1Kd-Ftv Engine Control. Dtc P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

1Kd-Ftv Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

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 sub-assembly 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 sub-assembly. 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): The DC motor duty ratio exceeds the threshold for 0.5 seconds for the specified number of times (in terms of time, this amounts to 100 seconds or more). DC motor current is 2.2 A or higher for 5 seconds or more.	Open or short in DC motor (turbocharger sub-assembly) circuit DC motor (turbocharger sub-assembly) 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	The DC motor duty ratio is 80% or more and the motor current is 0.5 A or less for 3 seconds or more (1 trip detection logic).	Open in DC motor (turbocharger sub-assembly) circuit DC motor (turbocharger sub-assembly) 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 (0.4 seconds or more) (1 trip detection logic).	Short in DC motor (turbocharger sub-assembly) circuit DC motor (turbocharger sub-assembly) Turbocharger nozzle vane is stuck or movement is irregular

HINT:

If DTC P0046, P0047 and/or P0048 is stored due to the nozzle vane being stuck closed, the following symptom may appear:

Vehicle surge when driving with full load

If DTC P0046, P0047 and/or P0048 is stored due to the nozzle vane being stuck open, the following symptoms may appear:

Lack of power
Vehicle surge or hesitation under light or medium load

WIRING DIAGRAM

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Engine Control.Ecd System (For Dpf).
Dtc
P0046 Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance

INSPECTION PROCEDURE

NOTICE:

After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK05AX.html) and initialization (HILUX_TGN26 RM000000TIN058X.html).

HINT:

Read freeze frame data using the GTS. 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)

Connect the GTS to the DLC3.

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

Enter the following menus: Powertrain / Engine / Trouble Codes.

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.

Result
Result	Proceed to
P0046, P0047 and/or P0048 is output	A
P0046, P0047 and/or P0048 and other DTCs are output	B

GO TO DTC CHART (HILUX_TGN26 RM0000031HW032X.html)

A

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

Inspect the turbocharger sub-assembly (HILUX_TGN26 RM000001A3W02JX_01_0010.html).

CHECK FOR INTERMITTENT PROBLEMS (HILUX_TGN26 RM000000PDQ0TRX.html)

NG

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

Disconnect the DC motor connector.

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)

Text in Illustration
*a	Component without harness connected (DC Motor)

Reconnect the DC motor connector.

Go to step 6

OK

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

Disconnect the DC motor connector.

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C41-1 (M-) - C164-14 (M-)	Always	Below 1 Ω
C41-2 (M+) - C164-15 (M+)	Always	Below 1 Ω
C41-1 (M-) or C164-14 (M-) - Body ground	Always	10 kΩ or higher
C41-2 (M+) or C164-15 (M+) - Body ground	Always	10 kΩ or higher