2010 ASTON MARTIN V8 VANTAGE length

Silencer Assembly (09.01)
Exhaust (09.00)
Issue 5, January 2010 Workshop Manual 9-1-9
20. Coupe Only - Remove cable ties (x2) from LH and RH
HEGO sensor harnesses.
21. Remove nuts (x6), securing each catalyst to exhaust manifolds.
22. With assistance, remove catalysts (x2), release HEGO sensor harnesses from behind heat shield.
23. Coupe Only - Remove string from multiplugs.
24. Discard gaskets (x2) from exhaust manifolds.
25. Coupe Only - Remove bolts (x11), heatshields to centre,
LH and RH rear pipes. Remove heatshields.
Installation
1. Clean heatshields.
2. Coupe Only - Position heatshields to centre, LH and RH
rear pipes. Install and tighten bolts.
3. Install new flange gaskets to exhaust manifolds.
4. With assistance, install both catalysts, install and torque tighten nuts (x6).
5. Roadster Only - Install bolts (x4) and nuts (x2) to
catalyst heatshield.
6. Coupe Only - Feed HEGO sensor harnesses behind
heat shield, secure harnesses with cable ties.
7. Apply exhaust sealant to cent re pipe, install centre pipe
to catalysts and centre mounting. Do not torque clamp
nuts at this stage.
8. Roadster Only - Install centre exhaust mounting bolts
(x4).
9. Apply exhaust sealant to LH and RH rear pipes.
10. Install LH and RH rear pi pes to centre pipe. Do not
torque clamp nuts at this stage.
11. Install both rear rubber mountings and hanger brackets to silencer.
12. Position silencer on lifter . Install silencer, position
hangers, install and tighten bolts (x4).
13. Install front mountings to silencer, install and tighten bolts (x4).
14. Align silencer to rear pipes, install springs (x4) and bolts (x4). Do not torque bolts at this stage.
15. Install and align stub pipes (x2) to silencer and to trims in
bumper.
16. Align clamps, do not torque tighten.
17. Connect lines to both by-pass vacuum valves.
18. Coupe Only - Remove string from multiplugs.
19. Connect multiplugs to HEGO sensors. 20. Working from front to rear, set all exhaust to body
clearances.
21. Tighten all exhaust fixings to the correct torque.
22. Install subframe cross brace, install and torque tighten bolts (x4).
23. Position mounting brackets, install rear bumper diffuser. Install and tighten Allen bolts.
24. Install undertrays - vehicle set (refer to Workshop Manual procedure 01.02.PD Undertrays - Vehicle Set -
Renew).
25. Lower vehicle on ramp.
Attach lengths of string to th e HEGO sensor multiplugs. This
enables routing the HEGO se nsor harness behind the
exhaust heat shield on assembly.
WA R N I N G
GET THE AID OF ONE MORE PERSON WHEN YOU
INSTALL THE REAR EXHAUST SILENCER.
THE SILENCER IS HEAVY .
Ensure correct alignment of exhaust pipes and silencer before tightening of fixing clamps.

Pipes and Supports (09.03)
Exhaust System (09.00)
May 2007 Workshop Manual 9-2-1
Exhaust System (09.00)
Pipes and Supports (09.03)
Specifications
Maintenance
RH/LH Catalyst and Pipe Assembly-
Renew
Removal
1. Raise vehicle on ramp.
2. Remove rear exhaust silencer (refer to Workshop Manual procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access and Refit).
3. Disconnect multiplugs (x2), HEGO sensors.
4. Release sensor lead from clip on heatshield.
5. Secure sufficient lengths of string to HEGO sensor multiplugs for assembly purposes.
6. Loosen LH and RH clamp nuts , catalysts to centre pipe.
7. Remove nuts (x3), catalyst to exhaust manifold.
8. With assistance, manoeuvre exhaust centre pipe assembly rearwards to release from catalysts.
9. With assistance, release and support weight of LH/RH catalyst from exhaust manifold.
10. Manoeuvre HEGO sensor le ads and remove cable tie.
Release HEGO sensor leads from behind heat shield.
Remove string from HEGO multiplugs.
11. Remove catalyst assembly.
12. Remove and discard gasket.
13. Remove HEGO sensors (x2) from catalyst.
Installation
1. Clean catalyst, mating joint faces and HEGO sensors.
2. Install and tighten HEGO sensors (x2) to catalyst. 3. Install new gasket to exhaust manifold flange.
4. With assistance, position cata
lyst, secure string (x2) to
HEGO multiplugs, feed sensor leads behind heat shield.
Install catalyst to exhaust manifold.
5. Install and torque tighten nuts (x3), catalyst to exhaust manifold.
6. Align centre pipe assembly to catalyst, torque tighten clamp nuts.
7. Remove string (x2), conne ct multiplugs (x2), HEGO
sensors.
8. Secure sensor lead in clip on heatshield.
9. Install rear exhaust silencer (refer to Workshop Manual procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remo ve for Access and Refit).
10. Lower vehicle on ramp.
Exhaust Centre Pipe-Renew
Removal
1. Raise vehicle on ramp.
2. Remove pipe assembly exha ust rear - RH (refer to
Workshop Manual procedure 09.00. Pipe Assembly -
Exhaust - Rear - RH - Renew).
3. Remove pipe assembly exha ust rear - LH (refer to
Workshop Manual procedure 09.00.JB Pipe Assembly -
Exhaust - Rear - LH - Renew).
4. Loosen clamp nuts (x2), centre pipe to LH and RH catalysts.
5. Release centre pipe from mountings, LH and RH
catalysts, remove centre pipe.
6. Remove bolts (x3), heatshie ld to centre pipe, remove
heatshield.
7. Remove Torx screws (x4), mounting bracket to centre pipe, remove bracket.
Installation
1. Use a proprietary exhaust seal ant around all pipe joints
prior to installation of exhaust system.
2. Install mounting bracket to centre pipe, install and tighten Torx screws (x4).
3. Install heatshield to centre pipe, install and tighten bolts (x3).
4. Apply exhaust sealant to centre pipe joints.
Torque Figures
DescriptionNmlb. / ft.
Catalyst (nuts / bolts) 25.5-34.5 19-25.5
Catalyst (clamps) 19-22 14.5-16.5
Centre pipe to rear pipe (clamp) 39-51 29-38
Rear Pipe to Silencer (bolt) 28-33 21-24.5
Repair Operation Time (ROT)
Attach lengths of string to th e HEGO sensor multiplugs. This
enables routing the HEGO se nsor harness behind the
exhaust heat shield on assembly.
Repair Operation Time (ROT)

Pipes and Supports (09.03)
Exhaust System (09.00)9-2-4 Workshop Manual May 2007
5. Install heatshield deflector, front floor (refer to Workshop Manual procedure 09.04.AA Heatshield -
Front Floor - Renew).
Exhaust Gas Temperature Sensor-Renew
Removal
1. Raise vehicle on ramp.
2. Remove rear exhaust silencer (refer to Workshop Manual procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access and Refit).
3. Disconnect sensor multiplugs (x2.
4. Release sensor leads from clips (x2) on heatshield.
5. Secure sufficient lengths of string to sensor multiplugs for assembly purposes.
6. Loosen rear LH and RH clamp nuts, catalysts to centre pipe.
7. Remove nuts (x3), catalyst to exhaust manifold.
8. With assistance, manoeuvre exhaust centre pipe assembly rearwards to release from catalysts.
9. With assistance, release and support weight of LH catalyst from exhaust manifold.
10. Manoeuvre sensor leads and remove cable tie. Release sensor leads from behind heat shield. Secure cable tie.
Remove string fr om multiplugs.
11. Remove catalyst assembly.
12. Remove and discard gasket.
13. Remove sensor from catalyst.
Installation
1. Clean catalyst mating joint faces.
2. Install and tighten sensor (x2) (torque).
3. Apply proprietary exhaust sealant around pipe joints.
4. Install new gasket to exhaust manifold flange.
5. With assistance, position catal yst, secure string (x2) to
multiplugs, feed sensor leads behind heat shield. Install
catalyst to exhaust manifold.
6. Install and torque tighten nuts (x3), catalyst to exhaust manifold. 7. Align centre pipe assembly to catalyst, torque tighten
clamp nuts.
8. Remove string (x2), connect multiplugs (x2), sensors.
9. Secure sensor leads in clips on heatshield.
10. Install rear exhaust silencer (refer to Workshop Manual procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access and Refit).
11. Lower vehicle on ramp.
RH/LH Rear Exhaust Pipe Assembly-
Renew
Removal
1. Raise vehicle on ramp.
2. Remove rear undertray.
3. Remove rear silencer assembly (refer to Workshop Manual procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access and Refit).
4. Remove bolts (x4), cross brace.
5. Loosen clamp nut, release/remove rear intermediate pipe from centre pipe.
6. Remove rear intermediate pipe through subframe.
7. Remove bolts (x4), heat shields (x2).
8. Remove clamp nut, bolt and washers (x2) from rear intermediate pipe.
Installation
1. Clean rear intermediate pipe and mating faces on centre pipe.
2. Install clamp bolt, washers and nut.
3. Position heat shields (x2), install and torque bolts (x4).
4. Apply a proprietary exhaus t sealant to clamp joint.
5. Install rear intermediate pipe to centre pipe.
6. Align rear intermediate pipe to silencer.
7. Install rear silencer assembly (refer to Workshop Manual procedure 09.00.KA Silencer and Bypass Valve
Assembly - Remove for Access and Refit).
8. Torque tighten clamp nut.
9. Install cross brace, install and torque tighten bolts (x4).
10. Install rear undertray.
11. Lower vehicle on ramp.
Repair Operation Time (ROT)
Repair Operation Time (ROT)
ItemCode
Rear Exhaust Pipe Assembly-Renew RH09.00.HB
Rear Exhaust Pipe Assembly-Renew LH09.00.JB
WAR NI NG
TO AVOID PERSONAL INJURY, I.E. SEVERE BURNS TO
THE SKIN, ALLOW EXHAUS T SYSTEM TO COOL
DOWN BEFORE REMOVING EXHAUST SYSTEM COMPONENTS.

AML EOBD System Operation Summary

Rory O’Curry Aston Martin Lagonda CONFIDENTIAL 1 May 2009
[email protected] AML EOBD Monitors 07 ROC.doc Page 4 of 43

Catalyst Efficiency Monitor

The Catalyst Efficiency Monitor uses an oxygen sensor before and after the catalyst to infer Hydrocarbon
conversion efficiency, based on oxygen storage capac ity. Under normal closed-loop fuel conditions, high
efficiency catalysts have significant oxygen storage, which makes the switching frequency of the rear
HO2S quite slow compared with the switching freque ncy of the front HO2S. As catalyst efficiency
deteriorates, its ability to store oxygen declines and the post-catalyst HO2S signal begins to switch more
rapidly, approaching the switching frequency of the pre-catalyst HO2S.

In order to assess catalyst oxygen storage, the monitor compares front and rear HO2S signals during
closed-loop fuel conditions after the engine is warm ed-up and inferred catalyst temperature is within
limits. Front H02S signals are accumulated in up to ni ne different air mass regions or cells although 3 air
mass regions is typical. Rear H02S signals are counted in a single cell for all air mass regions. Currently
there are two algorithms that can be used to compare the front and rear HO2S signals:

1. Switch Ratio method;
The Switch Ratio method compares the 'switch frequencies' of the front and rear HO2S sensors. A
'switch' is counted every time the HO2S voltage output passes through a defined threshold (0.45 V).
The catalyst condition is diagnosed by dividing the number of rear H02S switches by the number of
front HO2S switches.

2. Index Ratio method.
The Index Ratio method calculates and compares the length of the front and rear HO2S signals. The
catalyst condition is diagnosed by dividing the length of the rear HO2S signal by the length of the front
HO2S signal.

A Switch / Index Ratio near 0.0 indicates high oxygen storage capacity, hence high HC efficiency. A
Switch / Index Ratio near 1.0 indicates low oxygen storage capacity, hence low efficiency. To improve the
robustness of the monitor, the Switch / Index Ratio is calculated using an Exponentially Weighted Moving
Average (EWMA) algorithm. If the Switch / Index Ratio exceeds the threshold, the catalyst is considered
failed.

2009 MY OBD-II Documentation4.7L, Aston Martin V8 VantageAston Martin / Ford Confidential
1) "Continuous" under the "Time Required" column indicates that the specified test cycles at a frequency greater than once every 0.5 seconds whenever the
test entry conditions are met.
2) "Once per driving cycle" under the "Time Required" column indicates that the specified test will complete during the first 2 bags of an FTP as well as under
the test entr
y conditions specified, on the road.
3)All test entry condition parameters are measured instantaneously unless otherwise indicated.
p) If a 6 hour soak is met, some strategies will not require another continuous 6 hour soak if the customer performs a brief key-off. This has been put into
effect to improve evap monitor completion frequency.
q) Some strategies will have the ability to base evap monitor soak length on the CARB cold soak criteria which consists of an ECT range and ACT/ECT
differential.
r) A minimum soak time has been added to CARB's cold soak criteria (footnote q) to allow calibrators to set a minimum soak time if longer soak times are
n
eeded than given by the ACT/ECT-based CARB soak criteria.
a) A pending code will be stored after a malfunction has been detected on one driving cycle; a DTC will be stored after the same malfunction has been detected on the second consecutive driving cycle. The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been
extinguished for the DTC.b) A DTC will be stored immediately upon detection of a malfunction. The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been extinguished for the DTC.k) A DTC will be stored after a malfunction has been detected on one drive cycle.The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been extinguished for that DTC.l) A DTC will be stored after a malfunction has been detected on six consecutive drive cycles. The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been extinguished for that DTC.o)For intake air temperatures below 20 deg F, no DTC will set for indicated AIR malfunction.
s) A DTC will be stored after an evaporative system leak has been detected and the refueling debounce check has been completed on the subsequent
driving cycle
c)The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles.
The MIL will be extinguished after three consecutive driving cycles where the monitor was run without a malfunction.d)The MIL will blink immediately upon detection of a misfire rate that exceeds the catalyst damage threshold, regardless of whether fuel is shut off or not.
If the misfire rate drops below the catalyst damage threshold, the MIL will stay on solidly.
The MIL will be extinguished after three consecutive drive cycles where similar conditions have been seen without the malfunction.e)The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles.
The MIL will be extinguished after three consecutive drive cycles where similar conditions have been seen without the malfunction.f)For intake air temperatures below 32 deg F, the MIL will not illuminate for the indicated EGR DTCs.
For barometric pressures below 22.5"Hg, the MIL will not illuminate for the indicated EGR DTCs.
For intake air temperatures below 20 deg F, the MIL will not illuminate for the indicated AIR DTCs.
This prevents false MIL illumination due to ice in the EGR hoses or AIR switching valve(s).g)This monitor employs EWMA.
The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles after DTCs have been erased or Keep Alive Memory
h
as been erased (battery disconnect).
The MIL will be illuminated after a malfunction has been detected on up to six consecutive driving cycles during subsequent, "normal" customer driving.
The MIL will be extinguished after up to six consecutive driving cycles without a malfunction.
h) Some automatic transmission monitors are demonstrated following the USCAR Abbreviated On-Board Diagnostic Test Procedure for Vehicles Equipped
wi
th Automatic Transmissions.
This prevents false MIL illumination on this non-turbine speed sensor transmission application.
i)The MIL will be illuminated after a malfunction has been detected on the first driving cycle.
The MIL will be extinguished after three consecutive driving cycles where the monitor was run without a malfunction.j)A DTC will be set after a malfunction has been detected on two consecutive driving cycles.
m) MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles. MIL will be extinguished after the monitor has run
wi
thout a malfunction (same or subsequent drive cycle).
n) A check cap light will be illuminated after a malfunction has been detected on one driving cycle. The check cap light will be extinguished after the monitor
h
as run without a malfunction (same or subsequent drive cycle).
MIL Illumination:
Notes:
Footnotes
Secondary Parameters
DTC Stora
ge:
EOBD 2009MY_V8 Vantage.xls
Notes 08/02/2005
15

Aston Martin V12 Family
2009 MY V12 Family EOBDincl. V12 Vantage
Aston Martin/Ford Confidential
Notes:
1) "Continuous" under the "Time Required" column indicates that the specified test cycles at a frequency greater than once every 0.5
seconds whenever the test entr
y conditions are met.
2) "Once per driving cycle" under the "Time Required" column indicates that the specified test will complete during the first 2 bags of an
FTP as well as under the test entry conditions s
pecified
, on the road.
3
)All test entr
y condition
parameters are measured instantaneousl
y unless otherwise indicated.
Footnotes:Secondar
y Parameters:
p) If a 6 hour soak is met, some strategies will not require another continuous 6 hour soak if the customer performs a brief key-off. This
has been put into effect to im
prove eva
p monitor com
pletion fre
quenc
y.
q) Some strategies will have the ability to base evap monitor soak length on the CARB cold soak criteria which consists of an ECT range
and ACT/ECT differential.
r) A minimum soak time has been added to CARB's cold soak criteria (footnote q) to allow calibrators to set a minimum soak time if
lon
ger soak times are needed than
given b
y the ACT/ECT-based CARB soak criteria.
DTC Stora
ge:
a) A pending code will be stored after a malfunction has been detected on one driving cycle; a DTC will be stored after the same
malfunction has been detected on the second consecutive drivin
g cycle. The DTC will be erased after 40 warm-u
p cycles with no ma
b) A DTC will be stored immediately upon detection of a malfunction. The DTC will be erased after 40 warm-up cycles with no malfunction
present
, after the MIL has been extin
guished for the DTC.
k) A DTC will be stored after a malfunction has been detected on one drive cycle.The DTC will be erased after 40 warm-up cycles with no
malfunction
present
, after the MIL has been extin
guished for that DTC.
l) A DTC will be stored after a malfunction has been detected on six consecutive drive cycles. The DTC will be erased after 40 warm-up
c
ycles with no malfunction
present
, after the MIL has been extin
guished for that DTC.
o
)For intake air tem
peratures below 20 de
g F, no DTC will set for indicated AIR malfunction.
s) A pending code will be stored after a malfunction has been detected on upto the 6th trip depending on the size of the fault deviation; a
DTC will be stored after the same malfunction has been detected on a second driving cycle. The DTC will be erased after 40 warm-up
cycles with no malfunction. This monitor employs EVMA.
MIL Illumination:c)The MIL will be illuminated after a malfunction has been detected on two consecutive drivin
g cycles.
The MIL will be extin
guished after three consecutive drivin
g cycles where the monitor was run without a malfunction.
d) The MIL will blink immediately upon detection of a misfire rate that exceeds the catalyst damage threshold, regardless of whether fuel
is shut off or not.
If the misfire rate dro
ps below the catal
yst dama
ge threshold
, the MIL will sta
y on solidl
y.
The MIL will be extin
guished after three consecutive drive c
ycles where similar conditions have been seen without the malfunction.
e
)The MIL will be illuminated after a malfunction has been detected on two consecutive drivin
g cycles.
19