These DTCs indicates 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 the criteria, the ECM sets 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-cycle of the DC motor in accordance with the driving condition.

If the nozzle vane is stuck closed (DC motor stuck off), the drivability may deteriorate at wide open throttle. If the nozzle vane is stuck open (DC motor stuck on), the drivability may deteriorate at intermediate throttle or the engine power may be insufficient.

Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

P0046, P004B
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Ignition switch ON for 5 seconds	Either of the following conditions are met when the motor is driving (1 trip detection logic): DC motor duty ratio is +/-100% for 1.3 seconds or more. DC motor current is 2.2 A or more for 5 seconds or more.	Open or short in DC motor (turbocharger sub-assembly) circuit Turbo motor driver DC motor (turbocharger sub-assembly) Turbocharger nozzle vane is stuck or movement is irregular

P0047, P004C
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Ignition switch ON for 1 second	Both of following conditions are met for 1 second or more when the motor is driving (1 trip detection logic): DC motor duty ratio is 100%. DC motor current is 0.5 A or less.	Open in DC motor (turbocharger sub-assembly) circuit Turbo motor driver DC Motor (turbocharger sub-assembly) Turbocharger nozzle vane is stuck or movement is irregular

P0048, P004D
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Ignition switch ON for 1 second	DC motor current is 6.5 A or more for 0.5 seconds or more when the motor is operating (1 trip detection logic).	Short in DC motor (turbocharger sub-assembly) circuit Turbo motor driver DC Motor (turbocharger sub-assembly) Turbocharger nozzle vane is stuck or movement is irregular

HINT:

If DTC P0046, P0047, P0048, P004B, P004C and/or P004D is stored, the following symptoms may appear.

Stuck closed malfunction:

Vehicle surge when driving with full load

Stuck open malfunction:

Lack of power

Vehicle surge or hesitation under light or medium load

White smoke

WIRING DIAGRAM

Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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.INSPECT TURBOCHARGER SUB-ASSEMBLY (DC MOTOR) (for Bank 1 or Bank 2)

Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the DC motor connector.

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

Standard Resistance:
for Bank 1
Tester Connection Condition Specified Condition
1 (M-) - 2 (M+) Always 1 to 100 Ω

for Bank 1
Tester Connection	Condition	Specified Condition
1 (M-) - 2 (M+)	Always	1 to 100 Ω

Standard Resistance:
for Bank 2
Tester Connection Condition Specified Condition
1 (M2-) - 2 (M2+) Always 1 to 100 Ω

for Bank 2
Tester Connection	Condition	Specified Condition
1 (M2-) - 2 (M2+)	Always	1 to 100 Ω

Go to step 6

OK

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

Disconnect the DC motor (for Bank 1) connector.

Disconnect the DC motor (for Bank 2) connector.

Disconnect the turbo motor driver connector.

Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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

Standard Resistance (Check for Open):
for Bank 1
Tester Connection Condition Specified Condition
C90-1 (M-) - A48-10 (M-) Always Below 1 Ω
C90-2 (M+) - A48-3 (M+) Always Below 1 Ω
for Bank 2
Tester Connection Condition Specified Condition
z67-1 (M2-) - A48-19 (M2-) Always Below 1 Ω
z67-2 (M2+) - A48-18 (M2+) Always Below 1 Ω

for Bank 1
Tester Connection	Condition	Specified Condition
C90-1 (M-) - A48-10 (M-)	Always	Below 1 Ω
C90-2 (M+) - A48-3 (M+)	Always	Below 1 Ω

for Bank 2
Tester Connection	Condition	Specified Condition
z67-1 (M2-) - A48-19 (M2-)	Always	Below 1 Ω
z67-2 (M2+) - A48-18 (M2+)	Always	Below 1 Ω

Standard Resistance (Check for Short):
for Bank 1
Tester Connection Condition Specified Condition
C90-1 (M-) or A48-10 (M-) - Body ground Always 10 kΩ or higher
C90-2 (M+) or A48-3 (M+) - Body ground Always 10 kΩ or higher
for Bank 2
Tester Connection Condition Specified Condition
z67-1 (M2-) or A48-19 (M2-) - Body ground Always 10 kΩ or higher
z67-2 (M2+) or A48-18 (M2+) - Body ground Always 10 kΩ or higher

for Bank 1
Tester Connection	Condition	Specified Condition
C90-1 (M-) or A48-10 (M-) - Body ground	Always	10 kΩ or higher
C90-2 (M+) or A48-3 (M+) - Body ground	Always	10 kΩ or higher

for Bank 2
Tester Connection	Condition	Specified Condition
z67-1 (M2-) or A48-19 (M2-) - Body ground	Always	10 kΩ or higher
z67-2 (M2+) or A48-18 (M2+) - Body ground	Always	10 kΩ or higher

Go to step 7

OK

3.INSPECT TURBOCHARGER SUB - ASSEMBLY

Connect the intelligent tester to the DLC3.

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

Start the engine and warm up.

Move the shift lever to 3rd and accelerate the vehicle with the accelerator fully open.

Stop the vehicle.

Enter the following menus: Powertrain / Engine / DTC.

Read the DTCs.

Result:
Display (DTC Output) Proceed to
DTC P0046, P0047, P0048, P004B, P004C and/or P004D are output A
No DTC output B

HINT:

A snapshot can be used to compare vehicle data from the time of the malfunction to normal data and is very useful for troubleshooting.

"Target Booster Pressure" and "MAP" in the snapshot can be used to check the operation of the turbocharger. If "MAP" does not follow "Target Booster Pressure", the turbocharger nozzle vane may be stuck or the movement may be irregular.

When the engine speed is 2500 to 3000 rpm with the accelerator pedal fully depressed, "MAP" is within +/- 10 kPa^* of "Target Booster Pressure" (not immediately after beginning of acceleration).

^* If the turbocharger pressure does not reach a specified value, it cannot be determined whether the system is normal by checking whether "MAP" is within +/-10 kPa of "Target Booster Pressure".

Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

HINT:

Compare "MAP" with "Target Booster Pressure" at the point indicated by the arrow (↑) in the illustration.

Go to step 6

B

4.INSPECT TURBO MOTOR DRIVER

Connect the intelligent tester to the DLC3.

Clear the DTCs ().

Turn the engine switch off.

Remove the rear fender splash shield sub-assembly RH.

Remove the front fender liner LH.

Disconnect the turbo motor driver connector.

Reconnect the turbo motor driver connector.

Turn the engine switch on (IG) and turn the tester on.

After starting the engine, idle it for 5 seconds.

Enter the following menus: Powertrain / Engine / DTC.

Read the DTCs.

Result:
Display (DTC Output) Proceed to
DTC is output A
DTC is not output B

END

A

5.REPLACE TURBO MOTOR DRIVER

Replace the turbo motor driver ().

NOTICE:

Make sure that foreign matter does not enter the connector(s) when replacing parts.

Go to step 8

6.REPLACE TURBOCHARGER SUB-ASSEMBLY (for Bank 1 or Bank 2)

Replace the turbocharger sub-assembly (for Bank 1 or Bank 2) ().

Go to step 8

7.REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT

8.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Connect the intelligent tester to the DLC3.

Clear the DTCs ().

Turn the ignition switch off.

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

Enter the following menus: Powertrain / Engine / DTC.

Confirm that the DTC is not output again.

END

1VD-FTV ENGINE CONTROL

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ECD SYSTEM w/o DPF

Display (DTC Output)	Proceed to
DTC P0046, P0047, P0048, P004B, P004C and/or P004D are output	A
No DTC output	B

Display (DTC Output)	Proceed to
DTC is output	A
DTC is not output	B