air condition LAMBORGHINI MURCIÉLAGO 2009 Service User Guide
[x] Cancel search | Manufacturer: LAMBORGHINI, Model Year: 2009, Model line: MURCIÉLAGO, Model: LAMBORGHINI MURCIÉLAGO 2009Pages: 1173, PDF Size: 98.14 MB
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Fig.6
® 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 U L Q J W K H D V V H P E O \
15. Install P/N 961195027 liner-stop on the concerned liner to prevent it from moving.
16. Insert the connecting rod-piston assembly in the crankcase, checking that:
• 7 K H F R Q Q H F W L Q J U R G E H D G V I D F H W K H F U D Q N V K D I W V K R X O G H U V
• The numbers printed on the connecting rods caps correspond to the numbers printed on the
connecting rod small end.
17. Apply Molycote 1000 on the threads and on the striking surface of the connecting rod cap bolts and tighten the
bolts; Tightening torque (000800-2a).
18. Then tighten to angle check.
7 L J K W H Q L Q J Y D O X H V D
• Oil pump assemble (011505)
•Timing system chain assemble (019005)
• Assemble the oil draft pipe
• Assemble the oil pan
• Timing system cover assemble (019005)
• Assemble the front crankshaft pulley
•Rear differential assemble (050905)
• Head assemble (010305)
• Alternator, power steering pump and air conditioning system compressor frame assemble.
• Air intake manifold assemble (012905)
• Exhaust manifolds assemble (025105)
• Silencer and exhaust terminals assemble (025105)
• Gearbox assemble (030105)
• Thermostatic valve assemble (012105)
• Engine assemble (010005)
Page 280 of 1173
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Fig.4
( (
F
GG
H
Fig.5 Fig.6
I
® 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.
Unscrew the 4 screws ( ( ) L J ) that secure the power steering pump support frame ( F-Fig.4), A/C compressor
and alternator.
1 2 7 (
Drain the air conditioning system (026008).
6. Remove the 4 upper screws ( G-Fig.5) and the 2 lower screws ( H-Fig.5) that secure the thermostatic valve
cover.
7. Remove the 3 nuts ( I-Fig.6) that secure the water pump to the timing system cover.
8. Remove the water pump.
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L824 01 28 002
( Q J L Q H F R Q W U R O V \ V W H P I X Q F W L R Q O D \ R X W
1. Front relay/fuse box
2. Engine speed and TDC sensor
3.
Intake manifold solenoid valves andsecondary
air valves
4. Single ignition coil
5. Fuel vapor pressure sensor
6. throttle bodies
7. Fuel Pump
8. Exhaust gas pressure sensors
9. TMAP
10. Cylinder bank 1-6 catalyst upstream oxygen
sensor
(linear)
11. Air vent regulating actuators
12. Vacuum system tanks
13. Cylinder bank 1-6 catalytic converter
14.
Cylinder bank 1-6 catalyst downstream oxygen sensor
15. ENCS solenoid valve
16. Right radiator fan
17. Cylinder bank 1-6 valve timing solenoid valve
18. Spoiler actuators
19. Cylinder bank 1-6 fuel pressure regulator
20. Cylinder bank 1-6 post catalyst (USA)
21. ENCS valve 22. Cylinder bank 7-12 post catalyst (USA)
23. Cylinder bank 7-12 fuel pressure regulator
24. Cylinder bank 7-12 valve timing solenoid valve
25. Left radiator fan
26. Cylinder bank 7-12 catalyst upstream oxygen
sensor
27. Cylinder bank 7-12 catalytic converter
28. Cylinder bank 7-12 catalyst downstream oxygen
sensor
(linear)
29. Battery
30.
Cylinder bank 1-6 camshaft seat position
sensor
31. Canister
32.
Cylinder bank 7-12 camshaft seat position
sensor
33. Engine control unit (ECU)
34. Front relay/fuse box
35. Instrument board
36. GFA control unit
37. PCM control unit
38. Ignition switch
39. Conditioning system ECU
40. Cylinder bank 7-12 injectors 41. Oil pressure sensor
42. Knock sensors
43. Throttle position sensor
44. Engine oil tank
45. Oil temperature sensor
46. E-gear oil tank
47. MED ECU
48. MED valves
49. Arrows and taillights diagnosis ECU
50. ETB ECU
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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 $
Injection System
The aim of the injection management strategies is to supply the engine with the correct amount of fuel at the required
moment according to the engine operating conditions.
The injection management is essentially the calculation of the injection time, the determination of the injection timingand the subsequent actuation through the injector control.
The “basic” injection time is calculated by a mathematical interpolation of the speed-load map: The values contained
L Q W K H P D S R E W D L Q H G H [ S H U L P H Q W D O O \ D O V R G H S H Q G R Q W K H L Q M H F W R U V S H F L ¿ F D W L R Q V
7 K H ³ ¿ Q D O ´ L Q M H F W L R Q W L P H L V R E W D L Q H G E \ D F D O F X O D W L R Q D O J R U L W K P L Q Z K L F K W K H ³ E D V L F ´ W L P H L V F R U U H F W H G E \ F R H I ¿ F L H Q W V
that take into account the different engine operating conditions both at sea level and at altitude, which are indicated by the various sensors installed in the system.
0 L [ W 0 L [ W X U X U X U H H 6 6 W U W U W U H Q J W K H Q J W K & K H F N F K H F N L Q I I H H G E H H G E H H G E D F N D F N F O R F O R V H G H G O R R S O R R S
7 K L V V W U D W H J \ F R U U H F W V W K H L Q M H F W L R Q W L P H V V R W K D W W K H P L [ W X U H V W U H Q J W K À X F W X D W H V F R Q W L Q X D O O \ 7 K H I U H T X H Q F \ R I W K H À X F W X D W L R Q F K D Q J H V D F F R U G L Q J W R W K H H Q J L Q H O R D G D Q G V S H H G
The ratio below is the mixture ratio and is indicated with the Greek letter á (alpha): Quantity of air taken in by the engine
Quantity of injected fuel
The ratio below is the stoichiometric mixture ratio and is indicated with a st: Theoretical quantity of air to burn - All the injected fuelQuantity of injected fuel
The ratio below is the mixture titration and is indicated with the Greek letter ë (lambda): Quantity of air taken in by the engine
.
Theoretical quantity of air to burn - All the injected fuel
The stoichiometric ratio depends on the type of fuel: For current unleaded petrol it is equivalent to approx. 14.7, that corresponds to a lambda titration = 1.
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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 $
A rich mixture is when the air quantity is less than the stoichiometric quantity and in this case we have Ilios lambda <1;
A weak mixture is when the air quantity is greater than the stoichiometric quantity and in this case we have Ilios
lambda >1;
7 K H I H H G E D F N R S H U D W L R Q F O R V H G O R R S S H U P L W V W K H F D W D O \ W L F F R Q Y H U W H U V W R R S H U D W H H I ¿ F L H Q W O \ 7 K L V R S H U D W L Q J F R Q G L W L R Q
also enables the engine control
unit to run its self-learning function.
The pre-catalytic oxygen sensors are linear and allow the engine to continuously operate under strengthcontrol; even in the WOT condition, the strength is guaranteed by the control system.
Cold Start and Running
The injection time during the starter motor actuation is determined by a special mapping according to the coolant and oil temperatures: After ignition has taken place the system passes over to the standard speed-load mapping.
When there is a cold start, since there is a natural impoverishment of the mixture due to reduced evaporation and heavy condensation on the inner walls of the fuel intake manifold, the “basic” injection time is increased by a
P X O W L S O \ L Q J F R H I ¿ F L H Q W D F F R U G L Q J W R W K H H Q J L Q H W H P S H U D W X U H $ F F H O H U D W L R Q D Q G ' H F H O H U D W L R Q
Acceleration and deceleration are interpreted by the system as transient stages between two stationary conditions:
This may be positive (acceleration) or negative (deceleration).
The transient strategy is very complicated since many factors have to be taken into consideration.
Usually the injection time is increased for positive transients and decreased for negative transients.
The size of the correction depends basically on the engine load variation: However, also values such as throttle
movement speed (inside the throttle bodies), engine speed, engine temperature (coolant and intake air) are also involved. Injector Control
The injector control is a timed sequential type. Rotation Speed Limiting
The strategy limits the peak speed that can be reached by enabling the cut-off when the engine reaches this speed.
Peak speed = 8150 rpm
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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 $
) X H O 3 X P S & R Q W U R O
Due to security reasons concerning the presence of throttle bodies the fuel pumps and injectors of cylinder bank 1-6
are supplied by relays controlled by LIE 7- 12 control unit and vice versa.
The pumps are stopped:
• If the engine speed drops under 350 rpm approx.;
• After a certain time (about 3 seconds) with the key to MAR position without starting up (timed enable);
Self-learning strategy
Self-learning only affects the optimum air percentage for the idle speed (0 to 60 seconds). The strength is kept constant with the target strength (value requested by the system under that particular operation condition).
The range of operation of the pre-catalytic oxygen sensor (linear) is 0.8 to 1.20.
If the value is below 1.00, the system is RICH; otherwise, the system is POOR.
The self-learning values of the linear oxygen sensors are always saved in the control unit during normal
operation.
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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 $
( Q J L Q H , G O H 6 S H H G & R Q W U R O
The aim is to maintain the engine rpm at around the memorised value, depending on the start-up temperature andthe start-up time itself. A throttle value and an ideal advance value are associated with each target rpm (which forms
a set point around which the system works to maintain the pre-established rpm).
• Start-up with cold engine
During the ignition transient with cold engine an offset on throttle bodies opening is managed according to
engine coolant temperature/ignition seconds.
• : D U P H Q J L Q H
When starting with a warm engine, a throttle bodies opening offset is applied based on the engine coolant temperature / ignition seconds and engine oil temperature in order to bring the engine to at least 1,000 rpm
and prevent vapor-lock. Following these operations the system goes to idle conditions where the control unit
automatically maintains the target rpm by carrying out the necessary corrections on the advance and air.
Page 320 of 1173
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L824 01 31 01
Fig.1
ABC
® 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 $
& 2 D Q G + & F R Q W H Q W V F K H F N Proceed as follows to check the CO and HC contents: •
Stop the engine and start it again;
• Turn the engine for at least two minutes at 1800/2000 rpm;
• Check that the coolant and air temperature values of the two cylinder banks are at least 73°C and 30°C
respectively;
• Make sure that the cooling fans are on (the fans should start up at least three times if the outdoor temperature
is lower than 20°C) and that the air
conditioning system compressor is off (select maximum temperature);
• 6 D P S O H H [ K D X V W J D V I U R P W K H V S H F L ¿ F Y H Q W V A-Fig. 1).
Check that the CO and HC contents are respectively:
CO < 1.0 %
HC < 500 ppm.
A. CO vent
B. Exhaust manifold
C. Catalyst
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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 $
$ 7 L P L Q J V \ V W H P F R Y H U G L V D V V H P E O \ 3 U H U H T X L V L W H V
1 R W H
7 K L V S U R F H G X U H F D Q R Q O \ E H F D U U L H G R X W D I W H U W K H H Q J L Q H K D V E H H Q U H P R Y H G I U R P W K H F D U
• Auxiliary belt removed (010103).
• Water pump removed (012203).
• Air conditioning system compressor support removed (026003).
• Alternator and its support removed (090303).
• Rear differential removed (050903).
' L V D V V H P E O \
1. 5 H P R Y H W K H R L O ¿ O W H U V X S S R U W (013003).
2. 8 Q V F U H Z W K H W Z R V F U H Z V X Q G H U W K H R L O ¿ O W H U V X S S R U W
3. Unscrew the auxiliary belt pulley mounting bolt and its washer.
4. 5 H P R Y H W K H D X [ L O L D U \ E H O W S X O O H \ E \ P H D Q V R I D V S H F L ¿ F S X O O H U
5. Remove the auxiliary pulley belt tensioner.
6. Remove the heads (010303).
7. Remove the cover mounting nuts with washers and remove the cover.
8. Remove the auxiliary belt pulley oil seal from timing system cover.
1 R W H
7 L P L Q J V \ V W H P F R Y H U K H D G V D Q G F U D Q N F D V H D U H D G D S W H G S L H F H V L I R Q H R I W K H P L V U H S O D F H G V S H F L ¿ F
P H F K D Q L F D O L Q W H U Y H Q W L R Q L V Q H H G H G W R U H F R Y H U S H U I H F W O H D N W L J K W Q H V V
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
$ 7 L P L Q J V \ V W H P F R Y H U %
Timing system chain
Page 373 of 1173
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L824 02 51 00
Fig.5
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A
B
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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 $
Secondary air supply system strategy When the car is turned, if the following conditions occur: •Water temperature between -11°C and +40°C;
• Air temperature <40°C;
• Catalytic converter temperature <250°C;
the pump is controlled: its maximum time is 65 sec.
The pump will stop if any one of these conditions occurs.
To deactivate the system (and disable the pump), one of the following conditions must occur: • Catalytic converter temperature >680°C;
• Air temperature >40°C;
• H2o temperature >40°C;
• Any condition related to the temperature but with a PA1024 >99%.
This system is used when the car started with a cold engine, to increase combustion and allow the catalytic converter
to reach its operating range quickly, reducing emissions.
Secondary air assembly ) L J
A.Auxiliary air valves
B. Pump