The injector driver (EDU) delivers drive signals to fuel injectors using the DC/DC converter, which provides a high-voltage and quick-charging system.

Soon after the injector driver (EDU) receives a fuel injection command (# 1 to # 8) signal from the ECM, the injector driver (EDU) responds to the command with an injector injection confirmation (INJF, INF2) signal when the current is applied to the injector assembly.

Dtc P0201 Injector Circuit / Open - (Cylinder 1). 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

P0201 to P0208:
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Idling for 5 seconds	Open or short in injector circuit occurs a certain number of times (a maximum of approx. 0.5 seconds). (1 trip detection logic)	Open or short in injector assembly circuit Injector assembly No. 1 Injector driver (EDU) No. 2 Injector driver (EDU) ECM

P062D (No. 1), P062E (No. 2)
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Idling for 5 seconds	Inconsistency in the injection waveforms between the injector driver (EDU) and ECM while the engine is running a certain number of times (a maximum of approx. 0.5 seconds). (1 trip detection logic)	Open or short in injector driver (EDU) circuit Injector assembly No. 1 injector driver (EDU) No. 2 injector driver (EDU) ECM

MONITOR DESCRIPTION

P0201 to P0208:

The ECM compares injection command (# 1 to # 8) signals and injection confirmation (INJF, INF2) signals for each cylinder. If the ECM determines that a cylinder has a malfunction, DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207 or P0208 will be stored.

P062D, P062E:

The ECM continuously monitors both injection command (#1 to #8) signals and injection confirmation (INJF, INF2) signals. These DTCs DTC will be stored if the ECM determines that the number of #1 to #8 signals and INJF, INF2 signals are inconsistent.

The injector assemblies are grounded over a Field Effect Transistor (FET) and a serial resistor. This resistor creates a voltage drop, which is monitored by the injector driver (EDU) (injector drive circuit) in relation to the current drawn by the injector assembly. When the injector assembly current becomes too high, the voltage drop over the resistor exceeds a specified level and no INJF or INF2 signal for that cylinder is sent to the ECM.

After the engine is started, when there is no injection confirmation (INJF, INF2) signal from the injector driver (EDU) to the ECM even though the ECM sends injection command (#1 to #8) signals to the injector driver (EDU), DTC P062D or P062E is stored.

If either of these DTCs is stored, the ECM enters fail-safe mode and limits engine power or stops the engine. The fail-safe mode continues until the engine switch is turned off.

Dtc P0201 Injector Circuit / Open - (Cylinder 1). 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

WIRING DIAGRAM

Dtc P0201 Injector Circuit / Open - (Cylinder 1). 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

CAUTION:

Make sure to perform work on high voltage circuits with the engine switch off.

NOTICE:

After replacing the ECM, the new ECM needs registration () and initialization ().

After replacing an injector assembly, the ECM needs registration ().

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 ENGINE CRANKING CONDITION AND DTC OUTPUT

Connect the GTS to the DLC3.

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

Enter the following menus: Engine and ECT / Trouble Codes.

Read the DTCs.

Check the engine cranking condition.

Result
Result	Proceed to
Engine starts, but idling is rough (P062D or P062E is output)*1	A
Engine starts, but idling is rough*2	B
Engine does not start (P062D and P062E are output)*3	C
Except above	D

HINT:

*1: Only one of either DTC P062D or P062E is output and one of the injector drivers (EDU) has stopped.

*2: DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P062D and P062E are stored at this time.

*3: When the engine cannot be started due to a malfunction in the No. 1 and No. 2 injector driver (EDU), DTCs are not stored again if they are cleared. Also, the value for "Common Rail Pressure" is higher than the value for "Target Common Rail Pressure"

Go to step 6

Go to step 3

CHECK FOR INTERMITTENT PROBLEMS ()

A

2.INSPECT ECM

Dtc P0201 Injector Circuit / Open - (Cylinder 1). 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the No. 1 and No. 2 injector driver (EDU) connectors.

Check the waveform of the No. 1 or No. 2 injector driver (EDU) connector using an oscilloscope.

Tester Connection	Condition	Specified Condition
C152-5 (#10) - Body ground	Cranking	Correct waveform is as shown
C156-5 (#20) - Body ground	Cranking	Correct waveform is as shown
C156-3 (#30) - Body ground	Cranking	Correct waveform is as shown
C152-6 (#40) - Body ground	Cranking	Correct waveform is as shown
C156-6 (#50) - Body ground	Cranking	Correct waveform is as shown
C152-2 (#60) - Body ground	Cranking	Correct waveform is as shown
C152-3 (#70) - Body ground	Cranking	Correct waveform is as shown
C156-2 (#80) - Body ground	Cranking	Correct waveform is as shown

Text in Illustration
*A	for Bank 1 (No. 1 injector Driver (EDU))
*B	for Bank 2 (No. 2 injector Driver (EDU))
*a	Front view of wire harness connector (to Injector Driver (EDU))

Go to step 11

OK

3.CHECK TERMINAL VOLTAGE (POWER SOURCE)

Turn the engine switch off.

HINT:

Powering of the EDU relay may be prohibited by the fail-safe function. Therefore, turn the engine switch off to disable the failsafe function before performing this inspection.

Disconnect the No. 1 or No. 2 injector driver (EDU) connector.

Turn the engine switch on (IG).

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
C150-3 (+B) - C150-1 (GND) Engine switch on (IG) 11 to 14 V
C154-3 (+B) - C154-1 (GND) Engine switch on (IG) 11 to 14 V

Text in Illustration
*A	for Bank 1 (No. 1 injector Driver (EDU))
*B	for Bank 2 (No. 2 injector Driver (EDU))
*a	Front view of wire harness connector (to Injector Driver (EDU))

Reconnect the No. 1 or No. 2 injector driver (EDU) connector.

Go to step 16

OK

4.CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER (EDU) - ECM)

Disconnect the No. 1 or No. 2 injector driver (EDU) connector.

Disconnect the ECM connector.

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

Standard Resistance:

for LHD
Tester Connection	Condition	Specified Condition
C152-5 (#10) - C45-40 (#1)	Always	Below 1 Ω
C156-5 (#20) - C45-39 (#2)	Always	Below 1 Ω
C156-3 (#30) - C45-38 (#3)	Always	Below 1 Ω
C152-6 (#40) - C45-37 (#4)	Always	Below 1 Ω
C156-6 (#50) - C45-36 (#5)	Always	Below 1 Ω
C152-2 (#60) - C45-35 (#6)	Always	Below 1 Ω
C152-3 (#70) - C45-34 (#7)	Always	Below 1 Ω
C156-2 (#80) - C45-33 (#8)	Always	Below 1 Ω
C152-1 (INJF) - C45-61 (INJ1)	Always	Below 1 Ω
C156-1 (INF2) - C45-60 (INJ2)	Always	Below 1 Ω
C152-5 (#10) or C45-40 (#1) - Body ground	Always	10 kΩ or higher
C156-5 (#20) or C45-39 (#2) - Body ground	Always	10 kΩ or higher
C156-3 (#30) or C45-38 (#3) - Body ground	Always	10 kΩ or higher
C152-6 (#40) or C45-37 (#4) - Body ground	Always	10 kΩ or higher
C156-6 (#50) or C45-36 (#5) - Body ground	Always	10 kΩ or higher
C152-2 (#60) or C45-35 (#6) - Body ground	Always	10 kΩ or higher
C152-3 (#70) or C45-34 (#7) - Body ground	Always	10 kΩ or higher
C156-2 (#80) or C45-33 (#8) - Body ground	Always	10 kΩ or higher
C152-1 (INJF) or C45-61 (INJ1) - Body ground	Always	10 kΩ or higher
C156-1 (INF2) or C45-60 (INJ2) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
C152-5 (#10) - C46-40 (#1)	Always	Below 1 Ω
C156-5 (#20) - C46-39 (#2)	Always	Below 1 Ω
C156-3 (#30) - C46-38 (#3)	Always	Below 1 Ω
C152-6 (#40) - C46-37 (#4)	Always	Below 1 Ω
C156-6 (#50) - C46-36 (#5)	Always	Below 1 Ω
C152-2 (#60) - C46-35 (#6)	Always	Below 1 Ω
C152-3 (#70) - C46-34 (#7)	Always	Below 1 Ω
C156-2 (#80) - C46-33 (#8)	Always	Below 1 Ω
C152-1 (INJF) - C46-61 (INJ1)	Always	Below 1 Ω
C156-1 (INF2) - C46-60 (INJ2)	Always	Below 1 Ω
C152-5 (#10) or C46-40 (#1) - Body ground	Always	10 kΩ or higher
C156-5 (#20) or C46-39 (#2) - Body ground	Always	10 kΩ or higher
C156-3 (#30) or C46-38 (#3) - Body ground	Always	10 kΩ or higher
C152-6 (#40) or C46-37 (#4) - Body ground	Always	10 kΩ or higher
C156-6 (#50) or C46-36 (#5) - Body ground	Always	10 kΩ or higher
C152-2 (#60) or C46-35 (#6) - Body ground	Always	10 kΩ or higher
C152-3 (#70) or C46-34 (#7) - Body ground	Always	10 kΩ or higher
C156-2 (#80) or C46-33 (#8) - Body ground	Always	10 kΩ or higher
C152-1 (INJF) or C46-61 (INJ1) - Body ground	Always	10 kΩ or higher
C156-1 (INF2) or C46-60 (INJ2) - Body ground	Always	10 kΩ or higher

Reconnect the No. 1 or No. 2 injector driver (EDU) connector.

Reconnect the ECM connector.

Go to step 15

OK

5.REPLACE INJECTOR DRIVER (EDU)

Replace the No. 1 or No. 2 injector driver (EDU) ().

Go to step 17

6.CHECK WHETHER DTC OUTPUT RECURS

Connect the GTS to the DLC3.

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

Clear the DTCs ().

Turn the engine switch off for 30 seconds.

Start the engine and idle it for 30 seconds.

Enter the following menus: Engine and ECT / Trouble Codes.

Check the DTCs output on the GTS.

HINT:

The cylinder with the malfunctioning injector assembly can be determined based on the output DTCs.

If DTC P0201 is output, check the No. 1 injector assembly circuit.

If DTC P0202 is output, check the No. 2 injector assembly circuit.

If DTC P0203 is output, check the No. 3 injector assembly circuit.

If DTC P0204 is output, check the No. 4 injector assembly circuit.

If DTC P0205 is output, check the No. 5 injector assembly circuit.

If DTC P0206 is output, check the No. 6 injector assembly circuit.

If DTC P0207 is output, check the No. 7 injector assembly circuit.

If DTC P0208 is output, check the No. 8 injector assembly circuit.

NEXT

7.INSPECT INJECTOR DRIVER (EDU)

Disconnect the injector assembly connectors for all cylinders.

NOTICE:

If only the injector assembly connector of the malfunctioning cylinder is disconnected, the engine will start and there will be rough idling. Therefore, disconnect all injector assembly connectors before inspecting the waveform.

Check the waveform of the injector assembly connectors using an oscilloscope.

Tester Connection	Condition	Specified Condition
C141-1 - C141-2	Cranking	Voltage increases by 50 V or more
C148-1 - C148-2	Cranking	Voltage increases by 50 V or more
C142-1 - C142-2	Cranking	Voltage increases by 50 V or more
C147-1 - C147-2	Cranking	Voltage increases by 50 V or more
C143-1 - C143-2	Cranking	Voltage increases by 50 V or more
C146-1 - C146-2	Cranking	Voltage increases by 50 V or more
C144-1 - C144-2	Cranking	Voltage increases by 50 V or more
C145-1 - C145-2	Cranking	Voltage increases by 50 V or more

Text in Illustration
*a	Front view of wire harness connector (to Injector Assembly)

Go to step 13

OK

8.REPLACE INJECTOR ASSEMBLY (RELEVANT CYLINDER)

Replace the injector assembly of the cylinder relevant to the DTC ().

NOTICE:

When replacing the injector assembly for a cylinder, always be sure to use a new injection pipe.

Follow the procedure in the repair manual and temporarily install the injection pipes and nozzle leakage pipe, and then correctly position the injector assemblies. After that, tighten parts according to the torque specifications.

If the installation procedure is not performed correctly, injector assemblies may become out of position, which may cause the injector assemblies to deteriorate, resulting in malfunctions.

If an injector assembly deteriorates and malfunctions, other problems such as knocking, rough idle, etc. may occur.

If an injector assembly becomes out of position, it is possible that the seal between the injector assembly and injection pipe may become incomplete, resulting in a fuel leak.

NEXT

9.BLEED AIR FROM FUEL SYSTEM

Bleed the air from the fuel system ().

Perform PM forced regeneration ().

HINT:

When fuel lines are disconnected, air may enter the fuel lines, leading to engine starting trouble. Therefore, perform forced regeneration and bleed the air from the fuel lines.

NEXT

10.REGISTER INJECTOR COMPENSATION CODE AND PERFORM PILOT QUANTITY LEARNING

Perform the injector pilot quantity learning ().

Go to step 17

11.CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER (EDU) - ECM)

Disconnect the No. 1 or No. 2 injector driver (EDU) connector.

Disconnect the ECM connector.

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

Standard Resistance:

for LHD
Tester Connection	Condition	Specified Condition
C152-5 (#10) - C45-40 (#1)	Always	Below 1 Ω
C156-5 (#20) - C45-39 (#2)	Always	Below 1 Ω
C156-3 (#30) - C45-38 (#3)	Always	Below 1 Ω
C152-6 (#40) - C45-37 (#4)	Always	Below 1 Ω
C156-6 (#50) - C45-36 (#5)	Always	Below 1 Ω
C152-2 (#60) - C45-35 (#6)	Always	Below 1 Ω
C152-3 (#70) - C45-34 (#7)	Always	Below 1 Ω
C156-2 (#80) - C45-33 (#8)	Always	Below 1 Ω
C152-1 (INJF) - C45-61 (INJ1)	Always	Below 1 Ω
C156-1 (INF2) - C45-60 (INJ2)	Always	Below 1 Ω
C152-5 (#10) or C45-40 (#1) - Body ground	Always	10 kΩ or higher
C156-5 (#20) or C45-39 (#2) - Body ground	Always	10 kΩ or higher
C156-3 (#30) or C45-38 (#3) - Body ground	Always	10 kΩ or higher
C152-6 (#40) or C45-37 (#4) - Body ground	Always	10 kΩ or higher
C156-6 (#50) or C45-36 (#5) - Body ground	Always	10 kΩ or higher
C152-2 (#60) or C45-35 (#6) - Body ground	Always	10 kΩ or higher
C152-3 (#70) or C45-34 (#7) - Body ground	Always	10 kΩ or higher
C156-2 (#80) or C45-33 (#8) - Body ground	Always	10 kΩ or higher
C152-1 (INJF) or C45-61 (INJ1) - Body ground	Always	10 kΩ or higher
C156-1 (INF2) or C45-60 (INJ2) - Body ground	Always	10 kΩ or higher

for RHD
Tester Connection	Condition	Specified Condition
C152-5 (#10) - C46-40 (#1)	Always	Below 1 Ω
C156-5 (#20) - C46-39 (#2)	Always	Below 1 Ω
C156-3 (#30) - C46-38 (#3)	Always	Below 1 Ω
C152-6 (#40) - C46-37 (#4)	Always	Below 1 Ω
C156-6 (#50) - C46-36 (#5)	Always	Below 1 Ω
C152-2 (#60) - C46-35 (#6)	Always	Below 1 Ω
C152-3 (#70) - C46-34 (#7)	Always	Below 1 Ω
C156-2 (#80) - C46-33 (#8)	Always	Below 1 Ω
C152-1 (INJF) - C46-61 (INJ1)	Always	Below 1 Ω
C156-1 (INF2) - C46-60 (INJ2)	Always	Below 1 Ω
C152-5 (#10) or C46-40 (#1) - Body ground	Always	10 kΩ or higher
C156-5 (#20) or C46-39 (#2) - Body ground	Always	10 kΩ or higher
C156-3 (#30) or C46-38 (#3) - Body ground	Always	10 kΩ or higher
C152-6 (#40) or C46-37 (#4) - Body ground	Always	10 kΩ or higher
C156-6 (#50) or C46-36 (#5) - Body ground	Always	10 kΩ or higher
C152-2 (#60) or C46-35 (#6) - Body ground	Always	10 kΩ or higher
C152-3 (#70) or C46-34 (#7) - Body ground	Always	10 kΩ or higher
C156-2 (#80) or C46-33 (#8) - Body ground	Always	10 kΩ or higher
C152-1 (INJF) or C46-61 (INJ1) - Body ground	Always	10 kΩ or higher
C156-1 (INF2) or C46-60 (INJ2) - Body ground	Always	10 kΩ or higher

Reconnect the injector driver (EDU) connector.

Reconnect the ECM connector.

Go to step 15

OK

12.REPLACE ECM

Replace the ECM ().

Go to step 17

13.CHECK HARNESS AND CONNECTOR (INJECTOR ASSEMBLY - INJECTOR DRIVER (EDU))

Disconnect the injector assembly connectors.

Disconnect the No. 1 or No. 2 injector driver (EDU) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C141-1 - C151-6 (IJ1+)	Always	Below 1 Ω
C141-2 - C151-3 (IJ1-)	Always	Below 1 Ω
C148-1 - C155-6 (IJ2+)	Always	Below 1 Ω
C148-2 - C155-3 (IJ2-)	Always	Below 1 Ω
C142-1 - C154-4 (IJ3+)	Always	Below 1 Ω
C142-2 - C154-2 (IJ3-)	Always	Below 1 Ω
C147-1 - C151-5 (IJ4+)	Always	Below 1 Ω
C147-2 - C151-2 (IJ4-)	Always	Below 1 Ω
C143-1 - C155-5 (IJ5+)	Always	Below 1 Ω
C143-2 - C155-2 (IJ5-)	Always	Below 1 Ω
C146-1 - C151-4 (IJ6+)	Always	Below 1 Ω
C146-2 - C151-1 (IJ6-)	Always	Below 1 Ω
C144-1 - C150-4 (IJ7+)	Always	Below 1 Ω
C144-2 - C150-2 (IJ7-)	Always	Below 1 Ω
C145-1 - C155-4 (IJ8+)	Always	Below 1 Ω
C145-2 - C155-1 (IJ8-)	Always	Below 1 Ω
C141-1 or C151-6 (IJ1+) - Body ground	Always	10 kΩ or higher
C141-2 or C151-3 (IJ1-) - Body ground	Always	10 kΩ or higher
C148-1 or C155-6 (IJ2+) - Body ground	Always	10 kΩ or higher
C148-2 or C155-3 (IJ2-) - Body ground	Always	10 kΩ or higher
C142-1 or C154-4 (IJ3+) - Body ground	Always	10 kΩ or higher
C142-2 or C154-2 (IJ3-) - Body ground	Always	10 kΩ or higher
C147-1 or C151-5 (IJ4+) - Body ground	Always	10 kΩ or higher
C147-2 or C151-2 (IJ4-) - Body ground	Always	10 kΩ or higher
C143-1 or C155-5 (IJ5+) - Body ground	Always	10 kΩ or higher
C143-2 or C155-2 (IJ5-) - Body ground	Always	10 kΩ or higher
C146-1 or C151-4 (IJ6+) - Body ground	Always	10 kΩ or higher
C146-2 or C151-1 (IJ6-) - Body ground	Always	10 kΩ or higher
C144-1 or C150-4 (IJ7+) - Body ground	Always	10 kΩ or higher
C144-2 or C150-2 (IJ7-) - Body ground	Always	10 kΩ or higher
C145-1 or C155-4 (IJ8+) - Body ground	Always	10 kΩ or higher
C145-2 or C155-1 (IJ8-) - Body ground	Always	10 kΩ or higher

Reconnect the injector assembly connectors.

Reconnect the No. 1 or No. 2 injector driver (EDU) connector.

Go to step 15

OK

14.REPLACE INJECTOR DRIVER (EDU)

Replace the No. 1 or No. 2 injector driver (EDU) ().

Go to step 17

15.REPAIR OR REPLACE HARNESS OR CONNECTOR

Repair or replace the harness or connector.

Go to step 17

16.GO TO INJECTOR CIRCUIT

Go to injector circuit ().

NEXT

17.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Clear the DTCs ().

Turn the engine switch off and wait for 30 seconds or more.

Start the engine and idle it for 5 seconds or more.

Turn the GTS on.

Enter the following menus: Engine and ECT / Trouble Codes.

Confirm that the DTC is not output again.

END

1VD-FTV ENGINE CONTROL

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ECD SYSTEM w/ DPF

Tester Connection	Switch Condition	Specified Condition
C150-3 (+B) - C150-1 (GND)	Engine switch on (IG)	11 to 14 V
C154-3 (+B) - C154-1 (GND)	Engine switch on (IG)	11 to 14 V