Injection control unit LAMBORGHINI GALLARDO 2009 Workshop Manual
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W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
$ ' L V D V V H P E O L Q J W K H Z D W H U F R R O L Q J F L U F X L W W D Q N Q R X U L F H 3 U H O L P L Q D U \ R S H U D W L R Q V • Empty the engine coolant circuit .
• Disassemble the rear hood support piston .
• Disassemble the right side bulkhead .
• Release the right engine injection control unit (MASTER) .
' L V D V V H P E O L Q J W K H W D Q N1.
Disconnect the coolant level connector( A-Fig.1 ).
2. Disconnect the 4 pipes ( B-Fig.1) connected to the tank ( C-Fig.1).
7 K L V V H F W L R Q H [ S O D L Q V K R Z W R G L V D V V H P E O H
$ : D W H U F R R O L Q J F L U F X L W W D Q N Q R X U L F H
B) Cooling circuit radiator
C) Radiator fan
' : D W H U S L S H V
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Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
3. Connect the 4 pipes ( G-Fig.3) to the tank ( H-Fig.3).
4.
Connect the coolant level connector( I-Fig.3 ).
• Fill the engine coolant circuit .
• Secure the right engine injection control unit (MASTER) .
• Assemble the right side bulkhead .
• Assemble the rear hood support piston .
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Fig.1
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® Automobili Lamborghini S.p.A.
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The
G L U H F W L Q M H F W L R Q V \ V W H P ' , 6 is comparable to the running of an indirect injection engine. The basic difference
is that in this case, the fuel is injected directly into the cylinder.
This system better optimizes the amount of fuel to be injected, so consumption – and consequently emissions – are reduced. Characteristics of the system • A low pressure pump having an operation range between 6 and 4 bar,
• 7 Z R L Q W D N H P D Q L I R O G V H T X L S S H G Z L W K W Z R D L U À R Z P H W H U V W K D W P H D V X U H W K H À R Z D Q G W H P S H U D W X U H R I W K H D V S L U D W H G
air (one per manifold),
• Two high pressure pumps mechanically driven by the motion of the engine can reach a pressure varying
between E D U 0 , 1 D Q G E D U 0 $ ; .
• High pressure injectors that directly inject the fuel into the cylinder crown.
• A special piston that allows a vortex to be created, inside of which the fuel vaporized at high pressure is
sprayed.
The system is designed for the following types of operation: • V W R L F K L R P H W U L F V W U D W L ¿ H G P L [ W X U H
• homogeneous mixture,
• homogeneous and rich mixture.
, Q R X U V S H F L ¿ F F D V H homogeneous operation is used:
I U R P W R U S P L Q V W R L F K L R P H W U L F V W U D W L ¿ H G P L [ W X U H H V S H F L D O O \ D W O R Z V S H H G V D Q G G X U L Q J W K H L J Q L W L R Q S K D V H V W R
help with emissions.Homogenous and rich running is used only when there is a demand for torque.
When running at low speeds, the injection system is further aided by a tumble system inside the intake manifold that
helps the vortex created by the design of the piston, ensuring that the quantity of injected fuel goes directly beneath the spark plug. In this way the mixture is optimized with a lower quantity of fuel.
The injection of fuel during the compression phase of the cylinder is managed electronically by two injection control
units, of which one works as the MASTER and the other as the SLAVE .
The injection system is controlled by two linear oxygen sensors that alter the amount of fuel according to the demand
of torque and engine rpm. There are also two latest generation three-way pre-catalytic converters ( A-Fig.1) (with two
oxygen sensors for their control) and two post-catalytic converters incorporated inside the silencer ( B-Fig.1).
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G L $ X W R P R E L O L / D P E R U J K L Q L 6 S $ L Q E D V H D O O D O H J J H V X L G L U L W W L G ¶ D X W R U H 7 X W W L L F D S L W R O L 3 ' ) G L F X L V L F R P S R Q J R Q R L P D Q X D O L R I ¿ F L Q D : ( % G H V F U L W W L G L V H J X L W R V L E D V D Q R V X O O H L Q I R U P D ] L R Q L G L V S R Q L E L O L D O
P R P H Q W R G H O O D S X E E O L F D ] L R Q H & R Q U L V H U Y D G L D J J L R U Q D P H Q W R H P R G L ¿ F K H 6 R Q R Y L H W D W H O D U L V W D P S D O D U L S U R G X ] L R Q H O ¶ L Q R O W U R D S H U V R Q H Q R Q D X W R U L ] ] D W H H R D W H U ] H S H U V R Q H O D W U D G X ] L R Q H D Q F K H S D U ] L D O H
V H Q ] D O ¶ D X W R U L ] ] D ] L R Q H V F U L W W D G D S D U W H G L $ X W R P R E L O L / D P E R U J K L Q L 6 S $
Fuel pump
There is only one electric fuel pump (
A-Fig.6) and it is in the right tank. This pump is controlled by an ECU ( B-Fig.6)
which in turn is controlled by the master control unit.
The pump has an operating pressure ranging between 4 and 6 bar, depending on the various operating conditions
of the vehicle.
The pump sends the fuel to the two high pressure pumps (which are mechanical) that compress the fuel and take the pressure to a value varying from 120 to 140 bar, according to vehicle operation.
Both the high and low pressure pumps are monitored by two sensors installed on the respective lines to prevent overpressure problems. Linear phase transformers
Linear phase transformers allow the engine phase to vary according to the torque required in order to always have optimum phasing.
In this version they are always enabled, and the phasing follows different maps according to the load and the atmospheric conditions. Piloting is performed by a solenoid valve ( A-Fig.7), which makes the oil pass inside the phase-changing gear.
This operation is managed by the injection control units that also receive the position of the camshaft through the
Hall effect sensors ( B-Fig.7) mounted on the camshafts:
• two sensors for the exhaust (one per cylinder bank)
• two sensors for the intake (one per cylinder bank)
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Fig.1
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/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
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Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
Inspecting the throttle bodies
Use the LaRa-AS system
(109000) to inspect the throttle bodies every time a throttle body is cleaned or replaced.
Settings are made using special basic setting 60 (throttle body adaptation) on both the MASTER injection and
SLAVE control units.
To check the throttle bodies, use diagnostic function 33 and special group 07 (Throttle body control) on both the
MASTER injection and SLAVE control units.
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® Automobili Lamborghini S.p.A.
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/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
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3 X U J H Y D O Y H V
The purge valves (
A-Fig.2) empty the canister (that holds back the fuel gases that form inside the tank) positioned
on the right side of the engine compartment. 7 K H W Z R Y D O Y H V D U H ¿ W W H G X Q G H U Q H D W K W K H L Q W D N H P D Q L I R O G Z K L F K K D V W R E H U H P R Y H G W R J H W W R W K H Y D O Y H V The purge valves are driven by the injection control units according to a strategy set by their calibration software.
In the circuit is a pump positioned under the canister that controls the system’s seal; this pump is driven according to the operating time.
The control unit receives the information if the circuit is sealed, so the more time spent loading the pressure into the tank, the greater the possibility is that the system turns on the pilot lamp.
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A) Canister disassembly 3 U H O L P L Q D U \ R S H U D W L R Q V • Disassemble the rear hood support piston .
• Disassemble the right side bulkhead .
• Disassemble the water cooling circuit tank (nourice) with its support frame .
• Disassemble the vacuum tank .
• Disassemble the pannel upper .
' L V D V V H P E O L Q J W K H F D Q L V W H U1. Disconnect and remove the third brake light connection from its supports ( $ ) L J ) and the rear view camera
connection ( % ) L J ).
• Release the cylinder bank 1-5 engine injection control unit .
2. Loosen the 3 screws ( & ) L J ) and remove the engine injection control unit support bracket ( ' ) L J ). Disconnect
W K H F R Q Q H F W L R Q S L S H E H W Z H H Q W K H D F W L Y H F D U E R Q ¿ O W H U & D Q L V W H U D Q G W K H D F W L Y H F D U E R Q ¿ O W H U S X P S W R H D V H W K H
procedure ( ( ) L J ).
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4. 6 H F X U H W K H F D Q L V W H U E \ W L J K W H Q L Q J W K H ¿ [ L Q J V F U H Z V ) ) L J ).
5. Connect the 2 pipes ( * ) L J ).
6.To secure the engine injection control unit support bracket ( + ) L J ), use 3 screws ( , ) L J ). Then connect the
remaining pipe ( - ) L J Z K L F K F R Q Q H F W V W K H D F W L Y H F D U E R Q ¿ O W H U Canister) to its pump.
• Insert the cylinder bank 1-5 engine injection control unit .
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Fig.1
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Fig.2
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2 [ \ J H Q V H Q V R U V
The oxygen sensors are the sensors generating an electric signal according to the ratio between the oxygen inside
the exhaust gas and the oxygen inside the outside air. By means of these sensors it is possible to measure the deviation from the stoichiometric ratio (lambda ratio) of the air – fuel mixture sent to the cylinders.A. Pre-catalyst oxygen sensor (LINEAR)
B. Post-catalyst oxygen sensor (ON-OFF)
C. Catalyst
2 1 2 ) ) R [ \ J H Q V H Q V R U R S H U D W L R Q G L D J U D P S R V W F D W D O \ W L F F R Q Y H U W H U • The main element is a ceramic body coated on both sides (Nernst cell).
• The coatings act as electrodes.
• One layer of electrodes is in contact with external air, the other with the exhaust gases.
• The difference between the oxygen contained in the outside air and that in the exhaust gases generates the
sensor’s voltage.
Use LaRa-AS on both the MASTER and SLAVE engine injection control units to check the POST-
catalytic converter oxygen sensors. External air Exhaust gases
Electrodes
Engine control unit
Sensor voltage
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Fig.3
® Automobili Lamborghini S.p.A. 7 K H L Q I R U P D W L R Q D Q G S U R F H G X U H V S X E O L V K H G E H O R Z D U H V W U L F W O \ F R Q ¿ G H Q W L D O D Q G H [ F O X V L Y H O \ I R U W K H / D P E R U J K L Q L ' H D O H U 1 H W Z R U N D Q G $ X W K R U L ] H G 6 H U Y L F H 3 R L Q W V $ O O F R S \ U L J K W V D U H S U R S H U W \ R I $ X W R P R E L O L
/ D P E R U J K L Q L 6 S $ E D V H G R Q F R S \ U L J K W O D Z $ O O R I W K H 3 ' ) F K D S W H U V L Q W K H : ( % Z R U N V K R S P D Q X D O V G H V F U L E H G E H O R Z D U H E D V H G R Q L Q I R U P D W L R Q D Y D L O D E O H D W W K H W L P H R I S X E O L F D W L R Q 7 K H F R P S D Q \ U H V H U Y H V
W K H U L J K W W R P D N H X S G D W H V D Q G P R G L ¿ F D W L R Q V 7 K H I R O O R Z L Q J D U H S U R K L E L W H G U H S U L Q W L Q J U H S U R G X F W L R Q I R U Z D U G L Q J W R X Q D X W K R U L ] H G S H R S O H D Q G R U W K L U G S D U W L H V D Q G W U D Q V O D W L R Q L Q F O X G L Q J S D U W L D O Z L W K R X W
Z U L W W H Q D X W K R U L ] D W L R Q I U R P $ X W R P R E L O L / D P E R U J K L Q L 6 S $
/ , 1 ( $ 5 R [ \ J H Q V H Q V R U R S H U D W L R Q G L D J U D P S U H F D W D O \ W L F F R Q Y H U W H U Oxygen sensor adjustment with broadband oxygen sensor: •The pumping effect of the pump cell is a purely physical process.
• No mechanical component.
• The positive voltage of the pump cell attracts negative oxygen ions through the oxygen-permeable ceramic.
Use LaRa-AS on both the MASTER and SLAVE engine injection control units to check the PRE-
catalytic converter oxygen sensors.