2009 LAMBORGHINI GALLARDO fuel pressure
[x] Cancel search: fuel pressurePage 347 of 1659
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) L J ) L J
%A
( ( ( ( (
' ' ' ' ' '
) ) )
C
*
® 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 $
$ ' L V D V V H P E O L Q J W K H L Q M H F W R U V 3 U H O L P L Q D U \ R S H U D W L R Q V
•Disassemble the engine hood(082703)
• Remove the engine aesthetic panels (Engine Bay) (081303)
• Remove the air intake manifold (012903).
' L V D V V H P E O L Q J W K H L Q M H F W R U V
It is compulsory to carry out the fuel pressure reduction safety procedure before disassembling the
injectors.
1. Disconnect the connector ( $ ) L J ).
2. Disconnect the fuel pipe ( % ) L J ).
3. Unscrew the screws that secure the stop ( & ) L J ) to the engine:
• 6 screws ( ' ) L J ).
• 5 nuts ( ( ) L J ).
• 6 screws ( ) ) L J ).
4. Remove the stop ( & ) L J ).
5. Disconnect the phase transformer actuator connector ( * ) L J ).
Page 353 of 1659
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) L J
A
%
) L J
) L J
2134
® 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 $
& ' L V D V V H P E O \ K L J K S U H V V X U H I X H O S X P S 3 U H O L P L Q D U \ R S H U D W L R Q V •
Remove the Engine Bay (081303).
• Remove the air intake manifold (012903).
• Remove high pressure fuel pump 3 8 1 7 2 % .
' L V D V V H P E O \ K L J K S U H V V X U H I X H O S X P S 1. Softly screw the two nipples ( $ ) L J ) on the pump
8 V H D Q H Z Q L S S O H V D I W H U H Y H U \ U H P R Y D O
2. Softly screw the purge screw ( % ) L J ) on the pump.
8 V H D Q H Z S X U J H V F U H Z D I W H U H Y H U \ U H P R Y D O
3. Disassemble the pump ( ) L J )
1.High pressure pump
2. Nipple
3. Nipple
4. Purge Screw
Page 357 of 1659
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L714 01 28 05
2134
) L J
A
) L J
) L J
%
® 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 $
% 5 H D V V H P E O \ K L J K S U H V V X U H I X H O S X P S 1. Reassemble the various parts of the high pressure pump ( ) L J ).
1. High pressure pump
2. Nipple
3. Nipple
4. Purge Screw
2. Manually screw the purge screw ( $ ) L J ) on the pump.
Use a new purge screw.
3. Mannualy screw the two nipples ( $ ) L J ) on the pump.
Use new nipples.
• Assemble the high pressure fuel pump (Step C).
• Assemble the air intake manifold (012905).
• Assemble the Engine Bay (081305).
Page 358 of 1659
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) L J
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® 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 $
C) Assembling high pressure fuel pump
It is necessary to use new spare parts for the assembly procedure. Using worn parts can damage W K H F D U V H Y H U H O \
1. Spread a thin layer of oil on the grommet ( $ ) L J )
2. Assemble the pump and screw the mounting screws ( % ) L J E \ W X U Q L Q J W Z L F H ¿ U V W R Q H V F U H Z D Q G W K H Q W K H
other so as to tighten them symmetrically. Continue until the two screws are completely tightened.
6 F U H Z L Q J W K H V F U H Z V W L J K W H Q L Q J W R U T X H E
Screwing the screws asymettrically can cause damage to the seat or the stem of the pump.
Page 466 of 1659
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Fig.1
DC
B
A
E
® 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 $
) X H O $ Q W L ( Y D S R U D W L R Q 6 \ V W H P
The anti-evaporation system prevents the fuel vapors, which consist of the lightest fractions of the hydrocarbons that form in the tank, from discharging into the atmosphere and being suctioned again to be burned.
The system operates especially when the outside temperature is high and the fuel temperature rises, thus increasing the tendency to evaporate. 2 S H U D W L Q J 3 U L Q F L S O H
7 K H I X H O Y D S R U V L Q W K H W D Q N D U H F R Q Y H \ H G E \ P H D Q V R I D À R D W L Q J Y D O Y H L Q V W D O O H G R Q W K H W D Q N W R D F D Q L V W H U Z K L F K F D Q
absorb them when the engine is off. 7 K H À R D W L Q J Y D O Y H K D V W K H I R O O R Z L Q J I X Q F W L R Q V •
It prevents the fuel from reaching the canister in the case of hard acceleration/deceleration when the car has a
full tank, or from spilling from the tank, in case the car rolls over;
• It allows the vapors to pass from the tank to the canister;
• It enables to discharge into the atmosphere any excess pressure inside the tank (electrovalve malfunctioning,
clogged pipe).
The canister is connected, by means of two solenoid valves, to two pipes that convey the vapors to the engine intake
manifolds. With the engine running, each solenoid valve is piloted in duty-cycle by the engine control unit according
to engine speed and load, thus putting the canister into communication with the intake manifold and allowing the
suction of the vapors inside the canister. At high engine speed, a venting valve, connecting the canister to the
D W P R V S K H U H E \ P H D Q V R I D Q D G H T X D W H D L U ¿ O W H U S U H Y H Q W V W K H F D Q L V W H U L P S O R V L R Q W K D W F D Q E H F D X V H G E \ W K H H Q J L Q H vacuum.
Fuel anti-evaporation system layout (Fig.1)
A. Fuel pump
B. Left fuel tank
C. Right fuel tank
D. Filter Canister
E. Diagnosis pump
Page 467 of 1659
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Fig.2
AA
® 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 $
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.
Page 1424 of 1659
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® 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 $
3.2.12.2.8.3.1.4. Evap Purge , value 7 ( 9 ( 6 O D Y H 7 ( 9 ( 6 O D Y H 7 ( 9 ( 6 O D Y H P0444 P1491
open circuit
signal voltage evap purge valve
engine speed battery voltage 3 DCY
P0458 P1490 short to ground signal voltage
evap purge valve engine speed battery voltage
P0459P1489 short to battery plus signal current
evap purge valve engine speed battery voltage
Evap Purge System 7 ( 9 6 O D Y H P0441 P1494functional check deviation lambda control
or deviation idle control ignition battery voltage engine speed engine speed deviation time after engine start
ECT
or substitute ECT
IAT
IAT @ engine start altitude3 Fahrzyl.
Fuel Pump Control Unit P025D short to battery plus signal current engine speed battery voltage 3 DCY
P025C short to ground signal voltage
P025A open circuit signal voltage
/ R Z 3 U H V V X U H ) X H O 6 \ V W H P Sensor P2539 out of range high signal voltage
3 DCY
P2541 R X W R I U D Q J H O R Z signal voltage
) X H O 5 D L O 3 U H V V X U H 6 H Q V R U HDS2, Slave P0190P018Aout of range high sensor voltage
3 DCY
HDS2, Slave P0192 P018C R X W R I U D Q J H O R Z
sensor voltage
) X H O 5 H J X O D W R U 9 D O Y H
) X H O 5 H J X O D W R U 9 D O Y H P2296P129Dshort to battery plus signal voltage battery voltage
valve engine relay 3 DCY
P2295 P129C short to ground signal voltage
battery voltage valve engine relay
P2294 P129B open circuit
signal voltage
) X H O 5 D L O 3 U H V V X U H & R Q W U R O P2293 rationality check fuel pressure regulator
et point deviationTime since start or fuel cut off
Fuel cut off3 DCY
Page 1432 of 1659
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® 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 $
, 0 5 X Q Q H U ) O D S V Bank 1 Bank 2 P2014P2019
R X W R I U D Q J H O R Z
signal voltage 3 DCY.
P2017 P2022 out of range high signal voltage
P2004 P2005 stuck open check Difference desired-actual position Engine speed
ECT battery voltage adaption3 Fahrzyl.
P2006 P2007 stuck closed check Difference desired-actual position Engine speed
ECT battery voltage adaption
, 0 5 X Q Q H U ) O D S V
6 R O H Q R L G 9 D O Y H P2008 open circuit
signal voltage U X Q Q H U À D S V engine speed battery voltage 3 DCY
P2009 short to ground signal voltage
P2010 short to battery plus signal current U X Q Q H U À D S V engine speed battery voltage
Injector valves Communication CPU P062B communication check
3 DCY
, Q M H F W L R Q 9 D O Y H V High Pressure Fuel System cylinder #1 and #3 cylinder #4 and #5 cylinder #2 cylinder #6 and #8 cylinder #9and #10 cylinder #7 P2146 P2149P2152 P2155
P216A P216D
short to battery plus high pressure system current injection valve
O R Z V L G H V L J Q D O F X U U H Q W engine speed battery voltage 3 DCY
cylinder #1 and #3 cylinder #4 and #5 cylinder #2 cylinder #6 and #8 cylinder #9and #10 cylinder #7 P2146 P2149 P2152 P2155
P216A P216Dshort to ground high pressure system current injection valve
engine speed battery voltage