ls600hl ls600h (engine)

Body Electrical

Model Outline Hybrid System Engine Chassisfor Technician

Engine OverallOutline– V8 (90-degree), 5.0-liter, 32-valve, D-4S engine w/Dual

VVT-i (VVT-iE for Intake), ETCS-i and ACIS

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Body Electrical


Engine OverallFeatures

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Engine Coolant Distribution

Pathway

Separator Case for PCV

2 High-Pressure Fuel Pumps

Double Slit-nozzle Injector

D-4S

Water Jacket Spacer

4 Flat Type Knock Sensors

•Dual VVT-i •VVT-iE for Intake

Delivery Pipe with Pulsation

Damper Function

MRE Type VVT Sensor

Body Electrical


Engine OverallFeatures

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Element Replacement Type Oil Filter

4 Timing Chains

DC Motor for ACIS Valve

Long-reach Type Spark

Plug

Magnesium Made Head

Cover

Spiny Liner

Hydraulic Lash Adjuster

Body Electrical


Engine OverallSpecifications

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LS600hL / LS600h LS460L / LS460

Engine Type 2UR-FSE 1UR-FSE 1UR-FE

No. of Cyls & Arrangement 8-cylinder, V- type

Valve Mechanism32-valve DOHC, Chain Drive Dual VVT-i (VVT-iE)

Displacement [cm3 (cu. in.)]

4,969 (303.2)

4,608 (281.2)

Bore x Stroke [mm (in.)]

94.0 x 89.5 (3.70 x 3.52)

94.0 x 83.0 (3.70 x 3.27)

Compression Ratio 11.8 10.8

Max. Output[kW (HP) @ rpm]

-A290 (389) @ 6,400

283 (380) @ 6,400 —

-W 280 @ 6,400 255 @ 6,400

Max. Torque[Nm (ftlbf) @ rpm]

-A 521 (385) @ 4,000 498 (367) @ 4,100 —

-W 520 @ 4,000 493 @ 4,100 455 @ 4,000

Body Electrical


Engine OverallSpecifications

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LS600hL / LS600h LS460L / LS460

Engine Type 2UR-FSE 1UR-FSE 1UR-FE

Valve Timing[deg]

Cylinder No. #4,5,7,8 #1,2,3,6 #4,5,7,8 #1,2,3,6 #4,5,7,8 #1,2,3,6

IntakeOpen (BTDC) –33 to 22 –29 to 26 –14 to 26 –10 to 30

Close (ABDC) 101 to 46 97 to 42 82 to 42 78 to 38

ExhaustOpen (BBDC) 60 to 25 64 to 29 60 to 28 64 to 32

Close (ATDC) 4 to 39 0 to 35 4 to 36 0 to 32

Firing Order1 – 8 – 7 – 3 – 6 – 5 – 4 – 2

Emission Regulation

N.A. (CARB)

Tailpipe LEVII-SULEV, SFTP LEVII-ULEV, SFTP —

Evaporative

LEVII, ORVR —

Europe EURO IV —

Except Europe *1 EURO IV, EURO III or EURO II

EURO III, EURO II or Tier1

Engine Service Mass *2

[kg (lb)]236 (520) 232 (511) 225 (496)

*1: The emission regulation differs depending on the country or region.*2: Weight shows the figure with the engine oil and engine coolant fully filled.

Body Electrical


Engine OverallMajor Difference from 1UR-FSE

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LS600hL / LS600h LS460L / LS460

Engine Type 2UR-FSE 1UR-FSE

Crankshaft Pulley Without balance piece With balance piece

VVT-iE Operation Range 55 ºCA 40 ºCA

Delivery Pipe (Direct) With electric relief valve With mechanical relief valve

[-A only]

TWCHCAC System

(Hydro-Carbon Adsorber and Catalyst system)

Conventional

Evaporative Emission Control

System

Closed fuel tank system(with key-off monitor)

Key-off monitor

Body Electrical


Fuel SystemDelivery Pipe (Direct)– Electric relief valve

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From Delivery

Pipe

To Return Pipe

Same as 2GR-FSE on GS450h

Body Electrical


HCAC SystemGeneral– The HCAC system adsorbs the hydrocarbons emitted

during a cold start contained in exhaust gas

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From HCAC VSV

HCAC Valve

HC Adsorver

TWC

Actuator

HC Adsorber and Catalyst (RH)

Body Electrical


HCAC SystemSystem Diagram

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ECM

Mass Air Flow Meter HCAC VSV

Engine Coolant Temperature Sensor

Exhaust Gas Temperature

Sensors

HCAC ValveActuator

Body Electrical


HCAC SystemParts Location

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HCAC VSV

Exhaust Gas Temperature Sensor (x4)

ActuatorHC Adsorber and Catalyst

Body Electrical


HCAC SystemOperation (After the Cold Start)– HCAC valve is closed

• Exhaust gas flows into the HC adsorber and the hydrocarbons in exhaust gas are adsorbed

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Closed

Adsorbing HC

TWC Temp. is Low

Vacuum

Body Electrical


HCAC SystemOperation (After the TWC has Warmed Up)– HCAC valve is opened

• Hydrocarbons stored in the HC adsorber flow into the TWC with a main flow

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Opened

Removing HC

Body Electrical


HCAC SystemOperation (After the Engine has Warmed Up)– HCAC valve is closed (for a few seconds)

• The remaining hydrocarbons in HC adsorber are completely removed

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Closed

Completely Removing HC

Vacuum

Body Electrical


HCAC SystemExhaust Gas Temperature Sensor– Measures exhaust gas temperatures to monitor the

open or close status of the HCAC valve

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Front Sensor Rear Sensor

Temperature Rise

Front > Rear

Temperature Rise

Front < Rear

Front Sensor Rear Sensor

Closed

Opened

Body Electrical


HCAC SystemDTCs for HCAC System

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DTC Detection Item

P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 1)

P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1)



P1081 HC Adsorber Switching Valve Bank 1 Stuck Open

P1082 HC Adsorber Switching Valve Bank 1 Stuck Close

P1083 HC Adsorber Switching Valve Bank 2 Stuck Open

P1084 HC Adsorber Switching Valve Bank 2 Stuck Close

P1438 HCAC System Variable Valve (HCAC VSV) Circuit Low





Body Electrical


Engine Control SystemVVT-iE– VVT-iE (Motor Drive) for intake valve– Hydraulic (conventional) VVT-i for exhaust valve

ExhaustExhaust

IntakeIntake

Hydraulic

Motor-drive

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Body Electrical


Engine Control SystemVVT-iE– Parts location of VVT system

Camshaft Position Sensor

OCV For Exhaust

VVT Sensor(EX, RH)

VVT Sensor(EX, LH)

VVT Sensor(IN, LH)

VVT Sensor(IN, RH)

Crankshaft Position Sensor

VVT-i ControllerFor Exhaust

•Camshaft Control Motor•Reduction mechanism•Link Mechanism

VVT-iE ControllerFor Intake

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Body Electrical


Engine Control SystemVVT-iE– Operation range is expanded by changing from

hydraulic type to motor-drive type

Engine Speed

THW

Hydraulic VVT-i

VVT-iEVVT-iE

VVT System Operation Range

Low High

High

Low

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Body Electrical


Engine Control SystemVVT-iE– System Diagram

Engine ECU

(ECM)

Crankshaft Position Sensor

Camshaft Control Motor Assembly

Camshaft Position Sensor

EDUMotor

Rotation Angle Sensor

VVT Sensor

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Body Electrical


Engine Control SystemVVT-iE– Construction of Camshaft Control Motor and VVT-iE

controller

Cycloid Reduction Mechanism

Motor

EDULink Mechanism

Intake Camshaft

Chain Sprocket(Primary)

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Body Electrical


Engine Control SystemVVT-iE– EDU controls the motor, and feeds back the state of

the motor to engine ECU (ECM)

EDUMotor(12V)


Engine ECU

(ECM)

VTP

VTS

VTD

VTM

Motor Speed and Rotation Direction Command Signal

Actual Motor Speed

Actual Motor Rotation Direction

Fail Information

EDT1

EMR1

EMF1

EMD1

Camshaft Control Motor

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Body Electrical


EDUMotor(12V)


Engine ECU

(ECM)

VTP

VTS

VTD

Motor Speed and Rotation Direction Command Signal

Actual Motor Speed

Actual Motor Rotation Direction

EDT1

EMR1

EMF1


Engine Control SystemVVT-iE– Fail information from EDU

Fail Information

EMD1

ConditionDuty Ratio

Open circuit between VTP and EDT1 100 %

Normal 80 %

EDU Overheat, Motor voltage malfunction

60 %

Rotation angle sensor malfunction 40 %

Protection mode for the motor over current

20 %

VTM5V

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Body Electrical


Engine Control SystemVVT-iE– Construction of Camshaft Control Motor and VVT-iE

controller


Camshaft

Cycloid Reduction

Mechanism

Link Mechanism

Timing Sprocket

Spiral Plate

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Body Electrical


Engine Control SystemVVT-iE– Construction of cycloid reduction mechanism

Planetary Gear [Output]

Carrier[Input]

Sun Gear(Housing Cover)

Bearing

Body Electrical


Engine Control SystemVVT-iE– Operation of cycloid reduction mechanism

Reduction Ratio: 26Reduction Ratio: 26 [ ]: Number of teeth

Motor shaft turns 1

Planetary Gear [27]

Sun Gear [26](Housing Cover)

Planetary gear turns 1/26

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Body Electrical


Engine Control SystemVVT-iE– Operation (Outline)

The difference between the camshaft speed and motor speed is VVT operation

Rotational Speed

Motor Speed

Camshaft Speed

Valve Timing

Advance

Retard

Fast

Slow

VVT Mode RetardAdvance Hold HoldHold

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Body Electrical


Engine Control SystemVVT-iE– Advance operation (Motor Speed > Camshaft Speed)

Advance

Connected to timing sprocket

Connected to camshaft

Spiral plate rotates by

motor

Link Control

Pin

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Body Electrical


Engine Control SystemVVT-iE– Retard operation (Motor Speed < Camshaft Speed)

Retard



Spiral plate rotates by

motor

Link Control

Pin

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Body Electrical


Engine Control SystemVVT-iE– Hold operation (Motor Speed = Camshaft Speed)



Spiral plate does not

rotate

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Body Electrical


Engine Control SystemVVT-iE– Operation

XVL Player

Click the green sphereClick!

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Body Electrical


Engine Control SystemVVT-iE– System operation

[During Idling]

TDC

BDC

Reduce blow back to the intake side

- Effect -•Stabilized idling rpm •Better fuel economy

[In Low Speed Range with Light to Medium Load]

TDC

BDC

Increase internal EGR,

Eliminate pumping loss

- Effect -•Better fuel economy•Improved emission control

Middle Retard

Retard

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MostAdvanced

Body Electrical


Engine Control SystemVVT-iE– System operation[In Low to Medium Speed Range with Heavy Load]

Volumetric efficiency

improvement

- Effect -•Improved torque in low to medium speed range

[In High Speed Range with Heavy Load]

- Effect -•Improved output

TDC

BDC

Advanced

TDC

BDC

Advanced

Advanced Volumetric efficiency

improvement

Retard

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Body Electrical


Engine Control SystemVVT-iE– System operation

[At Low Temperatures]

TDC

BDC

Reduce blow back to the intake side,

stabilizes the idling speed at fast idle

- Effect -•Stabilized fast idling rpm •Better fuel economy

[Upon Starting / Stopping the Engine]

TDC

BDC

Control to optimal timing for engine start

- Effect -•Improved startability

MostRetarded

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Retard

MostAdvanced

MostAdvanced

Body Electrical


Engine Control SystemVVT-iE– DTC for VVT-iE (1/2)

DTC Detection Item Trouble Area

P0010Camshaft Position "A" Actuator Circuit (Bank 1)

• Camshaft timing control motor (bank 1)• Camshaft timing gear assembly (bank 1)

P0011Camshaft Position "A" – Timing Over-Advanced or System Performance (Bank 1)

• Camshaft timing gear assembly (bank 1)

P0012Camshaft Position "A" – Timing Over-Retarded (Bank 1)

• Camshaft timing gear assembly (bank 1)• Camshaft timing control motor (bank 1)

P0016Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor A)

• Valve timing• Camshaft timing gear assembly (bank 1)• Camshaft timing control motor (bank 1)

P0018Crankshaft Position – Camshaft Position Correlation (Bank 2 Sensor A)

• Valve timing• Camshaft timing gear assembly (bank 2)• Camshaft timing control motor (bank 2)

P0020Camshaft Position "A" Actuator Circuit (Bank 2)

• Camshaft timing control motor (bank 2)• Camshaft timing gear assembly (bank 2)

P0021Camshaft Position "A" – Timing Over-Advanced or System Performance (Bank 2)

• Camshaft timing gear assembly (bank 2)

P0022Camshaft Position "A" – Timing Over-Retarded (Bank 2)

• Camshaft timing gear assembly (bank 2)• Camshaft timing control motor (bank 2)

P1023Camshaft Position Signal Output "B" Circuit

• Camshaft timing control motor (bank 1)

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Body Electrical


Engine Control SystemVVT-iE– DTC for VVT-iE (2/2)

DTC Detection Item Trouble Area

P1360"A" Camshaft Position Actuator Circuit Open, Low, High Bank1

• Camshaft timing control motor (bank 1)• Wire harness and connector

P1361"A" Camshaft Position Actuator Circuit Open, Low, High Bank2


P1362"B" Camshaft Position Actuator Circuit Open, Low, High Bank1


P1363"B" Camshaft Position Actuator Circuit Open, Low, High Bank2


P1364"C" Camshaft Position Actuator Circuit Open, Low, High Bank1

• Camshaft timing control motor (bank 1)• Power supply of Camshaft timing control• motor (bank 1)• Wire harness and connector

P1365"C" Camshaft Position Actuator Circuit Open, Low, High Bank2

• Camshaft timing control motor (bank 2)• Power supply of camshaft timing control• motor (bank 2)• Wire harness and connector

P1366"E" Camshaft Position Actuator Circuit Open, Low, High Bank1


P1367"E" Camshaft Position Actuator Circuit Open, Low, High Bank2


P2614Camshaft Position Signal Output Circuit / Open

• Camshaft timing control motor (bank 2)

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Body Electrical


Engine Control SystemVVT-iE– Fail-safe

DTC Component Fail-Safe OperationFail Safe

Deactivation Condition

P0010, P0020, P1023, P1360, P1361, P1362, P1363, P1364, P1365, P1366, P1367, P2614

Camshaft timing control motor

• Idling up (fire prevention), or power to camshaft timing control motor is cut• Valve timing of bank that is operating normally is fixed at maximum retard angle

Pass condition detected

– Active TestTester Display Test Part Control Range

MD VVT B1 VVT-iE (bank1)0 to 40º

MD VVT B2 VVT-iE (bank2)

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ls600hl ls600h (engine)

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