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 list below is that of a normal vehicle, but as the data varies between individual vehicles, this data should only be used for reference.

Check the Data List at idling and at 4000 rpm with no load after the engine is warmed up.

NEXT

2.READ VALUE USING GTS (MAP AND MAF)

Check MAP and MAF in the snapshot taken in procedure 1 when the engine was running at 4000 rpm with no load.

Result
Result	Proceed to
MAP is below 90 kPa*1	A
MAP is 105 kPa or more and MAF is 84 gm/sec or more*2	B
Except above*3	C

HINT:

The above values were measured under standard atmospheric pressure. The values are influenced by elevation, weather conditions, etc.

Standard atmospheric pressure is 101 kPa (1.0 kgf/cm², 15 psi). For every 100 m (328 ft.) increase in elevation, pressure drops by 1 kPa (0.01 kgf/cm², 0.1 psi). This varies by weather.

*1: There may be a problem in the turbocharger system.

*2: There may be a problem in the fuel system or intake system.

*3: There may be a problem in intake system or a problem with the EGR valve assembly (valve stuck open or valve does not close).

Go to step 19

Go to step 11

A

3.READ VALUE USING GTS (MAP AND ATMOSPHERE PRESSURE)

Connect the GTS to the DLC3.

Start the engine and turn the GTS on.

Enter the following menus: Engine and ECT / Data List / MAP and Atmosphere Pressure.

Compare MAP and Atmosphere Pressure when the engine switch is on (IG) (do not start the engine).

Standard:
Difference between MAP and Atmosphere Pressure is less than 8 kPa.

HINT:

If MAP and Atmosphere Pressure have the same value, both are normal. If there is a difference of 10 kPa or more, compare the values to the atmospheric pressure for that day. The sensor whose deviation is the greatest is malfunctioning.

Standard atmospheric pressure is 101 kPa (1.0 kgf/cm², 15 psi). For every 100 m (328 ft.) increase in elevation, pressure drops by 1 kPa (0.01 kgf/cm², 0.1 psi). This varies by weather.

Result
Result	Proceed to
MAP and Atmosphere Pressure have same value	A
MAP is different from actual atmospheric pressure	B
Atmosphere Pressure is different from actual atmospheric pressure	C

Go to step 7

Go to step 8

A

4.CHECK AIR INTAKE SYSTEM

Check for air leaks and blockages between the air cleaner case and turbocharger sub-assembly, and between the turbocharger sub-assembly and intake manifold.

Result
Result	Proceed to
No leaks or blockages in the intake system	A
Leaks and/or blockages exist in the intake system	B

HINT:

Inspect the air intake system, especially hoses and pipes between the air cleaner and turbocharger sub-assembly.

Check for abnormal disconnections, pipe and hose squashing, and any damage in the intake system.

Using your hand, check whether the pipes and hoses in the intake system are securely connected.

By applying soapy water and revving up the engine, air leaks from the intake system can be checked by checking for bubbles.

Make sure that the hose between the manifold absolute pressure sensor and intake manifold is not loose or disconnected.

Check for any modifications in the intake system made by the user.

Go to step 9

A

5.INSPECT TURBOCHARGER SUB-ASSEMBLY

Inspect the turbocharger sub-assembly (for bank 1 or bank 2) ().

Go to step 10

OK

6.CHECK FOR INTERMITTENT PROBLEMS

Check for intermittent problems ().

Go to step 19

7.REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

Replace the manifold absolute pressure sensor.

Go to step 19

8.REPLACE ECM

Replace the ECM ().

Go to step 19

9.REPAIR OR REPLACE AIR INTAKE SYSTEM

Repair or replace the malfunctioning part in the air intake system.

Go to step 19

10.REPLACE TURBOCHARGER SUB-ASSEMBLY

Replace the turbocharger sub-assembly (for bank 1) ().

Replace the turbocharger sub-assembly (for bank 2) ().

Go to step 19

11.CHECK AIR INTAKE SYSTEM

Check for air leaks and blockages between the air cleaner case and turbocharger sub-assembly, and between the turbocharger sub-assembly and intake manifold.

Result
Result	Proceed to
No leaks or blockages in the intake system	A
Leaks and/or blockages exist in the intake system	B

HINT:

Inspect the air intake system, especially hoses and pipes between the air cleaner and turbocharger sub-assembly.

Check for abnormal disconnections, pipe and hose squashing, and any damage in the intake system.

Using your hand, check whether the pipes and hoses in the intake system are securely connected.

By applying soapy water and revving up the engine, air leaks from the intake system can be checked by checking for bubbles.

Make sure that the hose between the manifold absolute pressure sensor and intake manifold is not loose or disconnected.

Check for any modifications in the intake system made by the user.

Go to step 17

A

12.INSPECT EGR VALVE ASSEMBLY

Connect the GTS to the DLC3.

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

Enter the following menus: Engine and ECT / Active Test / Control the EGR Step Position or Control the EGR Step Position #2.

While continuously changing the Active Test value to 0, 30, 60, 90, 60, 30 and 0%, check that Actual EGR Valve Pos or Actual EGR Valve Pos #2 smoothly changes to the set opening lift amount.

OK:
Value smoothly changes to within +/- 10% of set opening lift amount.

HINT:

EGR valve closed: 0%.

EGR valve open: 95.2%.

Next, after the engine is warmed up, stop the engine and wait for 15 seconds. After that, start the engine again and idle it for 30 seconds. Then stop the engine and wait for 15 seconds. After starting the engine again, read the Data List values while idling.

Enter the following menus: Data List / EGR Close Lrn. Val. and EGR Close Lrn. Val. #2.

Read the values.

Standard:
3.5 to 4.5 V

Go to step 15

OK

13.PERFORM ACTIVE TEST USING GTS (ACTIVATE THE EGR VALVE CLOSE)

Connect the GTS to the DLC3.

Start the engine and warm it up, and make sure the A/C switch and all accessory switches are off.

Turn the engine switch off. Wait for 30 seconds, and then restart the engine.

Turn the GTS on.

Enter the following menus: Engine and ECT / Data List / MAF.

Read the MAF value displayed on the GTS while the engine is idling.

Enter the following menus: Engine and ECT / Active Test / Activate the EGR Valve Close.

Read the MAF value when the EGR valve is closed using the Active Test function.

HINT:

If idling continues for 20 minutes or more, the EGR valve target opening lift amount becomes 0% (EGR valve fully closed). As this makes diagnosis impossible, it becomes necessary to drive the vehicle or restart the engine.

Before performing the diagnosis, confirm that the EGR valve target opening lift amount is not 0%.

Result
Active Test	Result	Proceed to
Activate the EGR Valve Close: Off (Open) to On (Closed)	MAF value does not change	B
Activate the EGR Valve Close: Off (Open) to On (Closed)	MAF value changes	A

NOTICE:

As the measured values may differ from those shown below due to factors such as differences in measuring environments and changes in vehicle condition due to aging, do not use these values to determine whether the vehicle is malfunctioning or not.

HINT:

The problem may be a temporary one, due to the entry of deposits or foreign matter. Check that there are no deposits or foreign matter in the EGR valve assembly or mass air flow meter.

Reference:

EGR Valve Condition (Opening)	Measuring Condition	MAF (Reference)
Open (40%)	Atmosphere pressure: 101 kPa Intake air temperature: 30°C (86°F) Engine coolant temperature: 88°C (190°F)	3 to 10 gm/sec
Closed (0%)		14 to 23 gm/sec

Go to step 19

B

14.READ VALUE USING GTS (MAF)

Connect the GTS to the DLC3.

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

Enter the following menus: Engine and ECT / Data List / MAF.

With the engine switch on (IG) and engine stopped, read the value when 30 seconds has elapsed.

Standard:
GTS Display Switch Condition Standard
MAF Engine switch on (IG) (do not start engine) Less than 0.5 gm/sec

Go to step 18

OK

15.CHECK FOR DEPOSIT (EGR VALVE ASSEMBLY)

Remove the No. 1 and No. 2 EGR valve assembly ().

Visually check the EGR valve assembly for deposits.

If there are deposits, clean the EGR valve assembly.

NOTICE:

When cleaning the EGR valve assembly, make sure the valve is completely closed.

When cleaning the EGR valve assembly, perform initialization procedure ().

Do not forcibly open the valve, as it may be damaged or deformed.

When cleaning the EGR valve assembly, use a piece of cloth soaked with cleaning solvent. Spraying the solvent directly onto these parts or soaking the parts in the solvent may damage the parts.

HINT:

If the EGR valve does not open properly or is stuck closed, the amount of intake air increases and combustion sounds and engine vibration may increase.

If the EGR valve does not close properly or is stuck open, EGR becomes excessive and combustion becomes unstable. Also, there may be a lack of power.

Reinstall the EGR valve assembly ().

NEXT

16.REPLACE EGR COOLER

Replace the EGR cooler ().

Go to step 19

17.REPAIR OR REPLACE AIR INTAKE SYSTEM

Repair or replace the malfunctioning part in the air intake system.

Go to step 19

18.REPLACE MASS AIR FLOW METER

Replace the mass air flow meter ().

HINT:

If foreign matter is stuck inside the mass air flow meter, the output characteristics of the mass air flow meter may change, resulting in a malfunction.

NEXT

19.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

END

1VD-FTV ENGINE CONTROL

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ECD SYSTEM w/ DPF

GTS Display	Switch Condition	Standard
MAF	Engine switch on (IG) (do not start engine)	Less than 0.5 gm/sec