1.3 seconds or more
  2. DC motor current 2.2 A or more for 5 seconds or more when motor driving
    (1 trip detection logic)
  1. DC Motor (Turbocharger sub-assembly)
  2. Turbo Motor Driver

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance


INSPECTION PROCEDURE

HINT:
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 moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
NOTICE:
After replacing the ECM, the new ECM needs registration (Toyota Fortuner RM0000012XK030X.html) and initialization (Toyota Fortuner RM0000012X2005X.html).
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P0046)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch ON and turn the tester ON.

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

  1. Read the DTCs.

    Result:
    Display (DTC Output)
    		Proceed to
    P0046
    		A
    P0046 and other DTCs
    		B
    HINT:
    If any DTCs other than P0046 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (Toyota Fortuner RM000002YV7010X.html)
A


2.INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR OPERATION)

  1. Turn the ignition switch ON.

  1. Turn the ignition switch OFF and check the DC motor operation.

    OK:
    When ignition switch is turned OFF, operation link moves as shown in A through D in illustration below.
    Operation link and motor rod move smoothly when moving from position shown in A to that shown in B, and from position shown in B to that shown in C.

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance



NG
Go to step 3
OK

CHECK FOR INTERMITTENT PROBLEMS (Toyota Fortuner RM0000012X400LX.html)

3.INSPECT TURBO MOTOR DRIVER


  1. Voltage Inspection



      Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

    1. Turn the ignition switch ON (IG).

    2. Measure the voltage between the terminals of the turbo motor driver connector.

      Standard voltage:
      Tester Connection
      		Specified Condition
      +B (T34-3) - GND (T34-4)
      		11 to 14 V


  1. Output Waveform Inspection



      Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

    1. Turn the ignition switch ON (IG).

    2. Check the waveform of the ECM connectors using an oscilloscope.

      OK:
      Tester Connection
      		Condition
      		Specified Condition
      VNTI (T34-2) - GND (T34-4)
      		Ignition switch ON
      		Correct waveform is as shown


NG
REPLACE TURBO MOTOR DRIVER
OK


4.INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR RESISTANCE)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

  1. Disconnect the T10 DC motor connector.

  1. Measure the resistance of the DC motor.

    Standard resistance:
    Tester Connection
    		Specified Condition
    M+ (2) - M- (1)
    		1 to 100 Ω


NG
REPLACE TURBOCHARGER SUB-ASSEMBLY (Toyota Fortuner RM00000143U002X.html)
OK


5.CHECK HARNESS AND CONNECTOR (DC MOTOR - TURBO MOTOR DRIVER)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

  1. Disconnect the T10 DC motor connector.

  1. Disconnect the T34 turbo motor drive connector.

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

    Standard resistance (Check for open):
    Tester Connection
    		Specified Condition
    M+ (T34-12) - M+ (T10-2)
    		Below 1 Ω
    M- (T34-5) - M- (T10-1)
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Specified Condition
    M+ (T34-12) or M+ (T10-2) - Body ground
    		10 kΩ or higher
    M- (T34-5) or M- (T10-1) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK IF DTC OUTPUT RECURS (DTC P0046)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch ON and turn the tester ON.

  1. Clear the DTC (Toyota Fortuner RM0000012WY00LX.html).

  1. Start the engine.

  1. Perform the test drive.

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

  1. Read the DTCs.

    Result:
    Display (DTC Output)
    		Proceed to
    P0046
    		A
    No output
    		B


B
END
A

REPLACE TURBOCHARGER SUB-ASSEMBLY (Toyota Fortuner RM00000143U002X.html)