2010 ASTON MARTIN V8 VANTAGE brake sensor

Anti-lock Braking System (ABS) (06.09)
Brake system (06.00)
Issue 4, November 2008 Workshop Manual 6-9-1
Brake system (06.00)
Anti-lock Braking System (ABS) (06.09)
The anti-lock braking system (ABS) is a four-channel system
having independent inputs from all four-wheel speed
sensors.
The ABS module, monitors signals from the sensors to
calculate, brake slip and the acceleration / deceleration of
individual wheels. When the brake pedal is depressed, and
the ABS module detects incipient wheel lock-up from the
incoming signals, it triggers the re-circulation pump inside
the module’s hydraulic modulator, and the solenoid valves
for the wheel(s) concerned. Brake pressure, is then
modulated to increase / decrease or remain constant at the
wheel(s) concerned until whee l lock-up is eliminated. The
ABS provides self-diagnosis and any malfunction within the
system will be indicated to the dr iver by the illumination of
the brake warning light and ‘ABS FAULT’ displayed in the
message centre right. Should a fault develop within the ABS,
the brake system will operate conventionally and with the
same standard of performanc e as a vehicle not equipped
with ABS.
Dynamic Stability Control
Dynamic Stability Control (DSC ) is a closed-loop system
designed to enhance driving safety by improving vehicle
handling when the tyres are at the limits of their grip
capabilities. This is achieved through instantaneous,
electronically controlled, reduction of engine torque and
strategic application of the brakes at individual wheels.
By using the principle that by controlling the brakes
individually it is possible, to an extent, to steer the vehicle.
This principle can be used to enhance driving safety by
correcting the vehicle’s yaw moment (turning force), when
the vehicle fails to follow th e driver’s steering inputs.
Concept
Satisfactory handling is determined according to whether a
vehicle maintains a path, wh ich accurately reflects the
driver

Anti-lock Braking System (ABS) (06.09)
Brake system (06.00)
6-9-2 Workshop Manual Issue 4, November 2008
difference between the ideal and actual response within a
tolerance band. This directly influences the forces on the
tires to generate a corrective yaw moment to reduce the side
forces of the tires where appropriate
System Overview
The DSC system embraces capabilities far beyond that of
ABS, or ABS and traction control combined, while relying on
the components of these systems. It also incorporates these
additional sensors for measur ing the vehicle’s motion and
brake system pressure:
Ya w r a t e s e n s o r - located centrally on the transmission
tunnel.
Lateral acceleration sensor - integrated with the yaw rate
sensor.
Steering angle sensor - located on the upper steering
column.
Pressure transducer - located on master cylinder.
The ABS / DSC module supports data exchange with other
vehicle electronic systems via the CAN network; the module
also enables diagnostic interrogation using WDS.
The following components register driver demand and the
ABS / DSC module processes their signals as a basis for
defining an ideal response:
PCM - position of accelerator pedal.
Brake master cylinder pressure transducer - driver’s
braking effort.
Steering angle sensor - position of steering wheel.
There are many supplementary parameters also included in
the processing calculations these include the coefficient of
friction and vehicle speed. The ABS / DSC module monitors
these factors based on signals transmitted by the sensors for:
• Wheel speed
• Lateral acceleration
• Brake pressure
• Yaw rate
Using these parameters, the function of the ABS / DSC
module is to determine the current vehicle status based on
the yaw-rate signal and the slip as estimated by the ABS /
DSC module. It then maintains the vehicle response within
a tolerance of the ‘normal’ behaviour, which is easily
controlled by the driver.
In order to generate the desired yaw behaviour the ABS /
DSC module controls the selected wheels using the ABS
hydraulic system and engine control system. In the event of
engine intervention, the ABS / DSC module calculates the
torque which should be supplied by the engine to the
wheels, and relays this request signal to the PCM which
implements the torque request.
The PCM receives signals from the DSC system via the CAN
bus and reduces engine torque as follows:
• The throttle is positioned to provide the requested engine target torque. • During the transient phase of torque reduction caused by
mechanical and combustion delays, other alternative
torque reduction methods are used to provide a quicker
response.
• The ignition is retarded and / or the fuel is cut-off at the injectors at selected cylinders.
• Ignition and fuelling are reinstated when the engine torque reaches the requested value
Operation Summary
• DSC is switched ‘ON’ when the engine is started
• When the system is operating , the DSC light in the instrument cluster will flash, at the rate of twice a second
• DSC can be switched ‘OFF / ON’ by pressing the DSC switch
• The DSC light in the instru ment cluster will illuminate
continuously when the system is switched ‘Off’.
• ‘DSC OFF’ will be displayed in the message centre right to indicate the system has been switched ‘OFF’
• A malfunction in the traction control system will be indicated to the driver by the following:
• The DSC light in the instru ment cluster will illuminate
continuously
• The message ‘DSC NOT AVAILABLE’ will be displayed in the message centre right
• If vehicle speed control is engaged it will automatically disengage when traction control is operating .
Traction Control
Traction control is a function of DSC, and is operated in
association with DSC. Traction control prevents excessive
wheel-spin at standing starts, or during acceleration. Wheel-
spin is usually caused by ex cessive use of the accelerator
pedal, or slippery, loose or bumpy road surfaces. To prevent
excessive wheel-spin and mainta in vehicle stability such
situations are overcome by the intervention of the traction
control system by:
• Braking the driven-wheel when it starts to slip
• And / or adapting the engine torque to a level corresponding to the traction available on the road
surface.
Functional Description
Traction control uses the ABS electronic and mechanical /
hydraulic hardware with additional valves to control the
braking pressure at the calipe rs. An engine interface also
enables the engine to respond to torque reduction requests
from the traction control. As with ABS, the signals from the
wheel-speed sensors are supplied to the ABS module, where
they are used to calculate the wheel-slip of the individual
wheels. Traction control intervention is initiated if the slip at
one of the wheels is excessive.

Anti-lock Braking System (ABS) (06.09)
Brake system (06.00)
Issue 4, November 2008 Workshop Manual 6-9-3
Engine Intervention
In the event of wheel-slip the ABS / DSC module calculates
the torque, which should be applied by the engine to reduce
the wheel-slip (this torque does not exceed driver demand).
Engine torque reduction is then requested from the PCM via
the CAN bus. The PCM, in response to these signals, reduces
engine torque by controlling the ignition and fuelling. A
traction control gearshift pattern is automatically selected
within the automatic transmission software whenever
traction control is active.
Brake Intervention
This function operates by increasing the pressure in the
brake caliper of the slipping wheel, by closing the separation
valve and the inlet valve of the non-slipping wheel and
running the modulator pump. This takes fluid from the fluid
reservoir via the non-actuated master cylinder and
pressurizes the brake caliper. The pressure is modulated at
the caliper via the inlet and outlet valves to achieve the
desired wheel-slip target to maximize traction.
ABS / DSC Circuit
Specifications
SR,05UR,05YR,0.5NR,0.5
WR,05NR,05
YG,05WG,05
YU,05WU,05
W,05N,05
W,0.5U,0.5R,0.5
P,0.5Y,0.5
B,0.5WG,0.5GB,0.5
B,0.5BG,0.5
GW,0.5
P,0.5
U,0.5
U,3.0
BK,1.0BK,1.0
P,0.35P,0.35P,0.35 U,3.0
WG,05YG,05
WU,05
SR,05UR,05YR,0.5NR,0.5
WG,05YG,05
WU,05
WG,05YG,05
WU,05YU,05YU,05YU,05Module-ABS
OBD2-Body (B)
Earth-Module ABSEarth-Module ABS
C1184-18C2410-6
Sensor-Brake Pressure
Sensor-Brake Pedal Travel
Sensor-Rear ABS-LH
C0746-7C0746-6
C0746-5
Switch-Brake Boost
Sensor-Yawrate / Acceleration
C2411-6C2411-5C2411-4
C2411-3
C0144-7C0144-3
C0144-2
Sensor-Front ABS-LH
Sensor-Front ABS-RH
C2410-10C2410-9
C2410-8
Sensor-Rear ABS-RH
C0746-4C0144-1C2410-7
C0877-7
K-LINESPL50-KL/FA
C0362-1C0434-1
C2444-2
SIGC2444-1
GND
C2444-3
SENSP
C2446-2
GNDC2446-1
SENSPT
C2446-3
SIG
C0501-47
GNDC0501-16
GND
C0501-2K-LINE
C0501-24
GND
C0501-31
PWM
C0501-30
NC
C0501-25
CAN HS-
C0501-28
SIGC0501-27
NO
C0501-29
CAN HS+C0501-6
CLUST_SP
C0501-17
PWR
C0501-5
GND
C0501-32BATT FEED
C0501-7
SENSPT
C0501-3 SIG
C0501-20 SIGC0501-19
GND
C0501-18 SENSP
C0501-4IGN FEED
C0501-46
F/L/GNDC0501-45
F/L/SIG
C0501-42
R/R/GNDC0501-43
R/R/SIG
C0501-36
R/L/SIG
C0501-34
F/R/SIGC0501-33
F/R/GND
C0501-1
BATT FEEDC0501-37
R/L/GND
C2448-5
C2448-3
C2448-2C2448-1
C2448-4
C1656-3 CLUS_SPC1656-2
CAN HS+C1656-1 CAN HS-
C1656-5
GND
C0516-2-C0516-1+
C0517-2
-C0517-1+
C0502-1
+
C0503-2 -C0503-1+
C0502-2 -
Sensor
Steering Angle
Sheet 61
F4
30.0 AmpsRelay 1
Underbonnet Fusebox
DIODE 1
F28
10.0 Amps
F20
30.0 Amps
F19
30.0 Amps
Earth
Steering Angle
Sensor
C0576-1
C0577-4C2608-1 VBATT
C0573-2
C0571-3
C0573-3
C0578-8SPL5-VIGN/FOR
C1672-5
VPWRC1672-8
GND
011-6-003
Oils/Greases
Brake FluidCastrol Response Super Dot 4
Torque Figures
DescriptionNm.lb. / ft.
Modulator to Bracket 5 4
Modulator / Bracket to body 9 7
Brake hose unions 17 1413
10.5
17 Nm. 17 Nm.
17 Nm.
14 Nm.
14 Nm. 14 Nm.

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/Electronic Control (18.00)
May 2007 Workshop Manual 18-1-29
40. Under vehicle
41. Disconnect petrol tank mult iplug and release from body
(see Fig. 10).
42. Remove harness clips (x2) (see Fig. 11).
43. Release grommet and push harness into passenger compartment. 44. Disconnect Fuel pump modu
le, parking aid module (x2)
and pre-tensioner multiplugs (clipped to body) (see Fig.
12).
45. Remove earth header (see Fig. 13).
46. Disconnect crash sensor and parking brake multiplugs.
47. Remove clips (x13).
Fig. 10
Fig. 11
$
$$
Fig. 12
Fig. 13
$
$$

Wiring and Circuit Protection (18.01)
Electric Distribution/Electronic Control (18.00)
May 2007 Workshop Manual 18-1-35
11. Connect door harness to main harness multiplug and
secure boot.
12. Connect Crash sensor an d parking brake multiplugs.
13. Connect Fuel pump module, parking aid module (x2) and pre-tensioner multiplugs (clip to body).
14. Install earth header.
15. Install clips (x13).
16. Connect petrol tank multiplug and secure to body
17. Install harness clips (x2).
18. Pull harness from passenger compartment and secure grommet.
19. Connect crash sensor, battery disconnect switch and pre-tensioner multiplugs (clip to body x2).
20. Install battery header.
21. Install earth headers (x2).
22. Secure in-line fuse to body.
23. Secure harness to floor (bolts x4).
24. Install clips (x8).
25. Feed harness into tailgate area and secure grommet (LH).
26. Connect LH tailgate harness multiplug (clip to body).
27. Install LH harness clips (x3).
28. Connect RH tailgate ha rness multiplug (clipped to
body).
29. Feed harness into tailgate area and secure grommet (RH).
30. Install RH harness clips (x4).
31. Install nuts (x7) harness to tunnel.
32. Install earth headers (x2).
33. Connect Airbag module (x2) multiplugs.
34. Install harness clips (x3).
35. Install nuts (x3) harness to tunnel.
36. Install earth headers (x2).
37. Connect Yaw sensor multiplug.
38. Install earth headers (x2).
39. Install nuts (x3) harness to front bulkhead.
40. Install harness clips (x4).
41. Connect fuel filler flap release and interior light
multiplugs.
42. Push rear light harness through body and secure grommet.
43. Install new harness clips (x7).
44. Pull harness from interior, connect Lucar connectors (x2) to AM/FM tuner and clip service loop.
45. Connect GPS (x2) and AM/FM tuner multiplugs.
46. Install bolts (x4) and earth strap for Satellite Navigation mounting plate access.
47. Connect rear bumper harness (x2) and Subframe harness multiplugs (clipped to body x1).
48. Push harness into w/arch area and secure grommet.
49. Install wires to earth headers (x3).
50. Push rear light harness through body and fit grommet. 51. Secure harness to body (x3).
52. Connect Interior light, a
ccessory sockets (x2), battery
disconnect switch, power plug (clipped to body x4).
53. Install new harness clips (x4).
54. Feed harness from cabin th rough bulkhead into under
bonnet area and secure grommet.
55. Connect multiplugs forward harness to main harness (x3) (clip to body).
56. Connect (bolted) multiplug forward harness to main harness (clip to body).
57. Install brake booster (see Workshop Manual procedure 06.07.AB Brake Booster - RHD - Renew
58. Install footrest (bolts x4).
59. Install handbrake lever (bolts x4).
60. Install front floor carpet and a post trim panel.
61. Install multimedia module (see Workshop Manual procedure 19.07.BB Module - Multi Media - Renew).
62. Position LH and RH rear lamp assemblies and connect
multiplugs (x2).
63. Install rubber seals (x3), plain washers (x3), and star washers (x3). Install and tighten nuts (x3).
64. Position fusebox, connect main battery feed, install and torque tighten nut, install terminal cover.
65. Connect multiplugs (x2) and install fusebox in mounting bracket.
66. Install mobility kit.
67. Install tyre sealant bottle.
68. Install power amplifier (see Workshop Manual procedure 15.01.AB Power Amplifier - Renew).
69. Fit rear floor carpet - check procedure
70. Connect multiplug (x1) subwoofer.
71. Install subwoofer (nut x1 and bolt x1).
72. Install seat belt bracket (bolts x4).
73. Install speaker to LH and RH trim moulding (nuts x6).
74. Connect multiplug (x2) LH and RH speaker
75. Feed seatbelt/s through quarter trim moulding.
76. Install quarter trim moulding (bolts x2 and screw x1).
77. Install RH and LH quarter trim middle panel, secure
with clips, Install and tighten screw.
78. Install RH rear wheel arch liner (see Workshop Manual procedure 01.02.JB Wheel Arch Liner - Rear - RH -
Renew).
79. Install central electronic module (see Workshop Manual procedure 18.01.LC Module - Central Electronic -
Renew).
80. Install instrument panel (see Workshop Manual procedure 01.12.AB Instrument Panel - Facia Assembly
- Remove for Access and Refit).
81. Install front header panel (see Workshop Manual procedure 01.05.BB Panel Assembly - Header - Renew).
82. Connect vehicle battery.

Special Tools - Pictorial Index
Appendix & Glossary
May 2007 Workshop Manual 20-1-7
204-523 (Ball Joint Splitter)
418-583 (Oxygen Sensor Diagnostic Lead)
204-524 (Front Suspension Support)
501-F111 (Door Service Trolley)
Part No./Description

&
501-115 (Front Veneer Removal)
206-100 (Brake Hose Install)
501-112 (Wiper Linkage to Wiper Motor)
206-103 (Handbrake Cable Removal)
Part No./Description



AML EOBD System Operation Summary

Rory O’Curry Aston Martin Lagonda CONFIDENTIAL 1 May 2009
[email protected] AML EOBD Monitors 07 ROC.doc Page 17 of 43

The system monitor also determines the validity of an y inputs to the electronic throttle control feature by
checking for opens, shorts, out-of-range values and inconsistencies.

Throttle Position Sensors:
DTCs P0121 Throttle position sensor A circ uit range/performance (Closed in bore
out of range fault)
P0122 Throttle position sensor A circuit low input
P0123 Throttle position sensor A circuit high input
P0124 Throttle position sensor A circuit intermittent
P0221 Throttle position sensor B circuit range/performance (Closed in bore
out of range fault)
P0222 Throttle position sensor B circuit low input
P0223 Throttle position sensor B circuit high input
P0224 Throttle position sensor B circuit intermittent
P2135 Throttle position sensor A/B voltage correlation
Monitor execution continuous
Monitor Sequence none
Monitoring Duration Less than 200ms to register a fault

Accelerator Pedal Position Sensors:
DTCs P2121 Pedal position sensor D circuit range/performance
P2122 Pedal position sensor D circuit low input
P2123 Pedal position sensor D circuit high input
P2124 Pedal position sensor D circuit intermittent
P2126 Pedal position sensor E circuit range/performance
P2127 Pedal position sensor E circuit low input
P2128 Pedal position sensor E circuit high input
P2129 Pedal position sensor E circuit intermittent
P2138 Pedal position sensor D/E voltage correlation
Monitor execution continuous
Monitor Sequence none
Monitoring Duration Less than 200ms to register a fault

Brake Pedal Switches:
DTCs P0504 Brake switch A/B correlation (BPS on when BLS is off)
P0571 Brake switch A circuit (BPS failed)
P0703 Brake switch B circuit (BLS failed)
P1572 Brake system input failure (BLS failed then BPS failed)
P1703 Brake switch out of self test range (Set when brake is on for KOEO
test or when brake on or off state is not seen for KOER test)
Monitor execution continuous
Monitor Sequence none
Monitoring Duration Not time dependent