2009 LAMBORGHINI MURCIÉLAGO Service Repair Manual

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1.
Position the 2 exhaust terminals ( $)LJ).
2. Secure the 2 exhaust terminals to the silencer ( %)LJ) using the 2 clamps.
 Tighten the 4 mounting screws ( &)LJD).
4. Position the exhaust system’s safety panel and tighten the 4 screws ( ')LJD).
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1.
Connect the silencer to the catalytic converters using the pipes and clamps ( $)LJ).
2. Use the 4 supports ( %)LJ) to restrain the silencer to the frame.
• Assemble the two exhaust terminals 3RLQW&.
• Assemble the silencer guard 3RLQW(.
• Assemble the spoiler on the silencer (082705).
• Assemble the silencer safety grid 3RLQW).
• Assemble the central rear grid .

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1.
Position the silencer guard ( $)LJ).
2. Tighten the 4 screws ( %)LJ) securing the 2 side brackets ( &)LJ) on the guard (2 screws for each
bracket).
 Tighten the 2 screws ( ')LJ) on the guard above the silencer.
• Assemble the spoiler above the silencer (082705).
• Assemble the silencer safety grid 3RLQW).

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1.
To secure the silencer safety grid to the car, tighten the 4 upper screws ( $)LJ) and the 4 lower screws ( %
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G)Assembling the secondary air assembly
The secondary air assembly consists in: • Two auxiliary air valves ( $)LJ0).
• A pump ( %)LJ0).
• Connection system consisting in pipes and unions ( &)LJ0).
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1. Secure the auxiliary air valves ( $)LJ0) by acting on the two screws ( ')LJ0) fastening them to the unions
( ()LJ 0).
2. Connect the pipe ( &)LJ0).
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1. Secure the pump to the bracket.
2. Secure the bracket ( +)LJ0E\DFWLQJRQWKHWZR¿[LQJVFUHZV
 Connect the pipe ( *)LJ0).
4. Connect the connector ( ))LJ0).
5. Assemble the rear left wheel arch .
6. Assemble the rear left wheel (060105).

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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
212))R[\JHQVHQVRURSHUDWLRQGLDJUDPSRVWFDWDO\WLFFRQYHUWHU • 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

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• No mechanical component.
• The positive voltage of the pump cell attracts negative oxygen ions through the oxygen-permeable ceramic.
Use LDAS-32  to check the PRE-catalytic converter oxygen sensors.

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pre-catalytic oxygen sensors (LINEAR)
post-catalytic oxygen sensors (ON-OFF)The oxygen sensors located on the left catalytic converter require a disassembly sequence that differs from those located on the right catalytic converter:
$2[\JHQVHQVRUVRQULJKWFDWDO\WLFFRQYHUWHU 3UHOLPLQDU\RSHUDWLRQV • Remove the silencer safety grid (025103).
Sensor disassemble
1. Disconnect the two oxygen sensors (A-Fig.1).
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• Remove the left rear wheel (060103).
• Remove the stone-guard of the left rear wheel (082103).
Sensor disassemble
1. Disconnect the two oxygen sensors (B-Fig.2). The pre-catalytic converter oxygen sensor can be directly
disconnected from the hood; the post-catalytic converter oxygen sensor, rather, requires the removal of the left
rear stone-guard and wheel.