Dtc P0047 Turbocharger/Supercharger Boost Control A Circuit Low


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR OPERATION)

INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR)

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

REPLACE TURBO MOTOR DRIVER

CHECK IF DTC OUTPUT RECURS (DTC P0047 AND/OR P0048)

DTC P0047 Turbocharger/Supercharger Boost Control "A" Circuit Low

DTC P0048 Turbocharger/Supercharger Boost Control "A" Circuit High


DESCRIPTION

Refer to DTC P0046 (Toyota Fortuner RM000002NCM01DX_06.html).

DTC No.
DTC Detection Condition
Trouble Area
P0047
All of following conditions met for 1 second or more
(1 trip detection logic):
  1. DC motor duty ratio 100%
  2. DC motor current 0.5 A or less
  1. Open in DC motor circuit
  2. Turbo motor driver
  3. DC Motor (Turbocharger sub-assembly)
P0048
DC motor current 6.5 A or more for 0.5 seconds or more
(1 trip detection logic)
  1. Short in DC motor circuit
  2. Turbo motor driver
  3. DC Motor (Turbocharger sub-assembly)

WIRING DIAGRAM

Refer to DTC P0046 (Toyota Fortuner RM000002NCM01DX_07.html).

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Toyota Fortuner RM0000012XK04BX.html) and initialization (Toyota Fortuner RM000000TIN04NX.html).
HINT:
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.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 to D in illustration below.

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0047 Turbocharger/Supercharger Boost Control A Circuit Low



OK
CHECK FOR INTERMITTENT PROBLEMS (Toyota Fortuner RM0000012X400RX.html)
NG


2.INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0047 Turbocharger/Supercharger Boost Control A Circuit Low

  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


3.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 P0047 Turbocharger/Supercharger Boost Control A Circuit Low

  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


4.REPLACE TURBO MOTOR DRIVER

NEXT


5.CHECK IF DTC OUTPUT RECURS (DTC P0047 AND/OR P0048)

  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 RM0000012WY00RX.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
    P0047 and/or P0048
    		A
    No output
    		B


B
END
A

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