1997 ASTON MARTIN DB7 airbag

Electrics
Electrical Component Location and Wiring Information - Up to 97 MY
Component Index 6-19
Component Location Diagrams 6-23
Electronic Control Unit Location Diagram 6-38
Relay Panel, Fusebox and Earth Point Location Diagram 6-39
Loom Location Diagrams 6-40
Wiring Diagrams and Splice Lists 6-42
Electrical Component Location and Wiring Information - 97 MY
Component Index 6-43
Component Location Diagrams 6-47
Relay Location Diagrams 6-64
Wiring Diagrams and Splice Lists 6-68
Airbag System - Repair and Diagnostic Procedures 6-69
Seat Belt Pretensioner System - Repair and Diagnostic Procedures 6-101
Security System (Restricted Circulation) 6-111
PATS System (Restricted Circulation) 6-121
97.5 Model Year
6.6.03 Seat Removal (97.5 MY)
6.6.08 Seat Control Module (97.5 MY)
6-127
6-128
6-2 April! 997

^7
Electrics
Component Index Sheet 1-97 MY
Component
Name
ABS ECU
ABS Wheel Speed Sensor - Front RH
ABS Wheel Speed Sensor - Front LH
ABS Wheel Speed Sensor - Rear RH
ABS Wheel Speed Sensor - Rear LH
Airbag Crash Sensor RH
Airbag Crash Sensor LH
Airbag Diagnostic Monitor
Airbag (Drivers)
Airbag (Passengers)
Airbag Safing Sensor LHD
Air Conditioning Compressor Clutch
Air Conditioning Control
Air Conditioning Trinary Switch
Air Conditioning Unit
Air Pump
Air Temperature Sensor (IAT1)
Air Temperature Sensor (IAT2)
Alarm LED Inverter
Alarm Sounder
Alternator (Generator)
Ambient Temperature Sensor
Barometric Pressure Sensor
Blower Fan LH
Blower Fan RH
Bonnet Switch
Boot Lamp LH
Boot Lamp RH
Boot Lock Actuator
Brake Fluid Level Sensor
Camshaft Sensor (CMP)
Capacitor (Generator)
Catalyst Overtemperature/Speed Warning Module
CD Autochanger
Central Locking Unit '
Cigar Lighter
Column Switchgear Assembly
Coolant Low Level Sensor
Coolant Temperature Sensor (ECT)
Coolant Temperature Sensor - Temp Gauge
Courtesy Light
Crankshaft Position Sensor (CKP)
Cruise Control Clutch Switch (RHD)
Cruise Control Disable and Stop Lamp Switch
Cruise Control On/Off Switch
Cruise Control Servo Unit
Cruise Control Set Switch
Diagnostic Socket - Lower
Diagnostic Socket - Upper
Door Closed Microswitch (Drivers)
Door Closed Microswitch (Passengers)
Door Lock Motor (Drivers)
Door Lock Motor (Passengers)
Door Lock Switch (Drivers)
Component
Location
(Figure No.-ltem No.)
1-5
1-3
1-3
8-1
8-1
2-3
2-3
4-2
9-6
9-1
2-6
9-4
9-2
9-5
9-2
9-3
3-7
3-11
7-8
2-4
3-12
1-1
8-6
10-10
10-4
2-2
10-8
10-6
10-7
16-3
3-2
1-2
4-8
5-5
6-10
6-5
10-5
10-3
3-4
3-3
10-9
3-1
10-2
1-4
6-6
2-8
6-7
11-3
11-3
7-6
7-6
11-6
11-9
11-5
Circuit
Reference
(Sheet No.-Coordinates)
20-A1
20-D2
20-D3
20-B6
20-C6
3-D1
1-C3
11-C6
9-A3
11-C4
12-B4
3-C1
3-D3
3-D1
11-CI
1-C2
5-C1
5-B3
14-B6
1-B2
5-A6
1-A2
4-A4
8-A3
12-C3
1-C5
15-A4
16-D3
16-C6
20-B3
5-C1
5-A5
11-C3 Japan Only
10-B3 Rear of Radio
12-D4
13-A3
9-A2
3-A3
5-B1
5-C1
9-B1
5-A2
3-C5
9-A3
13-A5
2-A6
13-B5
10-A6
10-A5
21-A2
22-A2
21-B1
22-Bl
21-A2
September 1996 6-43

NO COLOUF 890 N 891
NK
892 N 893 P 894 N 895 NW 896 N 131
NS
897 N 898 P 88SN 899 NP 900 W 339 WR 901
W
902
0
903 WK 904 OW 905
W
188
G
906 N 907 PN

PIN 1 ? 3 4 S 6 7 8 9 10 II 1? 13 14 15 16 17 18 19 ?0 21 22

AREA II.A5-I24 I2.C6 II.A5-I25 IZ.C2-I39 II.A5-126 I2.C3 11.45-125 I2.A4 II.A5-I26
e.B5-7l
II.A6 I2.D2 I2.CI~I29 12.81 I2.CH29 II.B4-I2I II.B5-I28 12.06 I2.CI-I29 II.BI II.A5-I24 1I.B2-II3

25JL25n 27n 29n 3in 33n 35n 37n 39n ''ia,''3rL
24V26V28V3oV,2*34V3sV38V4oV42V44V

NO COLOUF 908 N 909 NG 910
KB
193
KB
911
W
834 G 912
WK 770 10
913
WK
820
0?
914
W
865 LGS 915
N
870 RW 916
KB
297 NS 917
N
918
P
919
N
185
NR
888 N 766 NO

PIN ?3 ?4 25 ?6 27 28 29 30 31 3? 33 34 35 36 37 38 39 40 41 4? 43 44

AREA II.A5-I26 I2.C6 I2.C2-I32 II.CI I2.CI-I29 II.B3 II.B5-I28 II.CI II.B5-I28 11.01 12.01-129 II.B3~II8 II.B4-I23 II.C6 I2.C2-I3; I2.A1 II.A5-I24 II.B4-I22 II.B4-I23 11.81 II.Ae lO.CI
SPL
124 SPL 125 SPL 126
SHEET 10 AREA B6 iF^^i

-«-

SHEET
t
AREA
Bl
GEARBOX
RED

NO COLOUF 182
S

184
0
185
NR
186
BY
187
BU
188
G
189
SP
190
RK
191
GB
192
WS
193
KB
194
YG
195
GP
196
KU
197
BK
198
UN
199
K
PIN
1 2 3
4 5 6 / 8 9 10 II 1? 13 14 15 16 17
18 19 20
AREA 9.D2
I0.B3-III II.A3 12.A3 I2.A3 II.AI I2.A3 10.B2-93 9.A6 9.B4 II.A3 I2.A3 1I.C2-II5 9.A4 10,85-105 I2.A3 I0.A3

AIR CON UNIT
NO COLOUR
PIN
768
B
?70
LG
163
GN
780
W
782
PN
783 RW 784 R

1 2 3 4 5 6
7 8 9 10 II 12
AREA 12.03-143 II.A3 I2.A4 12.01-129 II.B2-II3 II.B2-II4 I0.B4-84
NO COLOUF 817
YO
818
RG
819
OR
379
RU
380
GU
820
GP
821
RW
121
Y
825
BP
731
U
2200
LGY

332
B
PIN 1 2 3 4 5 6 7 8 9 10
II 12 13 14 15 16
AREA 11.03 12.02-134 12.06 I0.B4-I0a 8.DI II.A3 II.B2-II4 8.AI
9.B3-8I
9.B3-83
9.B3-82

12.03-143
<^
• SHEET 13 •AREA B6

NO COLOUR
PIN
AREA 876
RU U
IO.B4-10S 877
RG
W -
I2.BI-I30 SPL
123
-

SPL
122
-

SPL 121
-

SPL
117
SPL
118

c

AUTO
G/BOX HARNESS
SHEET
7 v^ r-
AREA
CI -** »"
cx

NO OOLOUF 830 BG 803 SLG 123
GP
831
GP
832
GB
833 PH 834
0
713
YN
714
YB
835
B
836 BG 52
GP 49 GP
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13

AREA lO.BS-IOt 10.04 S.BI ILC2-II5 I0.C2-I0I 11.02-113 II.A3 9.03 9.03 I2.C2-I30 I2.AI
8.AI 8.AI

CO]
01
EXHAUST
TEMP/
SPEED WARNING
NO COLOUR 837
B
729
PS
838 PS 839
WP
840 WY 841
W
PIN 1 2 3 4 5 6

AREA 12.02-131 9.A4 12.A5 I2.A5
9.B5-87
I2.BI-129 PASSENGER AIRBAG

BINNACLE

I
(=3;

era
ra
i(=r

NO OOLOUF 842
KB
843 BK 600 PR 844 U 620
Y
845 RK 47
RO
646 PN e47LG 824 SR 848 BU 649 RW 850
B
826 SW 851
BY
852 NY 853 RN 854
WB
617
R
855
U
856 BP 857
LGY
817
YO
PIN 1 ? 3 4 5 6 / 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

AREA I2.A1
I0.B5-I0!
8.A3
9.05-86
8.04 I0.B2-93 8.BI II.B2-II3
e.B5-69
10.05 II.B4-I27 II.B2-I14 12.02-131 10.05 12.02 12.03-144
I0.B5-10;
I2.A5 8.03
9.B3-83
9.B3-8I
9.B3-82
11.01
SPL
127 SPL 128

c

IcX
|[=r

NO COLOUR
PIN
AREA 858
RP I
11.04-120 2 859 KP
3 11.06

I BATTERY
~| STUD

NO COLOUI 881
N
882 N 883 N 884
N
885
N
886 N 667
N
886 N
AREA II.A5-I24 II.A5-I26 II.A6 I2.CI ILAI I1.A5-I25 II.B4-I23 I1.B3

CB CD NO COLOUR PIN 883 N I 869 N 2
AREA II.A6 I2.D3
WIPER LOGIC NO COLOUF 874
B
875 0 683 LGG 681 LGW 680 LGN 285
BLG
287
WLG
286
BR
145 LGB
678 LGP 879 LC 676 LGR 880 BS
PIN 1 2 i 4 b 6 7 8 9 10 II 12 13 14 15 16
MODULE AREA I2.C4 II.B4-I2I 9.AI 9.AI 9.AI 12.B3 12.B3 12.B3 12.A4
9.AI IO.Bl-89 9.AI 1I.B2-II6
AIRBAG DIAGNOSTIC MONITOR GREY NO COLOUR 865 LGS 866 ON 867 B 868 YW 869 B 367 YU 870
RW

871 RN 672
RG
873
KU
368 KG
PIN 1 2 3 4 5 6 7 8 9 10 II 12
AREA 11.03-118 12.A6 11.04-119 10.82-92 11.04-119 8.CI II.A3
12.85 12.85
12.
A6 8.CI
AIRBAG DIAGNOSTIC MONITOR BLACK NO COLOUR
860 RP 859 KP 697 KN
861
RP
862
YG

863 OP 369 OW

864
YP

PIN

2 3 4 5 S 7 8 9 10 11 12
AREA
I1.C4-120 II.D4 9.B2 ILC4-I20 12.B5
I2.B6
e.oi

I2.B5

""^^ Wiring Diagram
Model - Aston Martin DB7
Harness Title - Bulkhead LHD - 4
Part No. - B37-84636
Revision - 0 Sheet 11 of 26-97 MY

Electrics
Airbag System
Airbag (Supplementary Restraint System)
Repair Procedures
Description
Two airbaes are fitted to the 97 model year DB7.
The drivers airbag is located in the centre of the
steering wheel (Fig 1-1), the passenger airbag is
located behind the fascia panel (Fig 1-2).
Figure!. Airbag Locations
The following procedures and safety precautions
must be adhered to while handling, installing and
testing airbag modules. Failure to observe these
precautions could cause the airbag to inadvertently
deploy with the risk of personal injury.
The procedures and precautionary guidelines
conform to the 'Handling and storage - The
Explosives Act 1875 & 1923' and to the 'Health and
Safety at Work Act - 1974' or local guidelines as
appropriate.
Safety Precautions and Warnings
Handling Undeployed Airbags
The electrically actuated airbag module contains
sodium azide and sodium nitrate which are
poisonous and extremely flammable substances.
Their contact with
acid,
water or heavy metals may
produce harmful, irritant gases or combustible
compounds.
The airbag module is non-serviceable and must not
be dismantled, punctured, incinerated or welded.
WARNING: Do not attempt any repairs or
electrical measurements on the airbag module.
Never measure the resistance of the airbag module,
as this may cause the airbag to deploy. Suspect
modules must be returned to Aston Martin Lagonda

Limited,
or their importer for replacement.
Tampering or mishandling can result in personal
injury.
Keep away from heat, sparks and open flames. Do
not store at temperatures exceeding 93°C (200°F).
Keep away from electrical equipment as electrical
contact may cause ignition.
Do not drop or impact the airbag module. Always
position the module 'cover-up'.
Ensure that the module connector is protected to
prevent damage. Never carry the airbag module by
the wires or connector.
Store modules in a secure lockable cabinet.
Never position material over the undeployed
module which could be projected and cause injury
in the event of inadvertent deployment.
Do not wrap arms around the module when carrying
and always carry the module with the cover and
vents facing away from the body to avoid personal
injury in the event of inadvertent deployment.
The chemical propellant mixture deploying the
airbag is a solid and therefore inhalation exposure
is unlikely even if the module is ruptured without
deployment.
As far as practical, avoid skin contact
with,
or
ingestion of, the materials present after combustion.
Exposure to high concentrations of propellant
mixture may cause headache, nausea, blurred

vision,
faintness, cyanosis, lowering of blood
pressure, tachycardia and shortness of breath.
WARNING: Sodium azide has been listed as an
'Extraordinary Hazardous Substance or
Carcinogen' by the state of
Massachusetts,
USA.
Sodium azide has been listed on the
'Right
to Know
Hazardous Substance
List'
by the state of New
Jersey and is also regarded as a 'Special Health
Hazard Substance' by the state. The propellant
mixture is sensitive to premature ignition by
electrical sources if not properly protected and
isolated.
September 1996 6-69

Electrics
Airbag System ^^?
Emergency First Aid Procedures
If the airbag is ruptured without deployment and
exposure to the propel lant mixture occurs, observe
the following first-aid treatments:
• Ingestion - Do not induce vomiting and seek
prompt medical attention.
• Skin contact - Immediately wash skin with soap
and water and seek medical attention.
• Eyes - Immediately flush eyes with water for at
least 20 minutes and seek prompt medical

attention.

• Inhalation - Immediately move victim to fresh
air and seek medical attention.
• Physical trauma,
e.g.
burns, abrasions, or impact
due to premature ignition or deployment of the
inflator assembly - Treat symptomatica
I
ly and
seek prompt medical attention.
Safety Procedures
Handling Deployed (Fired) Modules
See 'Emergency First Aid Procedures'
Prevent contact of the inflator with liquids,
combustibles and flammable materials. Failure to
follow these instructions could result in chemical
burns and personal injury.
Ensure that the modules are cool before handling.
After deployment, the airbag surface contains small
deposits of sodium hydroxide which can cause
irritation to the skin and eyes.
When handling deployed airbags, always wear
rubberglovestoBS1651 grade 2 or equivalent, and
chemical resistant goggles to BS 2092 grade 2 or
equivalent.
After handlingdeployed airbags, immediately wash
hands and exposed skin surface areas with mild
soap and water.
Handling Undeployed Damaged Modules
The material inside the module is hermetically
sealed and is completely consumed during
deployment.
No attempt shou
Id
be made to open the modu
le
as
this leads to a risk of exposure to sodium azide.
In the unlikely event of a gas generator being

damaged,
it must be examined by trained personnel
before any attempt is made to remove and/or
deploy.
Full protective clothing must be worn when dealing
with any spillage.
Ruptured units must be stored away from acids,
halogens, heavy metals and metal salts. Damaged
units may produce hydrazoic acid if exposed to
liquids.
Failure to comply with these instructions may result
in fire, noxious fumes and severe personal injury or

death.

Fire Hazard Information
Thermal decomposition or combustion may
produce dense smoke and other dangerous fumes
which infiresituationsformahighlytoxicexplosive.
In the event of a fire, the surrounding area must be
evacuated and all personnel kept well upwind of
the area.
Full fire fighting protective gear and a self contained
breathing apparatus operating in positive pressure
mode must be worn for combating fire. Material
near the fire must be cooled with water spray to
prevent ignition.
Fires should be allowed to burn themselves out if
not threatening to life or property, if fire
is
threatening
to life or property, use copious quantities of water
to extinguish.
Ventilation
Local exhaust ventilation designed by
a
professional
engineer should be provided if vapours, fumes or
dusts are generated whilst working with the airbag
module.
Respiratory Precautions
To prevent the inhalation of dangerous fumes and

dusts,
an approved mask should be worn.
6-70 September 1996

^=2?
Electrics
Airbag System
Eye Protection
Chemical protective goggles are recommended
where there is a possibility of eye contact with the
propellant. Safety glasses with side shields are
recommended for all other operations.
Protective Clothing
Approved protective gloves, overalls and shoes/
boots should be worn.
Handling and Storage Precautions
Do not store airbag modules near live electrical
equipment or circuitry. Store in a dry environment
at ambient temperatures.
Good housekeeping and engineering practices
should be employed to prevent the generation and
accumulation of
dusts.
Store in compliance with all
local state and federal regulations.
Driver and Passenger Airbag Modules
Assembly/Removal/Service Instructions
WARNING: In the event of a vehicle impact where the
airbags and the seatbeltpretensioner (if fitted) are
deployed, the following actions MUST be
performed:
Check the condition of the seatbelts, steering

wheel,
steering column, all connections to airbags,
and the column switchgear connectors for integrity
and damage. If in any
doubt,
replace suspected
parts for new parts.
Replace both crash
sensors,
the
safing sensor
and
the seatbelt pretensioner module (if fitted).
On completion of all repair procedures, switch on
the ignition and check that the
Airbag/SRS
warning
light comes on when the ignition is switched on
and extinguishes after approximately six seconds
indicating satisfactory completion of the airbag
and pretensioner
system
self
tests.

WARNING: Before starting
work,
ensure
that the ignition
switch is in position 'O' and the ignition key is

removed.
Disconnect the battery negative lead
within 12 seconds of switching off the ignition to
prevent the alarm system triggering.
As the airbag control module is equipped with a
back-up power source and due to the risk of the
airbag being inadvertently deployed, wait one
minute or longer after disconnecting the battery
before starting work on the airbag module.
• Disconnectingthe battery negative cable cancels
the memory for the 'one-touch' window down
system and stops the vehicle clock. Reset the
window memory and the clock when work is

completed.

• Never use airbags from other vehicles, always
use new parts.
• After work is completed, reconnect the battery
and perform the airbag warning light check
• Never use electrical probes to check voltage or
electrical resistance of the airbag modules.
• Disconnect the airbag before carrying out any
work on, or in the vicinity of the module, or
when using electric welding equipment.
• Always ensure that the battery negative lead has
been disconnected for at least one minute before
commencing any removal procedure.
September 1996 6-71

Electrics
Airbag System =7?
Spillage and Leakage
If material is spilled or released, contact Aston
Martin Technical Support for advice on clean-up
procedures. All personnel must be kept away from
the contaminated area.
Do not dispose of contaminated propellant or
water into storm or sanitary sewers, ground water
or
soil.

Spills may be reportable to state and/or federal
authorities.
Materials must be disposed of by incineration or
chemical oxidation under carefully controlled
conditions by specially trained individuals and in
accordancewith local stateandfederal regulations.
Scrapping Vehicles with Live Airbags
when scrapping a vehicle with live airbags, first
deploy the airbags in accordance with the following
procedure. This procedure assumes that the airbag
wiring is undamaged
See Handling/Safety Information.
If the airbags are to be removed, see the airbag
module assembly/removal/servicing instructions.
Equipment required:
Four insulation displacement connectors
(scotch locks).
Charged 'slave' battery.
Two 10 metre lengths of
1
mm^ wire fitted with
crocodile clips on one end.
Procedure
WARNING: The deployment procedure must be
carried out outdoors away from other personnel.

1.
Remove any loose debris from around the airbag
modules and ensure that no flammable liquids are
present.

2.
Disconnect the vehicle battery.
WARNING: Always connect to the airbag
first,
as

the bag will deploy immediately on connection to
the battery.
3. Remove the passenger side airbag deployment
door and underscuttle panel.

4.
Remove the drivers side underscuttle panel.
5. Disconnect the airbag connector for the spiral
cassette under the fascia and at the wire (drivers

side).

6. Locate the harness connectors and cut the wires
leading from the airbag just above the mating plug
(passengers side).
Note: The harness connected between the driver's

airbag
and the connector
has
one red
feed
wire and
one

grey/orange return
wire.
The
harness
connected between
the
passenger's
airbag and the connector
has
one blue/

orange
feed wire and one
pinl return wire.
6-72 September1996

^^
Electrics
Airbag System
WARNING: Make the battery connections
last.

The airbag will deploy as the battery connections are made.
Minimum 10 Metres (33 Feet)-
7. Pass the cut ends of the two 10 metre (33ft) link
wires through an open window and connect using
two scotchlocks to the feed and return wires for one

airbag.

8. Closethe vehicle doors and leave the window with
the link wires open.
9. Check that no personnel are in the car or in the area
around the car. Warn personnel in adjacent areas
of the impending airbag deployment.

10.
Move back 10 metres (33ft) and connect the link
harness crocodile clips to the positive and negative
terminals ofthe slave battery; the airbag will deploy
immediately.

11.
Allow the deployed unit to cool for at least 20
minutes and monitor continuously to ensure that
the heat generated during deployment does not
create a fire with spilled liquids or other debris.

12.
Using all appropriate safety precautions (see all
warnings and precautions after the 'Safety
Precautions and Warnings' Heading), enter the
vehicle and cut the link harness wires from the
deployed airbag.

13.
Usingtwonewscotchlocks,connectthelinkharness
to the feed and return wires for the second airbag
and deploy it by repeating steps 7 to 11 of this
procedure.

14.
The vehicle may now be scrapped in the normal
manner with thedeployed airbag modules installed.

15.
In the event of any problems or queries, contact
Aston Martin Lagonda Limited - Technical Services
Department.
Scrapping Vehicles
Air bags

with Deployed

when scrapping a vehicle with a deployed airbag,
first check that all installed airbags have been
deployed or removed.
In the eventthatonly one airbag has beendeployed,
it must be assumed thatthe second airbag is still live
and therefore must be treated using the 'Scrapping
Vehicles with Live Airbags' procedure.
when it is verified that both airbags have been
deployed or removed, the vehicle may
be
scrapped
in the normal manner.
September 1996 6-73