1Kd-Ftv Engine Control. Ecd System (For I-Art) Engine Difficult To Start Or Stalling

Mass Air Flow Meter
Main fault		Decrease in performance (foreign matter is stuck)
Symptoms		Lack of power, black smoke
Data List		MAF
HINT: The maximum fuel injection volume is controlled according to the output from the mass air flow meter.

Intake System
Symptom and Corresponding Main Fault		Lack of power (no black smoke) due to air filter blockage or crushed or leaking air duct Black smoke (no lack of power) due to leakage between the turbo and intake manifold
Data List		MAP

Turbocharger System
Main fault		Air leak in the turbocharged air passage ECM not operating well Turbocharger (turbine, bearing)
Symptoms		Lack of power (when vehicle is starting, under heavy load) (Black smoke is not emitted when racing while vehicle is stopped)
Data List		MAP With the ignition switch ON or during idling, MAP = atmospheric pressure (standard atmospheric pressure = 101 kPa). When the engine speed is about 1500 rpm or more, the turbocharger starts to take effect and MAP becomes higher than atmospheric pressure. Atmospheric pressure decreases by 1 kPa each time elevation increases by 100 m, and is also affected by the current weather conditions.

Exhaust System
Main fault		Blockage
Symptoms		Lack of power (high engine speed, under heavy load)

Glow System
Main fault		Glow system malfunction
Symptoms		Difficult to start, rough idle, knocking, white smoke (when cold)
Data List		Check the glow plug indicator light
Diagnostic Point		Measure the resistance of the glow plug

Battery
Main fault		Battery is depleted
Symptoms		Difficult to start (cannot crank, crank speed is low), horn is quiet
Data List		Battery Voltage When cranking, battery voltage is below 5 V.

Engine - 1
Main fault		Damaged, seized up
Symptoms		Cannot crank, crank speed is low, strange noise

Engine - 2
Main fault		Loss of compression
Symptoms		Rough idle (lack of power always)
Data List		Engine Speed of Cyl When cranking during the "Check the Cylinder Compression" Active Test, if there is a high speed cylinder, approx. 100 rpm more than the other cylinders, that cylinder may lose compression. Injection Feedback Val When an Injector Feedback Val is more than 3 mm³/st, there may be a malfunction in the corresponding cylinder.

Start System
Main fault		Starter system malfunction
Symptoms		Difficult to start
Data List		Starter Signal Ignition switch (STA) output: ON: Starter is operating OFF: Starter is not operating

Diesel Injection

Fuel Supply Pump
Main fault		-
Symptoms		Difficult to start, engine stalling, rough idle, lack of power
Data List		Fuel Press, Target Common Rail Pressure, Target Pump SCV Current Fuel Press is within 5000 kPa of Target Common Rail Pressure during idling with the engine warmed up (engine coolant temperature is higher than 70°C (158°F)). If the fuel pressure is 20000 kPa below the target pressure, then a lack of power will be felt. If the fuel pressure is below 25000 kPa, then idling will be rough. HINT: The fuel pressure changes at engine start, but is approx. 25000 kPa at engine start after the engine is warmed up. When Target Pump SCV Current is 3000 mA or higher, the suction control valve has a tendency to become stuck.
Diagnostic Trouble Code		Even if Fuel Press is below Target Common Rail Pressure, a DTC will not be stored.

Fuel Filter
Main fault		Blockage
Symptoms		Difficult to start, engine stalling, rough idle, lack of power
Data List		Fuel Press, Target Common Rail Pressure Fuel Press is within 5000 kPa of Target Common Rail Pressure during idling with the engine warmed up (engine coolant temperature is higher than 70°C (158°F)). If the fuel pressure is 20000 kPa below the target pressure, then a lack of power will be felt. If the fuel pressure is below 25000 kPa, then idling will be rough. HINT: The fuel pressure changes at engine start, but is approx. 25000 kPa at engine start after the engine is warmed up.
Diagnostic Trouble Code		Even if Fuel Press is below Target Common Rail Pressure, a DTC will not be stored.

Injector Assembly
Main fault		Blockage
Symptoms		Rough idle, lack of power, black smoke, white smoke, knocking
Data List		Injection Feedback Val When an Injector Feedback Val is more than 3 mm³/st, there may be a malfunction in the corresponding cylinder. This value can be read after idling for 1 minute.

Pressure Discharge Valve
Main fault		Does not completely close
Symptoms		Difficult to start, engine stall, rough idle, lack of power

Injector Driver
Main fault		Circuit fault: The injector assembly does not open.
Symptoms		Difficult to start, rough idle, lack of power, black smoke, white smoke, knocking
Data List		Same as injector assembly
Diagnostic Trouble Code		When the injector driver has a fault, some DTCs may be stored.

Fuel Pressure Sensor (built into injector assembly)
Main fault		Open circuit, decrease in performance (foreign matter is stuck)
Symptoms		Difficult to start, rough idle, engine stall, lack of power
Data List		Fuel Press, Target Common Rail Pressure Slowly raise the engine speed from idling to 3000 rpm with the vehicle stopped and check that Fuel Press and Common Rail Pres Sens 2 follow Target Common Rail Pressure. If the fuel pressure sensor malfunctions, the actual fuel pressure may deviate from the target fuel pressure (either Fuel Press or Common Rail Pres Sens 2 decreases to a value less than Target Common Rail Pressure).
Diagnostic Trouble Code		When the fuel pressure sensor has a fault, some DTCs may be stored.

Irregular Fuel
Main fault		-
Symptoms		Difficult to start, rough idle (especially when cold)

Diesel EGR

EGR System
Main fault		Does not move smoothly Does not close completely
Symptoms		Rough idle EGR valve stuck closed: A loud turbocharger sound. EGR valve stuck open: Difficult to start (does not stall), black smoke, lack of power (if there is an excess in the quantity of EGR and there is a heavy load, when the vehicle starts moving, a lack of power will be felt).
Data List		Actual EGR Valve Pos., Target EGR Position Generally, Actual EGR Valve Pos. = Target EGR Position +/-5% (fully closed: 0%, fully open: 100%). Using the EGR valve Active Test, check whether Actual EGR Valve Pos. follows Target EGR Position (the engine coolant temperature and intake air temperature should be considered when a malfunction occurs). EGR valve is fully closed when the ignition switch is turned to ON (engine stopped). EGR valve opens to the halfway point at idling after the engine is warmed up. EGR Close Lrn. Val., EGR Close Lrn. Status When leaving the vehicle idling, when EGR Close Lrn. Status is OK, the normal range of EGR Close Lrn. Val. is 0 to 1 V. In cases when EGR Close Lrn. Status. is NG or EGR Close Lrn. Val. is out of the normal range (0 to 1 V), it is possible that the EGR valve cannot completely close.

Diesel Throttle

Diesel Throttle System
Main fault		Stuck, does not move smoothly
Symptoms		Stuck closed: Lack of power, difficult to start, rough idle, engine stall, black smoke. These may occur when stuck almost fully closed. Stuck open: Turbocharger sound increases. When the engine is stopped, engine vibrations may occur.
Data List		Actual Throttle Position 0%: Fully open 100%: Fully closed When the ignition switch is ON (the engine is stopped), the diesel throttle is fully open. When idling, the diesel throttle is at the halfway point. When the ignition switch is turned from ON to off, the throttle is fully closed temporarily.

Data List Related to Starting Trouble

MAP
MAF
Intake Air
Coolant Temp
Battery Voltage
Starter Signal
Engine Speed of Cyl #1 (to #4)
Target Common Rail Pressure
Fuel Press
Target Pump SCV Current
Injection Feedback Val #1 (to #4)
Injection Volume
Actual Throttle Position
Target EGR Position
Actual EGR Valve Pos.
EGR Close Lrn. Status
EGR Close Lrn. Val.

INSPECTION PROCEDURE

Explanation of Symptom

Starting Trouble

For good starting it is essential to have:

Sufficient cranking speed.
Properly operating engine preheating system.
Good quality fuel.

The fuel is ignited by the heat which is generated by compression pressure.
With problems such as a depleted battery, the crankshaft speed can become low, or if the engine compression is poor due to leakage, the compression pressure will not rise and there will be difficulty starting.
When the engine is cold, even if there is compression heat, it will escape from the combustion chamber. For this reason, when the engine is started when it is cold, the glow plugs heat the compressed air.
Also, after starting the engine, by charging the glow plugs for a fixed time set according to the engine coolant temperature, diesel knocking and white smoke are prevented. The quantity of fuel injected is determined by the fuel pressure and also the amount of time the injector assembly is open.

Trouble Area Chart According to Problem Cause

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Engine Control.Ecd System (For Dpf).Ecd System (For I-Art) Engine Difficult To Start Or Stalling

NOTICE:

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

HINT:

Specified values in the following troubleshooting flowchart are for reference only. Variations in the Data List values may occur depending on the measuring conditions or the vehicle age. Do not assume the vehicle is normal when the Data List outputs standard values. There may be concealed factors of the malfunction.

1.CHECK ENGINE CRANKING CONDITION

Check the engine cranking condition.

Result
Result	Proceed to
Cranking is OK.	A
Low cranking speed. HINT: When cranking speed is low, especially when the temperature is low, check if the engine oil grade matches the recommendation.	B
Does not crank at all.	C

CHECK BATTERY CONDITION (HILUX_TGN26 RM0000013Y001JX_01_0001.html)

Go to step 36

A

2.READ ALL OUTPUT DTCS

Connect the GTS to the DLC3.

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

Enter the following menus: Utility / All Codes.

Result
Result
Proceed to
No DTC is output
A
Engine related DTCs are output
B
HINT:
If only DTC P1604 is output, proceed to step 3.

GO TO RELATED DTC (HILUX_TGN26 RM0000031HW04UX.html)

A

3.TAKE SNAPSHOT DURING STARTING AND IDLING (PROCEDURE 3)

Connect the GTS to the DLC3.

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

Enter the following menus: Powertrain / Engine / Data List / All Data.

Take a snapshot when idling with no load after the engine is warmed up and when starting trouble is occurring.
HINT:
1. A snapshot can be used to compare vehicle data from the time of the malfunction to normal data and is very useful for troubleshooting. The data in the illustration below is that of a normal vehicle, but as the data varies between individual vehicles, this data should only be used for reference.
2. When there is trouble starting with a cold engine, take the snapshot when the engine is cold. Then warm up the engine (engine coolant temperature is 70°C (158°F) or higher) and after idling the vehicle for 1 minute (A/C off, electrical load off), take a snapshot of the data for 15 seconds while idling.
3. Take a snapshot when the problem is occurring, such as when the engine is cold. However, if the problem does not reoccur, it is acceptable to only take a snapshot after the engine is warmed up and when the engine is started.

NEXT

4.CHECK SNAPSHOT (FUEL PRESS)

Check Fuel Press in the snapshot taken in procedure 3 when the engine was started.

Result
Result	Proceed to
At the point in the illustration labeled "a", Fuel Press is less than 10000 kPa from the value of Fuel Press when cranking started	A
At the point in the illustration labeled "c", Fuel Press is below Target Common Rail Pressure by 15000 kPa or more	B
Fuel Press increases to a value that is higher than Target Common Rail Pressure immediately after cranking, and, at the point in the illustration labeled "d", Fuel Press is higher than Target Common Rail Pressure	C
Except above	D

HINT:

Even if Fuel Press is temporarily higher than Target Common Rail Pressure, as shown at the point in the illustration labeled "b", the fuel supply pump is normal.
Fuel pressure is about 25000 to 35000 kPa when the engine is cranking and the engine coolant temperature is 0°C (32°F) or higher.
Fuel pressure increases rapidly during cranking.

Go to step 14

Go to step 28

Go to step 18

A

5.CHECK IF FUEL IS BEING SUPPLIED TO FUEL SUPPLY PUMP

Disconnect the inlet hose from the Fuel Supply Pump.

Operate the priming pump and check that fuel is being supplied to the Fuel Supply Pump.
OK:
Fuel is properly supplied to the fuel supply pump when the priming pump is operated.
HINT:
1. When there is a lack of fuel, fuel pressure drops.
2. Inspect for Fuel Filter clogging (check that the Fuel Filter is not clogged).

Reconnect the inlet hose.

Go to step 12

OK

6.CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)

Disconnect the suction control valve connector.

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C5-1 - C163-23 (PCV+)	Always	Below 1 Ω
C5-2 - C163-12 (PCV-)	Always	Below 1 Ω
C5-1 or C163-23 (PCV+) - Body ground	Always	10 kΩ or higher
C5-2 or C163-12 (PCV-) - Body ground	Always	10 kΩ or higher

Reconnect the suction control valve connector.

Reconnect the ECM connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.REPLACE FUEL SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)

Replace the fuel supply pump assembly (HILUX_TGN26 RM0000014FO028X.html).

NEXT

8.BLEED AIR FROM FUEL SYSTEM

Bleed the air from the fuel system (HILUX_TGN26 RM000002SY802GX_01_0002.html).

NEXT

9.PERFORM SUPPLY PUMP INITIALIZATION

Perform supply pump initialization (HILUX_TGN26 RM000000TIN058X.html).

NEXT

10.READ VALUE USING GTS (FUEL PRESS)

Connect the GTS to the DLC3.

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

Enter the following menus: Powertrain / Engine / Data List / Fuel Press.

Start the engine.

Read the Fuel Press values while cranking and idling the engine.

Result
Result
Proceed to
The engine cannot be started or the engine can be started but Fuel Press is below 20000 kPa 2 seconds after the starter signal changes from OFF to ON
B
Except above
A

END

B

11.INSPECT INJECTOR ASSEMBLY (INSPECTION FOR VALVE CLOSING PROBLEM)

Remove the glow plug assembly for all the cylinders (HILUX_TGN26 RM000000JIT00TX.html).

Visually check if there is fuel on the glow plugs.
HINT:
1. If there is fuel on a glow plug, fuel may be leaking from an injector assembly.
2. After replacing an injector assembly, make sure that the common rail pressure (fuel pressure) is within 5000 kPa of the target fuel pressure while cranking the engine.
3. If there is fuel on a glow plug, fuel may have mixed with the engine oil. Check the engine oil amount and whether the engine oil smells of diesel fuel. If the oil level is above the full line or the engine oil smells of diesel fuel, replace the engine oil.

Install the glow plug assembly (HILUX_TGN26 RM000000JIQ00UX.html).

Go to step 24

12.CHECK AND REPAIR OR REPLACE CLOGGED FUEL PIPE (INCLUDING FROZEN FUEL) (FUEL TANK - FUEL SUPPLY PUMP)

Check and repair or replace the clogged fuel pipe.

NEXT

13.BLEED AIR FROM FUEL SYSTEM

Bleed the air from the fuel system (HILUX_TGN26 RM000002SY802GX_01_0002.html).

Go to step 27

14.READ VALUE USING GTS (FUEL PRESS)

Check Fuel Press in the snapshot taken in procedure 3 when the engine was warmed up.

Result
Result
Proceed to
Difference between Fuel Press and Target Common Rail Pressure is 5000 kPa (51.0 kgf/cm², 725 psi) or more
A
Except above
B

Go to step 17

A

15.REPLACE FUEL SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)

Replace the fuel supply pump assembly (HILUX_TGN26 RM0000014FO028X.html).

NEXT

16.PERFORM SUPPLY PUMP INITIALIZATION

Perform supply pump initialization (HILUX_TGN26 RM000000TIN058X.html).

NEXT

17.REPLACE INJECTOR ASSEMBLIES OF ALL CYLINDERS

Replace the injector assemblies (HILUX_TGN26 RM0000044TN00PX.html).
NOTICE:
1. When replacing the injector assembly for a cylinder, always be sure to use a new injection pipe.
2. 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.
3. 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.
4. If an injector assembly deteriorates and malfunctions, other problems such as knocking, rough idle, etc. may occur.
5. 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.

Go to step 25

18.INSPECT INJECTOR ASSEMBLY (CHECKING FOR PRESENCE OF AIR)

When the engine does not start, perform the following procedure.
1. Stop the engine and leave the vehicle for 4 hours or more.
  HINT:
  It is necessary to leave the vehicle for 4 hours or more to wait for air in the injector assembly to come out.
2. Check that the engine starts.
  OK:
  The engine starts.

When the engine starts, perform the following procedure.
1. Bleed the air from the fuel system (HILUX_TGN26 RM000002SY802GX_01_0002.html).
2. Check that the engine starts.
  OK:
  The engine starts.

Go to step 19

END

19.CHECK DATA LIST

Check Injection Feedback Val # in the snapshot taken in procedure 3 when the engine was idling.

Result
Result	Proceed to
Injection Feedback Val #1 to #4 are 3 mm³/st or less. Injection Volume is more than 12 mm³/st.	A*
Injection Feedback Val for at least one cylinder is more than +3 mm³/st HINT: There may be a malfunction in the corresponding cylinder.	B
Except above	C

HINT:

*: When this case occurs, usually symptoms may be noticeable, such as difficulty starting, lack of power.
The shift lever should be in neutral and the A/C switch and all accessory switches should be off.

Go to step 21

Go to step 30

A

20.REPLACE INJECTOR ASSEMBLIES OF ALL CYLINDERS

Replace the injector assemblies (HILUX_TGN26 RM0000044TN00PX.html).
NOTICE:
1. When replacing the injector assembly for a cylinder, always be sure to use a new injection pipe.
2. 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.
3. 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.
4. If an injector assembly deteriorates and malfunctions, other problems such as knocking, rough idle, etc. may occur.
5. 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.

Go to step 25

21.PERFORM ACTIVE TEST USING GTS (CHECK THE CYLINDER COMPRESSION)

HINT:

Use this Active Test to help determine whether a cylinder has compression loss or not.

Connect the GTS to the DLC3.

Start the engine and turn the GTS on.

Enter the following menus: Powertrain / Engine / Active Test / Check the Cylinder Compression / Data List / Compression / Engine Speed of Cyl #1 to #4.

Check the engine speed during the Active Test.

Result
Result
Proceed to
Except below
A
The values of Engine Speed Cyl #1 to #4 are within +/-10 rpm of each other.
B
HINT:
When cranking, if the speed of a cylinder is approximately 100 rpm more than the other cylinders, there is probably a complete loss of compression in that cylinder.

Go to step 23

A

22.CHECK CYLINDER COMPRESSION PRESSURE OF MALFUNCTIONING CYLINDER

HINT:

Measure the compression of the cylinder that had a high speed during the "Check the Cylinder Compression" Active Test.

Check the cylinder compression pressure (HILUX_TGN26 RM000001473021X_01_0002.html).

CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION

OK

23.CHECK SNAPSHOT (INJECTOR LEAKING COUNT #1 TO #4, I-ART LEARNING STATUS HISTORY #1 TO #4)

Check Injector Leaking Count #1 to #4 and i-ART Learning Status History #1 to #4 in the snapshot taken in procedure 3 when the engine was idling.

Record the value displayed for Injector Leaking Count #1 to #4 and i-ART Learning Status History #1 to #4.

NEXT

24.REPLACE INJECTOR ASSEMBLY OF MALFUNCTIONING CYLINDER

NOTICE:

Replace the injector assembly of the cylinder which displays a value of 3.0 mm³/st or higher for Injection Feedback Val #1 to #4 in step 19.
Only replace the injector assembly for the cylinder which displays an Injector Leaking Count #1 to #4 value of 1 or more, or i-ART Learning Status History #1 to #4 value of 1 Trip or more.
If Injector Leaking Count #1 to #4 and i-ART Learning Status History #1 to #4 both display 0, only replace the injector assembly for the cylinder which was determined to be malfunctioning using Injection Feedback Val #1 to #4.

HINT:

It can be determined that the injector assembly is faulty as the corresponding cylinder is malfunctioning, but has no compression loss.

Replace the injector assembly (HILUX_TGN26 RM0000044TN00PX.html).
NOTICE:
1. When replacing the injector assembly for a cylinder, always be sure to use a new injection pipe.
2. 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.
3. 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.
4. If an injector assembly deteriorates and malfunctions, other problems such as knocking, rough idle, etc. may occur.
5. 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

25.CLEAN FUEL FILTER CASE AND REPLACE FUEL FILTER

Clean the fuel filter case and replace the fuel filter.
HINT:
Be sure to clean the inside of the fuel filter case as the fuel injectors may not operate properly if the fuel filter is installed with foreign matter remaining inside the fuel filter case.

NEXT

26.BLEED AIR FROM FUEL SYSTEM

Bleed the air from the fuel system (HILUX_TGN26 RM000002SY802GX_01_0002.html).

NEXT

27.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

END

28.INSPECT INJECTOR DRIVER

Even in cases where DTC P062D is not stored even though the engine cannot be started, perform the DTC P062D (No. 1 Fuel Injector Driver Circuit Performance) troubleshooting procedure (HILUX_TGN26 RM00000187V063X.html).
When troubleshooting the injector driver (EDU) circuit, the source of the malfunction is likely to be in one of the following areas, so be sure to inspect these areas carefully.
1. Injector driver (EDU) system power source circuit
2. Injector assembly circuit
3. Injector driver (EDU)
4. ECM
HINT:
1. When the engine cannot be started due to a malfunction in the injector driver (EDU) circuit, once the DTCs are cleared, the system cannot store DTC P062D even if it is confirmed that the engine cannot be started when trying to reproduce the problem symptoms.
  As DTC P062D cannot be stored when starting the engine, fuel injection signals are output by the ECM, but fuel is not actually injected. Therefore, an excessive amount of fuel is supplied to the common rail by the fuel supply pump assembly, and as a result, the fuel pressure is higher than the target common rail pressure in the data recorded at the time the engine was having trouble starting.
2. If the problem cannot be determined even after performing the DTC P062D (No. 1 Fuel Injector Driver Circuit Performance) troubleshooting procedure and the fuel pressure is higher than the target common rail pressure when attempting to start the engine, proceed to the next step.
3. Perform the troubleshooting procedure for DTC P062D and proceed to the diagnostic flow situations where the engine does not start.
Result
Result
Proceed to
Injector driver (EDU) circuit is normal
A
Injector driver (EDU) circuit is abnormal
B

REPAIR OR REPLACE MALFUNCTIONING PARTS

A

29.INSPECT INJECTOR ASSEMBLY (CHECKING FOR PRESENCE OF AIR)

When the engine does not start, perform the following procedure.
1. Stop the engine and leave the vehicle for 4 hours or more.
  HINT:
  It is necessary to leave the vehicle for 4 hours or more to wait for air in the injector assembly to come out.
2. Confirm the engine starts.

When the engine starts, perform the following procedure.
1. Bleed the air from the fuel system (HILUX_TGN26 RM000002SY802GX_01_0002.html).
2. Confirm the engine starts.

Go to step 40

30.CHECK SNAPSHOT (INJECTOR LEAKING COUNT #1 TO #4, I-ART LEARNING STATUS HISTORY #1 TO #4)

Check Injector Leaking Count #1 to #4 and i-ART Learning Status History #1 to #4 in the snapshot taken in procedure 3 when the engine was idling.

Result
Result	Proceed to
The value for Injector Leaking Count #1 to #4 does not change from 0 The value for i-ART Learning Status History #1 to #4 does not change from 0 Trip	A
The value for Injector Leaking Count #1 to #4 displays 1 or more The value for i-ART Learning Status History #1 to #4 displays 1 Trip or more	B

Go to step 32

B

31.REPLACE INJECTOR ASSEMBLY OF MALFUNCTIONING CYLINDER

NOTICE:

Only replace the injector assembly for the cylinder which displays an Injector Leaking Count #1 to #4 value of 1 or more, or i-ART Learning Status History #1 to #4 value of 1 Trip or more.

Replace the injector assembly (HILUX_TGN26 RM0000044TN00PX.html).

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.

Go to step 25

32.CHECK TEMPERATURE WHEN STARTING TROUBLE OCCURS

Check the temperature when starting trouble occurs.

Result
Result	Proceed to
Difficult to start only for cold engine.	A
Difficult to start both for cold and warmed up engine.	B

Go to step 35

A

33.READ VALUE USING ENGINE COOLANT TEMPERATURE SENSOR (COOLANT TEMP)

Connect the GTS to the DLC3.

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

Enter the following menus: Powertrain / Engine / Data List / All Data / Coolant Temp.

Read the value displayed on the GTS.
OK:
Coolant Temp is not high when the engine is cold, and not low after the engine is warmed up.

INSPECT ENGINE COOLANT TEMPERATURE SENSOR (HILUX_TGN26 RM0000013Z8017X.html)

OK

34.INSPECT GLOW PLUG (RESISTANCE)

Inspect the glow plug (HILUX_TGN26 RM0000044ZK009X_01_0001.html).

REPLACE GLOW PLUG (HILUX_TGN26 RM000000JIT00TX.html)

OK

35.CHECK FUEL QUALITY

Check that only diesel fuel is being used.

Check that the fuel does not contain any impurities.

Go to step 40

36.READ OUTPUT DTC (RELATED TO ENGINE)

Connect the GTS to the DLC3.

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

Enter the following menus: Powertrain / Engine / DTC.

Read the DTCs.

Result
Result
Proceed to
No DTC is output
A
Engine related DTCs are output
B

GO TO RELATED DTC (HILUX_TGN26 RM0000031HW04UX.html)

A

37.CHECK COMMUNICATION BETWEEN GTS AND ECM

Connect the GTS to the DLC3.

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

Check if the normal starting screen appears (check whether communication with the ECM is possible).
HINT:
Use a GTS that is able to communicate with other vehicles.
OK:
Communication is possible (vehicle can be recognized).

Result
Result
Proceed to
NG
A
OK (for Manual transaxle)
B
OK (for Automatic transmission)
C

CHECK VC OUTPUT CIRCUIT (HILUX_TGN26 RM000001D6V0OQX.html)

Go to step 39

C

38.READ VALUE USING GTS (NEUTRAL POSITION SW SIGNAL)

Connect the GTS to the DLC3.

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

Enter the following menus: Powertrain / Engine / Data List / Primary / Neutral Position SW Signal.

Read the value displayed on the GTS.

OK:

Tester Display
Condition
Specified Condition
Neutral Position SW Signal
Shift lever in neutral
ON

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (HILUX_TGN26 RM000002BKX031X.html)

OK

39.CHECK STARTING SYSTEM

Inspect the starting system.
HINT:
Be sure to inspect the following areas:
1. Starter relay
2. Starter
3. Immobiliser system

NEXT

40.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

END

Result	Proceed to
No DTC is output	A
Engine related DTCs are output	B

Result	Proceed to
The engine cannot be started or the engine can be started but Fuel Press is below 20000 kPa 2 seconds after the starter signal changes from OFF to ON	B
Except above	A

Result	Proceed to
Difference between Fuel Press and Target Common Rail Pressure is 5000 kPa (51.0 kgf/cm², 725 psi) or more	A
Except above	B

Result	Proceed to
Except below	A
The values of Engine Speed Cyl #1 to #4 are within +/-10 rpm of each other.	B

Result	Proceed to
Injector driver (EDU) circuit is normal	A
Injector driver (EDU) circuit is abnormal	B

Result	Proceed to
NG	A
OK (for Manual transaxle)	B
OK (for Automatic transmission)	C

Tester Display	Condition	Specified Condition
Neutral Position SW Signal	Shift lever in neutral	ON