1. Engine Overall 1VD-FTV Engine-Q -V -_ -W
1VD-FTV Engine
4.5-liter, V-type 8-cylinder, 32-valve DOHC, TOYOTA D-4D with turbocharged diesel engine
[1VD-FTV Engine]
4.5-liter, V-type 8-cylinder, 32-valve DOHC, TOYOTA D-4D with turbocharged diesel engine

2. Engine Overall Features -Q -V -_ -W
Rotary Solenoid Type 2 Diesel Throttles
Common-rail System
Water-cooled Type EGR Cooler
HP4 Supply Pump
(3 Plunger)
Hydraulic Lash Adjuster and Roller Rocker Arm
VN Type
2 Turbochargers
(Driven by DC Motor)
[Features of 1VD-FTV]
- Cylinder Block Stiffening Plate
- Wave Stopper Structure for Cylinder Head Gasket
- Hydraulic Lash Adjuster and Roller Rocker Arm
- Rotary Solenoid Type 2 Diesel Throttles
- Water-cooled Type EGR Cooler
- VN (Variable Nozzle-vane) Type 2 Turbochargers (Driven by DC Motor)
- Common-rail System
- HP4 Supply Pump (3 Plunger)
Water-cooled Type Fuel Cooler
HP = High Pressure
Wave Stopper Structure for Cylinder Head Gasket
Cylinder Block Stiffening Plate
Water-cooled Type Fuel Cooler

3. Engine Overall Features -Q -V -_ -W Liner Solenoid Type 2 EGR Valves
Aluminum Cylinder Head
Timing Gear and Chain
Compacted Vermicular Graphite Cast Iron Cylinder Block
Crankshaft Pulley Installation By 3 Bolts
[Features of 1VD-FTV]
- Compacted Vermicular Graphite Cast Iron Cylinder Block
- Aluminum Cylinder Head
- Crankshaft Pulley Installation By 3 Bolts
- Timing Gear and Chain
- Trochoid Type Oil Pump (2 Rotors)
- Scavenging Pump
- Element Replacement Type Oil Filter
- Liner Solenoid Type 2 EGR Valves
Element Replacement Type Oil Filter
Trochoid Type Oil Pump (2 Rotors)
Scavenging Pump

4. Dash Panel Penetration Installation for ECM
Engine Overall -Q -V -_ -W
Features
Element Replacement Type Fuel Filter
Fuel Filter Warning Switch
Dash Panel Penetration Installation for ECM
[Features of 1VD-FTV]
- Element Replacement Type Fuel Filter
- Fuel Filter Warning Switch
- Air-cooled Type Fuel Cooler under the Floor
- Dash Panel Penetration Installation for ECM
- [Dual Tank Model Only] Fuel Pump in the Fuel Tank for Fuel Transfer
Air-cooled Type Fuel Cooler under the Floor
Fuel Pump in the Fuel Tank (Dual Tank Model Only)

5. Engine Overall Specifications -Q -V -_ -W Item 1VD-FTV 1HD-FTE Model
New LAND CRUISER
LAND CRUISER
(70 Series)
Previous Model
Destination
-W, -Q, -V, Gen -Q
-W, -Q, Gen
No. of Cylinders and Arrangement
8-Cylinder,
V type 
6-Cylinder,
In-line
Valve Mechanism
32-valve, DOHC,
Chain and Gear Drive
24-valve, OHC,
Belt and Gear Drive
Displacement
cm3 (cu. in.)
4461
(272.2)
4164
(254.0)
Bore x stroke
mm (in.)
86.0 x 96.0
(3.39 x 3.78)
94.0 x 100.0
(3.70 x 3.94)
Compression Ratio
16.8 : 1
18.8 : 1
Emission Regulation -W
EUROIV,
EUROIII (Except Europe) -
EURO III
EUROIV
EURO II -V
N.A.
Gen
EUROIII or EUROII or N.A. *
[Coolant Capacity]
AT Model: 14.8 Liters (15.6 US qts, 13.0 Imp. qts)
MT Model: 15.4 Liters (16.3 US qts, 13.6 Imp. qts)
With Rear Heater Model (-W, -Q, Gen. Only): Liters (2.95 US qts, 2.46 Imp. qts)
With Viscous Heater Model (-W only): Liters (0.42 US qts, 0.35 Imp. qts)
[Oil Capacity]
Dry: 9.7 Liters (10.3 US qts, 8.5 Imp. qts)
With Oil Filter: 9.0 Liters (9.5 US qts, 7.9 Imp. qts)
Without Oil Filter: 8.0 Liters (8.5 US qts, 7.0 Imp. qts)
*: It is different depending on the countries

6. Engine Overall Specifications -Q -V -_ -W Item 1VD-FTV 1HD-FTE Model
New LAND CRUISER
LAND CRUISER
(70 Series)
Previous Model
Destination
-W, -Q, -V, Gen -Q
-W, -Q, Gen
Combustion Chamber
Direct Injection Type 
Fuel System
Common-rail Type
Distributor Type
Turbocharger
VN type
2 Turbochargers
VN Type Turbocharger
Conventional Type Turbocharger
Max.
Output
rpm -W AT
3600 -
3400
-W*, -Q
3400 MT
3400
-V, Gen
3200
3600
Max. Torque
rpm
– 2800
– 2600
– 3200
– 2200
– 3600
*: Only for -W models equipped with a pre-cleaner

7. Reference (Engine Overall)-Q
Major Difference From LAND CRUISER (VDJ70)
Item
1VD-FTV
Model
New LAND CRUISER
(VDJ200)
LAND CRUISER 70 Series
(VDJ7#)
Timing Gear
Scissors gear for idle gear
N.A.
Oil Filter
Plastic made filter cap with drain plug
Aluminum made filter cap without drain plug
Located at engine front side
Located at engine rear side
Turbocharger
2 turbochargers
1 turbocharger
Nozzle-vane is driven by DC motor
Nozzle-vane is driven by vacuum actuator
Scavenging Pump
1 Rotor
2 Rotors
Injector
Hole Diameter: mm
Hole Diameter: mm
Fuel Tank
(Dual Fuel Tank Model Only)
Fuel pump in the main tank for fuel transfer
Fuel tank select valve
Front Engine Mount
2 Electrical Hydraulic Type
Conventional Type
Cranking Hold Function
With
Diagnosis Communication
CAN
Serial

8. Engine Proper Cylinder Block-Q -V -_ -W
Cylinder Block
High strength compacted vermicular graphite cast iron is used for weight reduction
Engine Number Stamp
Front

9. Wave Stopper Structure
Engine Proper -Q -V -_ -W
Cylinder Head Gasket
Wave stopper structure is used around the cylinder bore to improve sealing performance
Wave Stopper Structure
A – A Cross Section A A

10. Engine Proper Crankshaft and Flywheel-Q -V -_ -W
Crankshaft and Flywheel
Balance weight is appropriately provided to reduce vibration
Balance Weight
(Newly added)
Balance Weight
(Newly added)
Balance weight is appropriately provided for the crankshaft and flywheel to reduce vibration.
Timing Gear
Oil Pump Drive Gear
AT Model
MT Model

11. Engine Proper Cylinder Block Stiffening Plate-Q -V -_ -W
Cylinder Block Stiffening Plate
This plate connects the bearing cap and cylinder block skirt portion to reduce noise and vibration
Front Mark
[Tightening Torque]
- Plastic Region Tightening Bolts (Inside): 35 N·m + 180°
- Plastic Region Tightening Bolts (Outside): 60 N·m + 90°
Plastic Region Tightening Bolts
Cylinder Block Stiffening Plate

12. Installation with 3 bolts
Engine Proper -Q -V -_ -W
Crankshaft Pulley
Installed by 3 bolts to reduce tightening torque
Three bolts tighten the crankshaft pulley onto the crankshaft to reduce the tightening torque and improve serviceability.
Tightening Torque: 115 N·m x3
Reference: Tightening Torque for 1HD-FTE: 430 N·m
Installation with 3 bolts
(Torque: 115 N·m x3)

13. Valve Mechanism Timing Gear and Chain-Q -V -_ -W
Timing Gear and Chain
Timing gear and chain is used to realize maintenance-free
Timing Chains
Chain Tensioner
Camshaft Timing Sprocket (RH)
Camshaft Timing Sprocket (LH)
Power Steering Vane Pump Drive Gear
Oil Jet
Timing gear and 2 timing chains are used.
Chain Tensioner
Oil Jet
Supply Pump Drive Gear (Sprocket)
Idle Gear
Crankshaft Timing Gear

14. Exhaust Camshaft Timing Gear
Valve Mechanism -Q -V -_ -W
Timing Gear and Chain
Scissors gear is used for exhaust camshaft timing gear and idle gear to reduce gear noise
Exhaust Camshaft Timing Gear
Scissors Gear
Idle Gear
Scissors Gear

15. Lubrication System Oil Pump-Q -V -_ -W
Oil Pump
Compact and high efficiency trochoid gear (2-rotor) type oil pump is used
Outlet
Driven Gear
Trochoid Gear (2-rotor)
Inlet
View from A
2-rotor type oil pump is used. A
Scavenging Pump Driven Gear
Oil Pump Drive Gear
(Crankshaft)
Oil Pump Driven Gear

16. Lubrication System Oil Filter-Q -V -_ -W
Oil Filter
Element replacement type oil filter is used
Oil Pan No.1
Oil Filter Element
Drain Bolt
Oil filter cap made by resin.
Oil Filter Cap
(Resin)

17. Engine condition when driving on slope way
Lubrication System -Q -V -_ -W
Scavenging Pump
This system is used to prevents oil from retaining in the turbocharger when driving on slope way
Engine condition when driving on slope way
[With This System]
[Without This System]
No Oil Retention
Oil Retention
Scavenging Pump
Return
When driving on slope way, the engine oil retains in the turbocharger if this system isn't equipped.
On the models with this system, the conventional oil outlet pipe for turbocharger is discontinued and scavenging pump is added to prevents oil from retaining in the turbocharger.
The scavenging pump suctions the return oil of turbocharger and sends it to the oil pan.
It securing the reliability of the engine.
Oil Outlet Pipe

18. Lubrication System Scavenging Pump-Q -V -_ -W
Scavenging Pump
Scavenging pump sucks the engine oil in the catch tank and discharge it to the oil pan
Turbocharger (LH)
Turbocharger (RH)
Scavenging Pump
Rotor
To Cylinder Head Cover
To Cylinder Head Cover
Ventilation Tube
Ventilation Tube
Air
Air
Scavenging Pump: Sucks the engine oil in catch tank and discharge it to the oil pan.
Oil Catch Tank: Separate the engine oil to air-liquid.
Oil Catch Tank
Oil Catch Tank
Oil Pan

19. Lubrication System Scavenging Pump Parts Location -Q -V -_ -W Front
Ventilation Tube
Ventilation Tube
Turbocharger
(RH (Bank1))
Oil Catch Tank
Turbocharger
(LH (Bank2))
Oil Catch Tank
Scavenging Pump

20. Scavenging Pump Driven Gear
Lubrication System -Q -V -_ -W
Scavenging Pump
Scavenging pump is driven by crankshaft
Outlet
Driven Gear
Inlet
Rotor
View from A
Scavenging pump is the trochoid gear type oil pump.
The scavenging pump (bearing portion etc.) is lubricated by rotating the scavenging pump. A
Scavenging Pump Driven Gear
Oil Pump Drive Gear
(Crankshaft)
Oil Pump Driven Gear

21. Lubrication System Scavenging Pump-Q -V -_ -W
Scavenging Pump
Oil catch tank separates the engine oil to air-liquid
Air:
Oil:
Turbocharger
Ventilation Tube
Oil Catch Tank
LH Side (Bank2)
RH Side (Bank1)

22. Reference (Lubrication System)-Q -V -_ -W
Scavenging Pump
Oil flow from oil catch tank to scavenging pump
From Oil Catch Tank (RH)
To Scavenging Pump
Front
Oil Pan No.1
From Oil Catch Tank (LH)

23. Intake and Exhaust System-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
VN (Variable Nozzle-vane) type 2 turbochargers
Intercooler
Air Cleaner
VN Type
2 Turbochargers
2 turbochargers are used for each bank.

24. Intake and Exhaust System-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
Nozzle Vane is driven by DC motor
: Intake Air
: Exhaust Gas
Variable nozzle vane type turbocharger to ensure higher effectiveness in full range.
Nozzle vane is driven by the DC motor.
Water-cooled type turbocharger
Nozzle Vane Position Sensor
DC Motor
RH Side (Bank1)
LH Side (Bank2)

25. Intake and Exhaust System-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
Construction (RH Side (Bank1))
Exhaust Gas
Nozzle Vane
Turbine Wheel
Intake Air
DC Motor
Linkage
Nozzle Vane Position Sensor
RH Side (Bank1)

26. Intake and Exhaust System-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
Nozzle angle changes to increase exhaust gas speed
VN turbo can be effected at lower engine speed
Gas speed up
Turbine wheel speed up
Narrower
Wider
Depending on the engine speed, angle of vane is changed.
[At low engine speed]
Vane angle is changed to make narrower exhaust gas passage. Thus, the exhaust gas speed applied to turbine is increased to spin the turbine with higher speed.
[At high engine speed]
Vane angle is changed to make wider exhaust gas passage.
At low engine speed
(Exhaust gas pressure is low)
At high engine speed
(Exhaust gas pressure is high)

27. Intake and Exhaust System-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
Control
Target Position
ECM
VNTO
Turbo Motor Driver [for Bank1 (RH)]
VNTI
Control Status
Injector (EDU)
Nozzle Vane Position
Control
Crankshaft Position Sensor
DC Motor
Manifold Absolute Pressure Sensor
This system is controlled by the ECM.
2 turbo motor drivers are used for each turbocharger.
Nozzle Vane Position Sensor
Atmospheric Pressure Sensor
Atmospheric Temp. Sensor
Engine Coolant Temp. Sensor
VNO2
Turbo Motor Driver
[for Bank2 (LH)]
VNI2

28. Reference (Intake and Exhaust System)-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
System diagram of turbo motor driver
Turbo Motor Driver
[for Bank1 (RH)]
EFI Relay +B
Target Position
VN Close
ECM M+ DC
Motor
VNTO
VNTO M-
VNTI
VNTI
VN Open
Status
Signal
Battery
VTA1
Nozzle Vane Position Sensor
GND
VTA2

29. Reference (Intake and Exhaust System)-Q -V -_ -W
Variable Nozzle Vane Type Turbocharger
Location of turbo motor driver
Turbo Motor Driver
(For Bank1)
Turbo Motor Driver
(For Bank2)

30. Intake and Exhaust System-Q -V -_ -W
Diesel Throttle
Rotary solenoid type 2 diesel throttles are used
Intercooler
2 Diesel Throttles
For all model

31. Intake and Exhaust System-Q -_ -W
EGR System
Liner solenoid type 2 EGR valves
Water-cooled type EGR cooler
2 EGR Valves
Exhaust Manifold  EGR Cooler
EGR Cooler
EGR system is used for EUROIV, EUROIII or EURO II model.
The EGR passage is provided in the cylinder head.
Laminated structure type EGR cooler is used.

32. Fuel System Components and Features -Q -V -_ -W Fuel Pressure Sensor
2 Common-rails for each bank RH
3 Plunger Type HP4 Supply Pump
Water-cooled Fuel Cooler
Element Replacement Type Fuel Filter
Fuel Filter Warning Switch
Recirculation Type Fuel Heater
2 Return Paths
With Fuel Heater Model Only
[Features of Fuel System]
- Common-rail system is used
- 3 plunger type HP4 supply pump
- 9-hole type solenoid injector
- 2 Common-rails for each bank
- Water-cooled type fuel cooler
- Air-cooled type fuel cooler at the under floor
- Element replacement type fuel filter
- Fuel filter warning switch is used to detect filter clogging
- Recirculation type fuel heater (-W: STD / Gen: OPT)
- [Dual Tank Model Only (-Q, -V, Gen)] Fuel pump is provided in the main fuel tank to transfer the fuel in sub tank to main tank
There are 2 return paths to prevent the pressure of the return fuel from increasing. If the pressure of the return fuel increases, the performance of fuel system parts decreases.
On the dual fuel tank model, the return tube passes through the sub fuel tank and returns to the main fuel tank. This construction utilizes the heat of the return fuel that has been warmed by the engine to prevent the temperature in the sub fuel tank from decreasing. If the temperature in the sub fuel tank decreases, the fuel viscosity become high and the fuel transfer does not operate normally.
9-hole Type Solenoid Injector
Air-cooled Fuel Cooler
Dual Tank Model Only LH
Jet Pump
Pressure Limiter
Fuel Pump
Dual Tank Model Only
Fuel Tank
(Main)
Fuel Tank
(Sub)

33. Fuel System Common-rail 2 Common-rails for each bank -Q -V -_ -W
Pressure Sensor
Common-rails
Pressure Limiter
[Common-rail Pressure]
EURO IV Model: 25 ~ 175 MPa
Except EURO IV Model: 25 ~ 129 MPa
Injector
Supply Pump
Front

34. Fuel System Supply Pump (HP4)-Q -V -_ -W
Supply Pump (HP4)
3 plunger type supply pump is used to correspond to the injection volume increase
Return
Inlet
Outlet
3 plunger type supply pump is used to correspond to the injection volume increase by high displacement and high output engine.
3 Plungers

35. Injector Compensation Code (30-digit)
Fuel System -Q -V -_ -W
Injector
9-hole type solenoid injector is used
Injector Compensation Code (30-digit)
From Common-rail
Return to Fuel Tank
0.113 mm
9-hole type solenoid injector
Small injection hole ( mm)

36. Fuel System EDU 2 EDUs are used -Q -V -_ -W EDU for #1,4,6,7

37. Fuel System Fuel Filter Element replacement type fuel filter is used-Q -V -_ -W
Fuel Filter
Element replacement type fuel filter is used
From Fuel Tank
Element replacement type fuel filter is used.
To Supply Pump
Fuel Filter

38. Fuel System Fuel Filter Main Components -Q -V -_ -W Bolt x3 Priming
Pump
Fuel Filter Warning Switch
Filter Cap
Filter Element
Filter Case
Recirculation Type
Fuel Heater
(Only for –W and Gen)
The filter cap is installed by the bolt to improve serviceability at the element replacement.
Recirculation type fuel heater is used for –W as standard equipment and -_ as optional equipment.
Drain Cock
Fuel Sedimenter Level Warning Switch
Bracket

39. Fuel System Fuel Filter-Q -V -_ -W
Fuel Filter
When the fuel filter clogging is detected by fuel filter warning switch, fuel filter replacement is required
Clogging
Fuel Filter Warning Switch
Multi-information Display (Optitron Type Combination Meter)
[Optitron Type Combination Meter]
When the fuel filter clogging is detected by fuel filter warning switch, “Fuel Filter Maintenance Reqd” message is displayed on the multi-information display in combination meter. It shows that the fuel filter replacement is required.
Note: Master warning light is turned on with the indication of the warning message.
[Analog Type Combination Meter]
When the fuel filter clogging is detected by fuel filter warning switch, the Fuel System Warning Light is turned on. It shows that the fuel filter replacement is required.
Fuel System Warning Light
Fuel Filter
Analog Type Combination Meter

40. Fuel System Fuel Filter-Q -V -_ -W
Fuel Filter
Fuel filter warning switch is turned OFF when the filter outlet pressure decreases
Fuel Filter Warning Switch
Fuel Filter Warning Switch ON
OFF
Meter ECU
Meter ECU
Diaphragm
To Supply Pump
To Supply Pump
Filter Element
Negative Pressure
Fuel filter warning switch is same as KD series engine on HIACE and IMV.
Fuel filter clogging system: Vacuum switch
Filter element is clogged, suction from supply pump generates higher negative pressure in fuel pipe. Then, switch is turned off.
Normal Fuel Filter (Switch: ON)
Fuel Filter Clogged Up
(Switch: OFF)

41. Analog Type Combination Meter
Fuel System -Q -V -_ -W
Fuel Filter (Analog Type Combination Meter Only)
Warning light condition for fuel filter / fuel sedimenter
Warning
Warning Method
Priority
Sedimenter Warning
Blink 1
Fuel Filter Warning ON 2
Analog Type Combination Meter Only
This warning light is for both filter warning and sedimenter warning.
Warning condition:
- Sedimenter warning: blink
- Fuel filter warning: stays on
If the both sedimenter and fuel filter warning are detected, the warning light blinks (as sedimenter warning).
Analog Type Combination Meter

42. Fuel System Fuel Filter-Q -V -_ -W
Fuel Filter
After the fuel filter replacement, perform the reset operation to turn off the warning message/light
Reset Operation
Within
sec.
3 sec.
Warning message is turned OFF
The clogging detection is memorized in EEPROM and the warning message/light is indicated until reset operation is performed.
After the fuel filter replacement, perform the reset operation to turn off the warning message/light.
Reset operation is same as KD series engine on HIACE and IMV.
[Reset Operation]
1. After the fuel filter replacement, turn the engine switch on (IG). (The fuel filter warning switch connector should be disconnected before engine switch on (IG).)
2. Connect the fuel filter warning switch connector within 3 – 60 sec. after engine switch on (IG).
3. 3 sec. after the step2, warning message/light is turned OFF.
ON (IG)
Connect
Fuel Filter Replacement
(fuel filter warning switch connector disconnected)
Reset operation is same as 1KD/2KD engine on HIACE and IMV

43. Fuel System Fuel Cooler Water-cooled type fuel cooler at the V bank A-Q -V -_ -W
Fuel Cooler
Water-cooled type fuel cooler at the V bank
: Coolant Flow
: Fuel Flow
Return Fuel
To Water Pump
From Left Bank Injector
From Cylinder Block
 Front
Water-cooled type fuel cooler cools the return fuel from injector.
From Right Bank Injector A
View from A

44. Fuel System Fuel Cooler Air-cooled type fuel cooler under the floor -Q-V -_ -W
Fuel Cooler
Air-cooled type fuel cooler under the floor
Fuel Cooler
From Engine
Air-cooled type fuel cooler cools the return fuel from engine (injector).
To Fuel Tank
Front

45. Fuel Tank (Main) [93-liter]
Fuel System -Q -V -_
Fuel Pump (Dual Fuel Tank Model Only)
Fuel pump is provided in the main tank to transfer the fuel in sub tank to main tank
Engine
ECM
Fuel Transfer System
Fuel pump and jet pump are used to transfer the fuel in the sub tank to main tank.
Note: The fuel tank change over system which is used with previous model is discontinued.
[Sub Fuel Tank]
- Standard equipment for –Q and –V
- Optional equipment for -_
- Not equipped for -W
Fuel Tank
(Sub)
[45-liter]
Jet Pump
Fuel Tank (Main) [93-liter]
Fuel Pump

46. [Sub Tank to Jet Pump (Main Tank)]
Fuel System -Q -V -_
Fuel Pump (Dual Fuel Tank Model Only)
Location
Fuel Tank (Sub)
[45-liter]
Fuel Pump
Jet Pump
Fuel Line
[Sub Tank to Jet Pump (Main Tank)]
Fuel Tank (Main)
[93-liter]
Front

47. ECM operates the fuel pump for fuel transfer
Fuel System -Q -V -_
Fuel Pump (Dual Fuel Tank Model Only)
ECM controls a fuel pump in accordance with the amount of fuel consumption
ECM
ECM operates the fuel pump for fuel transfer
Injection Volume
Fuel Consumption
ECM controls a fuel pump in accordance with the amount of fuel consumption.
The fuel pump in the fuel tank operates the jet pump for fuel transfer.
Main
Sub
Fuel Pump Relay
Fuel Pump Control

48. Fuel transfer operation is not normal
Fuel System -Q -V -_
Fuel Pump (Dual Fuel Tank Model Only)
When the malfunction is detected in the fuel transfer system, the fuel level warning light is blinked
Sub
Main
7.8-liter or more
When the Meter ECU detects the malfunction in the fuel transfer system, the fuel level warning light is blinked.
[Malfunction Detection Condition]
Fuel of 7.8-liter or more remains in the sub tank when the fuel level of the main tank becomes 20.7-liter.
Above condition shows that the fuel transfer operation is not done normally.
20.7-liter
Blink
Fuel transfer operation is not normal

49. Engine Mount Electrical Hydraulic Type Engine Mount-Q -V -_ -W
Electrical Hydraulic Type Engine Mount
The electrical hydraulic type is used for the front engine mounts to reduce the engine vibration at idling
Vacuum Pump
Vacuum Line
Rubber
VSV
No.1 Fluid Chamber
No.2 Fluid Chamber
The electrical hydraulic type is used for the front engine mounts to reduce the engine vibration at idling.
Diaphragm
To VSV
Front Engine Mounts

50. Electrical Hydraulic type Engine Mounts-Q -V -_ -W
Electrical Hydraulic Type Engine Mount
System Diagram
Vacuum Pump
Vehicle Speed
VSV
ECM
Engine Speed
Electrical Hydraulic type Engine Mounts

51. Engine Mount Electrical Hydraulic Type Engine Mount-Q -V -_ -W
Electrical Hydraulic Type Engine Mount
Mount characteristic
No.2 Fluid Passage
No.1 Fluid Passage
[When the VSV is OFF]
Vacuum is not introduced to the engine mount.
The fluid passes the No.1 fluid passage only.
Mount Characteristic = Hard
[When the VSV is ON]
Vacuum is introduced to the engine mount and the No.2 fluid passage is opened.
The fluid passes the No.1 and No.2 fluid passage.
Mount Characteristic = Soft
No vacuum
Vacuum
VSV OFF = Hard
VSV ON = Soft

52. Engine Mount Electrical Hydraulic Type Engine Mount-Q -V -_ -W
Electrical Hydraulic Type Engine Mount
When the engine is idling and vehicle is driving at a low speed, the VSV is turned ON
Operating Condition
Vehicle Speed
VSV OFF
(Hard)
When the engine is idling and vehicle is driving at a low speed, the VSV is turned ON (mount = soft) to reduce engine vibration.
VSV ON
(Soft)
VSV OFF *1
Engine Speed
*1: During engine cranking (vacuum is unstable)

53. Engine Control System ECM Dash panel penetration installation -Q -V -_-W
ECM
Dash panel penetration installation
Body
ECM
ECM
Dash panel penetration installation is adopted a countermeasure for heat.
ECM with waterproof connector.
Note: This vehicle uses a fluid coupler driven cooling fan. This system does not control heat in the engine compartment as well as electric cooling fans therefore the ECM is in the cab area for temperature control and the connector is in the engine compartment so that the wire harness does not have to route through the dash panel.
Gasket
(Non-reusable Part)