2010 ASTON MARTIN V8 VANTAGE relay

May 2007 Workshop Manual 18-1-1
Electric Distribution/Electronic Control (18.00)
Contents
Wiring and Circuit Protection (18.01) ................. 18-1-2Fuse Boxes .............................................................. 1-2 Engine Bay Fuse/Relay Box..................................... 1-2
Central Electronics Module Fusebox....................... 1-3
How to Read the Circuits........................................ 1-4 Wires ..................................................................... 1-4
Controller Area Network (CAN).............................. 1-5
Media Oriented System Transport (MOST) ............. 1-6
Connectors ............................................................. 1-6 Splices ................................................................... 1-7
Relays .................................................................... 1-8
Busbars .................................................................. 1-8
Fuses ..................................................................... 1-8
Resistors................................................................. 1-9
Lamps .................................................................... 1-9
Switches ................................................................ 1-9
Motors and Pumps ................................................. 1-9
Diodes ................................................................. 1-10
Transistor ............................................................. 1-10
Earth / Ground ..................................................... 1-10
Maintenance ......................................................... 1-11 Forward Harness-Renew ...................................... 1-11
Header Latch Harness-Renew
(Roadster Only) .................................................... 1-12
Roof Cylinder Wiring Harness-Renew
(Roadster Only) .................................................... 1-14
Transaxle Harness-Renew .................................... 1-21
Engine Wiring Harness-Renew ............................. 1-22
Facia Harness-Renew ........................................... 1-25
Cabin Harness Assembly-Renew .......................... 1-26
Passenger Door Harness-Renew ........................... 1-36
Driver’s Door Harness-Renew .............................. 1-36
Rear Bumper Harness-Renew .............................. 1-37
Transaxle Harness-Renew .................................... 1-37
Axle Transmission Harness-Renew
-Sportshift Only.................................................... 1-38
Tailgate Harness-Renew ....................................... 1-38
Vehicle Control System (18.08) ........................... 18-2-1 Module Configuration ............................................ 2-1 Principles of Operation .......................................... 2-1
Market Configuration ............................................. 2-1
Customer Configuration ......................................... 2-1
Data Buses .............................................................. 2-1
Network Bus ........................................................... 2-1 MOST.................................................................... 2-1
Module Locations ................................................... 2-2

Wiring and Circuit Protection (18.01)
Electric Distribution/Electronic Control (18.00)
May 2007 Workshop Manual 18-1-3
F26 20A Headlamp wash pump (HID Only)
F27 25A Spare
F28 10A Module - ABS/Key Reader and Steering angle sensors
F29 25A Spare
F30 5A Alternator battery sensing
F31 30A Heated front screen
F32 30A Wiper (slow)
F33 30A Wiper (fast)
F34 20A Heater Blower motor
F35 60A Cooling fan module
Central
Electronics
Module
Fusebox
Fuse/
RelayRatingFunction
F43 10A Multi media module display/Phone/GPS tuner/Media player
F44 10A Airbag module
F45 15A Accessory socket and illumination
F46 5A Driver Information/Master light switch/Glove box relay/Master lock switch Battery Off
switch/Boot release switch/Speaker-switch/
JBFB-R7/Centre console module/Bluetooth
module
F47 5A Interior lamps (front)/Seat switches/Fuel flap switch/glovebox switch/Rear power
illumination
F48 15A Windscreen wash pump
F49 10A Occupant detect (Driver and passenger seat)/Airbag module
F50
F51 10A Diagnostic connectors/Centre stack switches
F52 5A Start button
F53 10A Module - HID lighting
F54 10A Engine fuse box/Boot fuse box/Tyre pressure monitor module/Satellite navigation relay
F55
F56 10A Centre console module/Sounder module/
Hazard switch
F57 15A Diagnostic connectors/Brake pedal switch
F58 10A High beam (RH)
F59 10A High beam (LH)
F60 15A Drivers seat power (Heating)
F61 15A Passenger seat power (Heating)
F62 20A A/C module
F63 20A
F64 5A AM/FM receiver module/Traffic Monitoring Control module (TMC)
F65 5A Media player/Multi media module and display/Audio amplifier
F66 10A Centre console module/Infotainment control module
F67
F68
F69 5A BFB-R5
F70
F71
F72
F73
F74 15A Fuel pump
F75
F76
F77 15A Boot power socket
F78
F79 5A Reversing lamps/Module - Parking aid
F80 5A Battery ‘Off’ switch
F81 20A Ignition switch
F82 25A Passenger door module
F83 25A Driver door module
F84 25A Passenger seat power/Passenger seat switchpack
F85 25A Driver seat power/Driver seat switchpack
F86 5A Start button, Driver and passenger seats

Wiring and Circuit Protection (18.01)
Electric Distribution/E lectronic Control (18.00)
18-1-4 Workshop Manual May 2007
How to Read the Circuits
Below is a simple guide to what symbols mean on the circuit
diagrams. For some of the symbols there are descriptions as
to how they function.
Wires
Wires vary in size to allow diffe rent current to be carried. For
example a wire with a diamet er of 0.50mm (This is the
diameter of all the internal copper strands together) will
carry 11A (dependant on ambient temperature) whilst a wire
with a diameter of 2.00mm will carry 25A.
Twisted Wires
The ‘figure of 8’ shown on circuits as below denotes a
twisted wire and shows the wires that are twisted together.
A wire generates a certain amount of ‘electrical noise’ when
a current is passed through it. By twisting the 2 wires
together the ‘electrical noise’ is cancelled out on each wire
by the opposing wire. This is used more on sensors and
audio speakers.

Screened and Twisted Screen Wires
The signals through a wire can be affected by externally
generated electrical noise. To reduce the external
interference the wires are placed inside a conductive sleeve.
One end of the conductive sleeve is always open whilst the
other end can be terminated to a ground, to a component,
or left open.
Boot Fusebox
Fuse/

RelayRatingFunction
F1 5A Spare
F2 20A Spare
F3 30A Heated rear window
F4 20A Spare
F5 30A Spare
F6 20A Spare
F7 5A Battery disconnect switch (BDS) power
F8 20A Spare
F9 20A Tracker
F10 30A Spare
F11 20A Spare
F12 20A Spare
F13 10A Spare
F14 5A Rear parking assistance module (optional)
F15 5A Spare
F16 30A Spare
F17 5A Spare
F18 30A Audio amplifier
F19 5A Spare
F20 10A Canister vent
F21 30A Spare
F22 20A Exhaust by-pass and vacuum pump
Wire numbers have been deleted from the original
engineering circuits. This al lows the type size to be
increased for improved legibil ity of the service circuits.
173 WR 2.0
Wire No.
Colour
Size
908 GU MAPM 05
Wire No.
Colour
MAP (Defines twisted pair)
Size

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.

Wiring and Circuit Protection (18.01)
Electric Distribution/E lectronic Control (18.00)
18-1-20 Workshop Manual May 2007
41. Remove harness/pipe cable ties (see Fig. 22).
42. Disconnect pump multiplug (see Fig. 23).43. Disconnect pump mult
iplug (see Fig. 24).
44. Remove pump relays.
45. Remove end cover (locating tabs x2).
46. Disconnect pump lucar conne ctors (x2) (see Fig. 25).
47. Remove harness from vehicle.
Installation
1. Install harness to approximate route on vehicle.
2. Connect pump lucar connectors.
3. Install pump end cover.
4. Connect pump multiplugs (x2).
5. Install pump relays (x2).
6. Install pump casing and secure velcro.
7. Install harness/pipe cable ties.
8. Install motor and casing under tonneau onto location posts.
9. Install cylinder pivot bracket and connect cylinder to bracket.

Fig. 22

Fig. 23
Fig. 24

Fig. 25

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

31

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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