POWER SUPPLY ASTON MARTIN V8 VANTAGE 2010 User Guide

Battery System (14.01)
Power Supply (14.00)
May 2007 Workshop Manual 14-1-9
9. Install front floor carpet retaining brackets (x2), install and tighten screws (x4)
10. Install RH seat (see Wo rkshop Manual procedure
01.10.AA Seat Assembly - Front - RH - Remove for
Access and Refit).
11. Connect vehicle battery.
Warning
Always connect the earth (- ve) terminal last.

Battery System (14.01)
Power Supply (14.00)14-1-10 Workshop Manual May 2007

Alternator and Regulator System (14.02)
Power Supply (14.00)
May 2007 Workshop Manual 14-2-1
Power Supply (14.00)
Alternator and Regulator System (14.02)
Description
The alternator installed to this vehicle is a Denso, SC1, 120
amp rating, with a 14.4 volt regulator.
The Alternator has an 'Altmon' signal that goes to and from
the PCM via a wire in the 3 way connector.
The ‘Altmon’ signal is monitored by the PCM which adjusts
ignition timing and fuelling if necessary to maintain idle
speed when the alternator is charging.
Specifications
Maintenance
Alternator-Renew
Removal
1. Battery isolation switch ‘OFF’.
2. Disconnect breather pipe qu ickfits (x2) from air cleaner
duct.
3. Remove throttle body du ct for access (clips x3).
4. Release tensioner and slip belt from idler.
5. Move belt off alternator pulley.
6. Reposition oil tank (to release alternator).
7. Remove breather pipe (quick fit).
8. Remove pipes (x2) fr om oil tank, tie aside.
9. Remove bolts (x4) securing tank to body, support tank and move aside to left side of engine bay. 10. Disconnect top hose from engine (clip x1) tie aside
(catch coolant).
11. Raise vehicle on ramp.
12. Remove undertray (see Workshop Manual procedure 01.02.NB Undertray - Front - Renew).
13. Remove bolts (x3) securing oil thermostat to body (allows oil tank more sideways movement).
14. Remove road wheel/s.
15. Remove oil filter and renew (see Workshop Manual procedure 03.02.AB Filter - Oil Canister Renew).
16. Reposition heatsheild to gain access to top bolt.
17. Unclip harness from bracket for access to top bolt and move aside.
18. Remove top securing nut and bolt.
19. Remove nut from bottom fixing and withdraw bolt (will foul on front subframe).
20. Lever alternator forward to release clamping of sliding bushes.
21. Using suitable grips remove bottom/ front sliding bush together with bolt.
22. Position alternator for access, disconnect battery (nut x1) lead and multiplug.
23. Lower ramp.
24. Remove alternator via front of engine (oil tank).
Installation
1. Install alternator.
2. Raise ramp.
3. Connect battery lead and multiplug to alternator.
4. Position alternator to bracket, install top fixing nut and bolt (do not tighten).
5. Install bottom bolt with sliding bush into bracket (through alternator).
6. Install nut to bottom bolt and tighten (torque).
7. Tighten top nut and bolt (torque)
8. Install oil filter and re new (see Workshop Manual
procedure 03.02.AB Filter - Oil Canister Renew).
9. Clip harness to bracket.
10. Reposition heatsheild to original position.
11. Install bolts (x3) securing oil thermostat to body (torque).
12. Install undertray (see Workshop Manual procedure 01.02.NB Undertray - Front - Renew).
13. Install road wheel/s
14. Lower vehicle on ramp.
15. Reposition oil tank.
16. Connect top hose to engine (clip x1).
17. Position tank to body and fit bolts (x4) (torque).
18. Install oil pipes to tank.
19. Connect breather hose.
20. Fit belt to alternator pulley.
Torque Figures
DescriptionNmlb/ft
Alternator mounts 43-52 32-38.5
Repair Operation Time (ROT)




Alternator and Regulator System (14.02)
Power Supply (14.00)14-2-2 Workshop Manual May 2007
21. Release tensioner and slip belt on idler.
22. Install throttle body duct.
23. Connect breather pipe quickf its (x2) to air cleaner duct.
24. Battery isolation switch ‘ON’.
25. Top up coolant.

Wiring and Circuit Protection (18.01)
Electric Distribution/E lectronic Control (18.00)
18-1-8 Workshop Manual May 2007
Relays
Another significant component in the circuits is a relay, this
is in simple terms a switch that operates on the principal of
electromagnetism. Below is the circuit symbol for a typical
relay. The relay shown below is a normally open relay in its
inoperative state i.e The arm is in the open position.
Relays can have either 4 or 5 terminals on the base. The
circuit of the relay is shown on the base or the side of the
housing. There are 2 types of numbering convention for the
relay terminals, both of which are shown below.
Below is a circuit diagram to show the function and
operation of a relay in a simple circuit.
The current from a battery for example flows through the
wires to the high power normally open switch (The arm
between pins 30 & 87A) and the low power coil (The box
between pins 85 & 86). As you can see in the example above
the lamp is in not illuminated, because the switch is open.
For the relay to operate there needs to be current flow
through the low power coil i.e Current in to the coil then
through to an earth. The current passes through the relay coil
and creates a magnetic field, this magnetic field is strong
enough to ‘grab’ the high power normally open switch.
The magnetic field pulls the switch from it’s normally open
contact to a normally closed contact. The normally closed
contact has a path to an earth, in this case it goes through a
lamp. The high power current then flows through the high power
normally open switch through the lamp and then to an earth.
This can be seen more clearly in the diagram below.Lamp
Illuminates
Busbars
A busbar is where a electrical
supply is fed into a conductive
bar, wire or pcb track and various modules or components
‘tap’ into this busbar to draw their required power. The
Central Electronic Module has 4 of these busbars internally,
each of which is supplied from an external power supply,
that supply can be a battery feed, ignition feed or a switched
supply.
The symbol shown below is the symbol used on the circuits
for a busbar, the number inside the box refers to the busbar
number in the Central Electronic Module.
Fuses
A fuse is a device used to protect a module or component
from excessive electrical current which can cause damage or
destroy that module or component. In practice the fuse is
placed in between the power source and the module or
component that is being protected.
The size or ‘Rating’ of the fuse in amps is calculated
according to the power requirements of the module or
component it is protecting with other factors being taken
into consideration. If the rating has been calculated correctly
then the fuse will ‘blow’ when excessive current passes
through it before any harm or permanent damage occurs to
the module or component it is protecting.

Electronics Training Programme
SYSTEM LAYOUT
V8 Vantage Layout
Bluetooth enabled and
paired phone
Bluetooth receiver module
Amplifier module
LED Indicator (Bluetooth display module)
Front speaker Switcher box
Microphone Steering column control
switches
Power Supply

Door speaker (drivers side) Door speaker
(passenger side)

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Electronics Training Programme
DB9 Layout
Bluetooth enabled and
paired phone
Bluetooth receiver module
Microphone
Amplifier module
Power Supply
Steering column control switches
LED Indicator (Bluetooth display module)
Door speaker (drivers side) Door speaker
(passenger side)

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Electronics Training Programme
INPUTS
The Bluetooth system relies on a number of signals it receives either from the car (via hard wiring) or
the users phone (via wireless Bluetooth communication network).

The Bluetooth system will only function if the us ers mobile phone has Bluetooth enabled and it is
‘paired’ to the car. For more information refer to the user’s guide for your mobile phone.

V8 Vantage Power Supplies
Description Supplied From Source Protection
Wakeup signal Central Electronic Module Comfort Relay F68 (5 Amp)
Power supply 1 Central Electronic Module Interior Lights Relay F46 (5Amp)
Power supply 2 Central Electronic Module Interior Lights Relay F46 (5Amp)

DB9 Power Supplies
Description Supplied From Source Protection
Wakeup signal Central Electronic Module Comfort Relay F69 (5 Amp)
Power supply 1 Central Electronic Module Interior Lights Relay F46 (5Amp)
Power supply 2 Central Electronic Module Interior Lights Relay F46 (5Amp)

V8 Vantage Signal Inputs
Input Description Signal Characteristic
MIC In Input signal from microphone Varying current signal direct from microphone
Keypad Steering wheel controls input Variable resistance to earth signal

DB9 Signal Inputs
Input Description Signal Characteristic
MIC In + Input signal from microphone Varying current signal supplied via amplifier
MIC In - Input signal from microphone Varying current signal supplied via amplifier
Keypad Steering wheel controls inpu t Variable resistance to earth

Screens
Some of the signals in and out of the Bluetooth modu le require screening to avoid interference being
picked up. A signal screen is a single wire running along side t he signal wire(s) which will absorb
electro magnetic interference (EMI).

The Bluetooth module on the V8 Vantage features only one screen so as to protect the signal from the
microphone. This screen wire is simply an earth but it is also used as a datum from which to reference
the microphone signal.

The Bluetooth module used on DB9’s features two screens. One is as on the V8 Vantage but is used
only as a screen (because the microphone signal from the amplifie r has two signal wires) and no
datum is required. The second screen on the module is used to screen the ‘Lineout’ signals to the
amplifier. As with the microphone scr een this wire is connected to earth.

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Electronics Training Programme
DIAGNOSTICS
V8 Vantage Connector Pin Allocation
Pin
Number Signal Name Input or
Output Description
3 WAKEUP I Module ignition input from Comfort
Relay via F68
4 MIC (SCRN) I Microphone GND
5 MIC IN+ I Signal input for single-ended
microphone direct from microphone
8 KEYPAD I Input signal from keypad on steering wheel
12 UIM LED O For Active Call LED (amber) – Earth
side switch
13 RADIO MUTE O Mute line to radio (active Low)
14 UIM LED O For Bluetooth Status LED(Blue) – Earth side switch
15 GND I Main Battery Ground
16 GND I Main Battery Ground
23 HF_SPKR + O Audio Output +
24 HF_SPKR + O Audio Output -
31 VPWR I Power supply from Interior Light Relay via F46
32 VPWR I Power supply from Interior Light Relay via F46

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Electronics Training Programme
DB9 Connector Pin Allocation
Pin
Number Signal Name Input or
Output Description
3 IGN I Module ignition input from Comfort
Relay via F69
4 MIC (SCRN) I Microphone GND or Shield
5 MIC IN+ I Signal input for single-ended or
differential mic.
6 MIC IN- I Signal input for differential microphone
8 KEYPAD I Input signal from keypad on steering
wheel
12 UIM LED O For Active Call LED (amber) – Earth side switch
13 RADIO MUTE O Mute line to radio (active Low)
14 UIM LED O For Bluetooth Status LED(Blue) – Earth side switch
15 GND I Main Battery Ground
16 GND I Main Battery Ground
22 LINEOUT (SCRN) I Audio output screen
25 LINEOUT+ O Audio Output +
26 LINEOUT- O Audio Output -
31 VPWR I Power supply from Interior Light Relay via F46
32 VPWR I Power supply from Interior Light Relay via F46

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