2010 ASTON MARTIN V8 VANTAGE air condition

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
May 2007 Workshop Manual 12-3-15
4. Install throttle body duct.
5. Connect breather pipe quickf its (x2) to air cleaner duct.
6. Install condenser (see Workshop Manual procedure 03.03.EC Air Con - Condenser - Renew).
7. Install PAS pump (see Workshop Manual procedure 03.05.AA Pump - Powe r Steering - Renew).

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
12-3-16 Workshop Manual May 2007
Troubleshooting
The areas for inspection (steps) are given according to various circuit malfunctions. Use the following chart to verify the
symptoms of the trouble in order to diagnose the appropriate area.
Symptom(1)
Symptom (2)DescriptionPossible Cause
Amount of air blown from vents
does not change. Fault in blower system. • Blower motor fault
• Blower unit fault
• Power transistor system fault
• Climate control unit fault
Shake the wiring harness and connectors wh ile performing the inspection to discover whether poor contact points are the
cause of any intermittent malfunc tions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (4)DescriptionPossible Cause
Air intake mode does not change. Air intake mode does not change
when switching REC FRESH
mode. • Air Intake Actuator fault
• Air intake door fault
Shake the wiring harness and conn ectors while performing the inspection to di scover whether poor contact points are the
cause of any intermittent malfunc tions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (5)DescriptionPossible Cause
No temperature control with A/C
Module. Temperature does not change
with operating temperature
control dial• Air Mix Actuator (5 V signal) system fault
• A/C Module (potentiometer GND signal) system
fault
• Air Mix Actuator (potentiometer input signal) system fault
• Air Mix Actuator (potentiometer GND signal, motor drive signal) system fault
•Air Mix Actuator system fault
• A/C unit air mix door fault
Shake the wiring harness and conn ectors while performing the inspection to di scover whether poor contact points are the
cause of any intermittent malfunc tions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (6)DescriptionPossible Cause
Windshield fogged. • A/C compressor does not
operate while airflow mode is
in DEFROSTER or HEAT DEF
modes
• Air intake mode does not change to FRESH while
airflow mode is in
DEFROSTER or HEAT DEF
modes • A/C Module (B+ signal) system fault
• Air intake actuator fault
• A/C Module (RECIRCULATE, FRESH signal)
system fault
• Fault in blower unit air intake doors
Shake the wiring harness and conn ectors while performing the inspection to discover whether poor contact points are the
cause of any intermittent malfunctions. If there is a problem, check to make sure conn ectors, terminals and wiring harnesses
are connected correctly and undamaged.

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
May 2007 Workshop Manual 12-3-17
Symptom (7)DescriptionPossible Cause
Air from vents not cold enough. Magnetic clutch operates but A/
C system malfunctions. • Drive belt fault
• Fault in blower unit or condenser
• Fault in Receiver / Drier or expansion valve
(valve closes too much)
• Fault in refrigerant lines
• A/C compressor system fault, insufficient compressor oil
• Over filling of compressor oil, fault in expansion valve or A/C unit air mix link system
Symptom (8)Possible Cause
No cool air. Magnetic clutch does not
operate. • Fault in PCM A/C cut control system
• Fault in A/C Module
• Fault in refrigerant pressure switch
• Fault in PCM (A/C signal)
• Fault in PCM (IG1 signal)
• Fault in A/C compressor
•Fault in A/C relay
• Fault in Evaporator Temperature Sensor
Shake the wiring harness and connectors wh ile performing the inspection to discover whether poor contact points are the
cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (9)Possible Cause
Noise while operating A/C
system. Noise from magnetic clutch, A/C
compressor, hose or refrigerant
line. • Magnetic clutch operation noise
• A/C compressor slippage noise
• Hose or refrigerant line interference noise

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
12-3-18 Workshop Manual May 2007

Battery System (14.01)
Power Supply (14.00)14-1-4 Workshop Manual May 2007
Specifications
Maintenance
Battery Disconnect Switch-Renew
Removal
1. Power RH seat fully forward.
2. Remove rear compartment cover.
3. Disconnect vehicle battery.
4. Remove panel assembly - quar ter trim middle - RH (see
Workshop Manual procedure 01.05.CL Panel Assembly
- Quarter Trim Middle Section - RH - Renew).
5. Release rear carpet studs (x2), move carpet aside.
6. Remove screws (x2), battery compartment cover to support rail.
7. Remove nuts (x2), RH rear heel board to body. Remove heel board.
8. Remove nuts/washers (x2), securing battery cables to battery disconnect switch (see Fig. 1).
9. Release battery cables (x4) from battery disconnect switch. Note fitted position of spacer washer between
RH battery cables.
10. Remove Torx screws (x3), securing battery disconnect switch to mounting bracket. 11. Release multiplug from brac
ket, disconnect multiplug,
remove battery disconnect switch.
12. Remove battery cable bolts from battery disconnect switch.
Installation
1. Install battery cable bolts in disconnect switch.
2. Position battery disconnect switch, connect multiplug, install multiplug on bracket.
3. Install and torque tighten Torx screws (x3).
4. Install battery cables (x4), install washers (x2), install and torque tighten nuts (x2).
5. Install RH rear heel board, install and tighten screws (x2) and nuts (x2).
6. Position rear carpet, install on studs (x2).
7. Connect vehicle battery.
8. Install panel assembly - quarter trim middle - RH (see Workshop Manual procedure 01.05.CL Panel Assembly
- Quarter Trim Middle Section - RH - Renew).
9. Install rear compartment cover.
10. Power RH seat to original position.
Battery Conditioner-Renew
Removal
1. Disconnect vehicle battery.
2. Remove carpet - RH side luggage compartment (see Workshop Manual procedure 01.05.FB Carpet
Assembly - Luggage Compartment - Side - RH - Renew).
3. Remove tyre sealant bottle.
4. Remove mobility kit from storage rack.
5. Remove bolt, loosen nuts (x2), power socket bracket.
6. Slide luggage compartment fusebox rearwards, release
from mounting bracket.
7. Release terminal cover, remove nut securing main battery lead to fusebox.
8. Release harness clips (x2) from power socket bracket.
Torque Figures
DescriptionNm.lb. / ft.
Battery clamp
Battery Terminals 9
97
7
Repair Operation Time (ROT)
Warning
To prevent damage to electrical components, always disconnect the vehicle battery when working on the
vehicle's electrical system. The earth lead ( - ve) must be
disconnected first and reconnected last.
Fig. 1
$
Warning
Always connect the earth (- ve) terminal last.
Repair Operation Time (ROT)
ItemCode
Battery Conditioner-Renew 14.01.DL
Warning
To prevent damage to elec trical components, always
disconnect the vehicle battery when working on the
vehicle's electrical system. The earth lead ( - ve) must be
disconnected first and reconnected last.

Battery System (14.01)
Power Supply (14.00)
May 2007 Workshop Manual 14-1-5
9. Disconnect harness multiplu g, battery conditioner (see
Fig. 1).
10. Remove screws (x2), battery conditioner to power socket bracket. Remove battery conditioner (see Fig. 2).
Installation
1. Install battery conditioner, install and tighten screws (x2).
2. Connect multiplug, battery conditioner.
3. Install harness clips (x2) on power socket bracket.
4. Position main battery cable, install and torque tighten nut, install terminal cover.
5. Install fusebox in mounting bracket.
6. Install harness clips (x2) on power socket bracket.
7. Position power socket bracket, install bolt. torque tighten bolt and nuts (x2).
8. Install mobility kit.
9. Install tyre sealant bottle.
10. Install carpet - RH side luggage compartment. (see Workshop Manual procedure 01.05.FB Carpet
Assembly - Luggage Compartment - Side - RH - Renew). 11. Connect vehicle battery.
Battery Disconnect Switch to Bulkhead
Stud Cable Assembly-Renew
Removal
1. Remove RH seat (see Workshop Manual procedure
01.10.AA Seat Assembly - Front - RH - Remove for
Access and Refit).
2. Disconnect vehicle battery.
3. Remove screws (x4) front fl oor carpet retaining brackets
(x2) to floor.
4. Release RH front floor car pet from fasteners (x4),
remove carpet.
5. Release RH rear floor carpet from fasteners (x4), remove
carpet.
6. Release and remove RH tunnel carpet.
7. Remove moulding assembly - quarter trim upper RH (see Workshop Manual procedure 01.05.CX Moulding
Assembly - Quarter Trim Upper - RH - Renew).
8. Remove nuts (x2) and scre ws (x2) securing RH heel
board to body and support rail. Remove heel board.
9. Remove nuts (x3) and scre ws (x6) securing CEM cover
plate to body, remove cover plate.
10. Remove screws (x2) securing CEM to mounting bracket. Position CEM aside.
11. Release cover, remove nut securing battery cables (x3)
to bulkhead stud (see Fig. 1).
Fig. 1
Fig. 2
Warning
Always connect the earth (- ve) terminal last.
$
$
Repair Operation Time (ROT)
Warning
To prevent damage to electrical components, always disconnect the vehicle battery when working on the
vehicle's electrical system. The earth lead ( - ve) must be disconnected first an d reconnected last.
$

Torque Figures
Appendix & Glossary20-1-14 Workshop Manual May 2007
Wheels and Tyre Checks
x x x Check for correct tyre size, type and orientation.
x x x Check and report tyre tread depth.
x x x Check tyres for uneven/excessive wear or damage.
x x x Check/adjust tyre pressures.
x x x Check torque of road wheel nuts.
x x x Check road wheel rims for inner and outer damage.
x x x Check colour coded valve collars for co rrect location (tyre pressure monitoring)
(not Japanese market)
x x x Check ‘Use by ’ date of tyre repair kit and replace if expired or expiry date is
within 12 months
Anti Corrosion Check - x x Check body panels and underbody for corrosion starting from the inside - out
(excluding stone chips).
Final Checks x x x Degrease windscreen.
x x x Check clutch functionality.
x x x Check operation/condition of all seat belts and buckles.
x x x Check that the fuel filler bowl rain drain is clear.
x x x Carry out road test.
1000mls
1500km
3 months10000mls
16000km
12 months20000mls
32000km
24 months

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.