sensor LAMBORGHINI MURCIÉLAGO 2009 Service Owner's Manual
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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
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1.
Connect the right catalytic converter to the rest of the engine unit using the relative clamp ( $ ) L J ).
2. Assemble the heat-proof panel ( B-Fig.2) under the right catalytic converter.
5 H S H D W W K H V D P H R S H U D W L R Q V I R U W K H O H I W F D W D O \ W L F F R Q Y H U W H U
• Connect the two temperature sensors to the catalytic converters (025405).
• Connect the four oxygen sensors to the catalytic converters (025305).
• Connect the silencer to the catalytic converters using the provided pipes with clamps (025105).
• Assemble the silencer’s four supports onto the chassis (025105).
• Assemble the two exhaust terminals (025105).
• Assemble the silencer guard (025105).
• Assemble the rear hood located above the silencer.
• Assemble the silencer safety grid (025105).
• Assemble the engine hood (082705).
• Assemble the black plastic rear grille (081305).
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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
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Engine Speed and TDC sensor 7 K H V H Q V R U L V ¿ [ H G R Q W R W K H F U D Q N F D V H H Q J L Q H À \ Z K H H O V L G H Fig.1).
A. & D V L Q J
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E. $ L U J D S
2 S H U D W L Q J 3 U L Q F L S O H
7 K H V H Q V R U F R Q V L V W V R I D W X E X O D U F D V L Q J A-Fig.2 L Q V L G H Z K L F K W K H U H L V D S H U P D Q H Q W P D J Q H W C-Fig.2 D Q G D Q
H O H F W U L F D O Z L Q G L Q J B-Fig.2 7 K H P D J Q H W L F À R Z F U H D W H G E \ W K H P D J Q H W C-Fig.2 G X H W R W K H S D V V D J H R I W K H S K R Q L F
Z K H H O W H H W K À X F W X D W H V D F F R U G L Q J W R W K H D L U J D S Y D U L D W L R Q 7 K H V H À X F W X D W L R Q V L Q G X F H D Q H O H F W U R P R W L Y H I R U F H L Q W K H F R L O B-Fig.2 D W W K H H Q G V R I Z K L F K D S R V L W L Y H Y R O W D J H W R R W K I D F L Q J V H Q V R U D Q G D Q H J D W L Y H Y R O W D J H J D S I D F L Q J W K H V H Q V R U
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7 K H U H D U H W Z R Z D \ V W R L Q V H U W W K H V H Q V R U R Q W K H F U D Q N F D V H $ O Z D \ V S R V L W L R Q L W W R W K H O H I W R I F \ O L Q G H U E D Q N 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
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
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* D V 3 U H V V X U H ' H W H F W L R Q 6 \ V W H P $ W ( [ K D X V W 3 L S H
Each exhaust manifold is equipped with a differential pressure sensor (Fig.1 D E O H W R G H W H F W W K H S U H V V X U H À R Z L Q V L G H
W K H P D Q L I R O G L W V H O I 7 K L V V H Q V R U G H W H U P L Q H V W K H P L V ¿ U L Q J F \ O L Q G H U W K U R X J K W K H L Q M H F W L R Q V \ V W H P D Q G G L V S O D \ V W K U R X J K W K H 2 % ' , , H U U R U F R G H D Q \ H [ K D X V W S U R E O H P V
The differential pressure sensor R X W S X W V L J Q D O Fig.2 V H Q W W R W K H U H O H Y D Q W / , ( L V U H S U H V H Q W H G E \ D S X O V H V H U L H V
each pulse corresponds to a spec
L ¿ H G F \ O L Q G H U $ 0 , 6 ) , 5 ( L V G H W H F W H G Z K H Q W K H L Q G H [ L V J U H D W H U W K D Q W K H W K U H V K R O G
F D O L E U D W H G E \ W K H ( & 8
A. Threshold value ( E H O R Z W K L V Y D O X H P L V ¿ U L Q J L V L G H Q W L ¿ H G D Q G W K H 2 % ' , , S D J H L V G L V S O D \ H G
B. Peak value
7 R Y L H Z W K H V H Y D O X H V X V H W K H / ' $ 6 V \ V W H P (109114) D Q G R S H Q W K H ³ 0 L V ¿ U H V W D W X V ´ Z L Q G R Z
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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
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( [ K D X V W
pressure sensor disassembly
1. Disconnect the connector ( A-Fig.1) connected to the sensor ( B-Fig.1).
2. Unscrew the two nuts ( C-Fig.2) that secure the sensor.
3. Remove the sensor.
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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
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pressure sensor assembly
1. Tighten the two nuts ( A-Fig.1) that secure the sensor ( B-Fig.1).
2. Connect the connector ( C-Fig.1).
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Fig.2
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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
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
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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 (VISTON valve), connecting the
F D Q L V W H U W R W K H 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 by the engine vacuum.
The fuel vapor sensor generates a OBDII error in case of not controlled fuel vapor emission (not pressurized tank with leakage from the pipes or plug missing).
Fuel anti-evaporation system layout (Fig.2)
A. Fuel vapors pressure sensor
B. Floating valve
C. Fuel tank
D. Right suction fuel vapor inlet E. Left suction fuel vapor inlet
F. Venting valve (VISTON)
* $ L U ¿ O W H U I R U F D Q L V W H U Y H Q W L O D W L R Q H. Canister
I. Solenoid valves
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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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General Description The exhaust system consists of the following parts: •
Six in two in one insulated manifold;
• Single catalytic converter (EU) or with post-catalyst (USA);
• Exhaust silencer.
( [ K D X V W V \ V W H P ) L J
A. Exhaust manifold
B. CO pick-up pipe
C. Lambda sensor upstream of the catalytic converter (LINEAR)
D. Catalytic converter
E. Thermocouple outlet
F. Lambda sensor downstream of the catalytic converter
G. Post-catalyst (USA)
H. Exhaust silencer
I. Exhaust terminal
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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
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& D W D O \ W L F & R Q Y H U W H U
The catalytic converter is a device that simultaneously reduces the three main pollution components in the exhaust: Unburnt hydrocarbons (HC), carbonmonoxide (CO) and nitrogen oxides (NOx). Inside the catalytic converter two chemical reactions take place: •Oxidizing of the CO and HC, converted into carbon dioxide (CO2) and water (H2O);
• Reduction of the NOx converted into nitrogen (N2).
These reactions are possible in a very short time due to the presence inside the structure (metal block) of the
catalyst, of a layer of active substances (platinum and rhodium) that considerably speed up the conversion of the harmful substances.
7 K H H I ¿ F L H Q F \ R I W K L V F R Q Y H U V L R Q S U R F H V V K R Z H Y H U G H S H Q G V R Q W K H I D F W W K D W W K H P L [ W X U H V W U H Q J W K W K D W L V X V H G E \ W K H
H Q J L Q H F R Q W L Q X D O O \ À X F W X D W H V D U R X Q G W K H V W R L F K L R P H W U L F Y D O X H W K D W L V R E W D L Q H G Y L D W K H I H H G E D F N F D U U L H G R X W E \ W K H control unit based on the lambda sensor signals.
Moreover the conversion processes take place with temperatures over 300 to 350°C: Therefore it is essential that
the catalytic converter reaches this temperature as soon as possible so as to operate correctly.
& D W D O \ W L F F R Q Y H U W H U F K H P L V W U \ ) L J
A. Metal block
B. Metal support
C External steel wrapping
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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
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
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The causes of destruction of the catalyst inner part are mainly two: •Lead in the fuel, that lowers the conversion level to practically nothing (“lead poisoning”) and irreparably
damages the lambda sensor too;
• & R P S O H W H O \ X Q E X U Q W I X H O L Q W K H H [ K D X V W J D V G X H W R P L V ¿ U L Q J 7 K L V F D X V H V D Q L Q F U H D V H L Q W H P S H U D W X U H V X F K D V
to cause the melting of the metal support. As a consequence the connector must never, in any circumstances, be disconnected from the coils when the engine is running.
Page 390 of 1173
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L824 02 53 00
Fig.1
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Fig.2
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2 [ \ J H Q 6 H Q V R U
It is a sensor 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 this sensor it is possible to measure the deviation from the stoichometric ratio (lambda ratio) of the air – fuel mixture sent to the cylinders.
Each cylinder bank has two oxygen sensors: one is installed on the exhaust gas inlet coupling in the catalytic converter of the exhaust system, the other on the converter outlet.
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 LDAS-32 to check the POST-catalytic converter oxygen sensors. External air Exhaust gases
Electrodes
Engine control unit
Sensor voltage