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


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0046, P0047 AND/OR P0048)

INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR OPERATION)

INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR RESISTANCE)

CHECK HARNESS AND CONNECTOR (DC MOTOR - ECM)

REPLACE ECM

REPLACE TURBOCHARGER SUB-ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

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

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


DESCRIPTION

These DTCs indicate that the DC motor of the turbocharger is malfunctioning. The ECM monitors the DC motor current to detect an open or short in the DC motor circuit. If the current meets certain criteria, the ECM stores a DTC and illuminates the MIL immediately.
The DC motor is used to operate the nozzle vane of the turbocharger. The nozzle vane opens and closes to change the velocity of exhaust emissions in order to control the turbo pressure. The ECM varies the duty ratio of the DC motor in accordance with the driving conditions.
If the nozzle vane is stuck closed (DC motor stuck off), drivability may deteriorate at wide open throttle. If the nozzle vane is stuck open (DC motor stuck on), drivability may deteriorate at intermediate throttle positions or the engine power may be insufficient.

P0046
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 5 seconds
Either condition is met when the motor is operating (1 trip detection logic):
  1. DC motor duty ratio is +/-100% for 1.3 seconds or more.
  2. DC motor current is 2.2 A or higher for 5 seconds or more.
  1. Open or short in DC motor (turbocharger sub-assembly) circuit
  2. DC motor (turbocharger sub-assembly)
  3. Turbocharger nozzle vane is stuck or movement is irregular

P0047
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
2 seconds after engine is started, race engine for 1 second
Both conditions are met for 1 second or more when the motor is operating (1 trip detection logic):
  1. DC motor duty ratio is 100%.
  2. DC motor current is 0.5 A or less.
  1. Open in DC motor (turbocharger sub-assembly) circuit
  2. DC motor (turbocharger sub-assembly)
  3. Turbocharger nozzle vane is stuck or movement is irregular

P0048
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
2 seconds after engine is started, race engine for 1 second
Overcurrent is detected 25 times or more (1 trip detection logic).
  1. Short in DC motor (turbocharger sub-assembly) circuit
  2. DC motor (turbocharger sub-assembly)
  3. Turbocharger nozzle vane is stuck or movement is irregular
HINT:
  1. If DTC P0046, P0047 and/or P0048 is stored due to the nozzle vane being stuck closed, the following symptom may appear:
    1. Vehicle surge when driving with full load
  2. If DTC P0046, P0047 and/or P0048 is stored due to the nozzle vane being stuck open, the following symptoms may appear:
    1. Lack of power
    2. Vehicle surge or hesitation under light or medium load

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.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 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 FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0046, P0047 AND/OR P0048)

  1. Connect the intelligent tester to the DLC3.

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

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

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P0046, P0047 and/or P0048 is output
    		A
    P0046, P0047 and/or P0048 and other DTCs are output
    		B
    HINT:
    If codes other than P0046, P0047 and/or P0048 are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART (LandCruiser RM0000031HW07LX.html)
A


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

  1. Inspect the turbocharger sub-assembly (LandCruiser RM000001A3W03QX_01_0007.html).



NG
Go to step 3
OK

CHECK FOR INTERMITTENT PROBLEMS

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


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

  1. Disconnect the DC motor connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (M-) - 2 (M+)
    		Always
    		1 to 100 Ω
    Text in Illustration
    *a
    		Component without harness connected
    (DC Motor)

  1. Reconnect the DC motor connector.



NG
Go to step 6
OK


4.CHECK HARNESS AND CONNECTOR (DC MOTOR - ECM)

  1. Disconnect the DC motor 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
    C141-1 (M-) - C93-7 (M-)
    		Always
    		Below 1 Ω
    C141-2 (M+) - C93-6 (M+)
    		Always
    		Below 1 Ω
    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    C141-1 (M-) or C93-7 (M-) - Body ground
    		Always
    		10 kΩ or higher
    C141-2 (M+) or C93-6 (M+) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the DC motor connector.

  1. Reconnect the ECM connector.



NG
Go to step 7
OK


5.REPLACE ECM

  1. Replace the ECM (LandCruiser RM0000013Z002CX.html).



NEXT
Go to step 8

6.REPLACE TURBOCHARGER SUB-ASSEMBLY

  1. Replace the turbocharger sub-assembly (LandCruiser RM000002S6F00ZX.html).



NEXT
Go to step 8

7.REPAIR OR REPLACE HARNESS OR CONNECTOR

  1. Repair or replace the harness or connector.


NEXT


8.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (LandCruiser RM000000PDK1DJX.html).

  1. Turn the ignition switch off.

  1. Turn the ignition switch to ON for 5 seconds or more.

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

  1. Confirm that the DTC is not output again.


NEXT

END