engine ASTON MARTIN DB7 1997 User Guide

NO
colour 177 OW 176 OR 17?
m
179
OP
180 OB lej
OS
182 OK 183 ON 181
OU
185
or
186 BU 187 R 188
U
183 G 190
N

PIN 1 ? 5 4 5 6 1

«
9 10 II li> 13 14 lb 16 17 IS 19
29
AREA
A5 A5 A5 A5 A5 *5 A5 A5 AS A5 A5 B3 B3 BZ B2

SHEET
4
AREA
C3

H

GEARBOX CONNECTOR

»« "draOB
M»
176 OR 179
OP
ISO WR 182 OK 183 ON 184 OU 185 OY 166
8U
177 OW ISI
WR
180 OB
181
OS

1 2 3 4 5 6 7 8 9 10 II 12

.Ji..

"mk
Al Al A2-204 Al Al Al Al Al Al A2-204 Al
Al
OUTPUT SPEED SENSOR
NO COLOUR 197 R 188
U

pm 1
2

AREA
Al Al INPUT SPEED SENSOR
NO COLOUR
PIN
XRET
190
N
I Al
189
G
2 Al

NO COLOUR 145
BG
497 SLC 521
YU
541
YU

547
B
262 BG

PIN 1 2 3
4 5 6 7 8 9
10
II 12 1}
AREA
C2 C5 C2 C2
C5 C2

115.521.541.262
TAPED
IN
LOOM

REVERSE LAMP SWITCH
NO COLOUR
PIN
ARE
I 497 SLG
2 CI
517 B
3 CI

ENGINE HARNESS

"^^ Wiring Diagram
Model
-
Aston Martin
DB7
Coupe
Harness Title
-
Auto/Manual Gearbox
PartNo.-B37-81302
Revision
0
Sheet
7 of 29
-
Up to 97 MY

Electrics
Relay Location Index - 97 MY 5^^?
Relay Locations
Left Forward
Engine Bay LH Side (from front to
Function
Front Fog Lights
rear)
Cruise Control Clutch Switch(Man)
Air Pump
Horn
Daytime Running Lights
Side Lights
Headlamps
Dip Beam
Main Beam
Starter
Left Forward Fusebox
Base Colour
Brown
Purple
Yellow
Red
Blue
Green
Blue
Black
White
Yellow
Relay/Module Cover.
Blue
Pink
Blue
Blue
Blue
Pink
Blue
Blue
Blue
Blue
Location
1
2
3
4
5
6
7
8
9
10
11
Right Forward
Engine Bay LH Side (from front to rear)
Function Base Colour
Air Con (WOT) Blue
Fan Run-On Yellow
Air Con Green
Cooling Fan Fuses (30A x 2) Black
Fan Timer Control Unit Black
Facia Component Panel - RHD Passenger Side - Left to Right
Function Base Colour
Heated Front Screen Timer Relay Yellow
Multi-Function Module Black
Low Coolant Transmitter Module Black
Main Relay (Red Stripe) Red
Auxiliary Load White
Auxiliary Load Black
Fusebox
Heated Front Screen Fuse 40A Black
Door drop glass thermal cut-out White
Fascia Component Panel - RHD Drivers Side - Left to Right
Function
Gearbox Failure Warning
Ignition Load
Courtesy Lights
Indicator/Flasher Unit
Hazard Warning
Heated Rear Window
Rear Fog Light
Dimmer Module
Fusebox
Base Colour
Black
White
Red
Yellow
Blue
Blue
Brown
Black
Relay/Module
Pink
Pink
Blue
Cover.
Green Maxi Fuse
Cream
Relay/Module
Grey
Black
Black
Silver
Blue
Blue
Cover.
Orange Maxi Fuse
Black
Relay/Module
Pink
Blue
Blue
Black
Black
Blue
Blue
Red
Black
Cover.
Location
1
2
3
4
5
Location
1
2
3
4
5
6
7
8
9
Location
1
2
3
4
5
6
7
8
9
6-64 September 1996

NO COLOUR 200 RP 201 RG 197 BK 202 8 190 RK
PIN 1 2 3 A
I
AREA 4.Be •1.C5 4.BI
4.B4-30
Bl

HO COLOUR
PIN
AREA 205 GU
I
4B3-29
204 CP 2 4.C5
205
WU
3 4.C5
PERFORMANCE MODE SWITCH BAROMETRIC PRESSURE SENSOR
lyyyygyl
V3
NO COLOUI 182 S
184 0 185 m 186 B 187 BU 188 G 189 SP 190 RK 191 GB 192 V» 193 KB 194 YG 195 GP 196 KU 197 BK 198 RN 199 K
PIN 1 ? 3 4 5 6 7 e 9 10 n 1? 13 14 15 16 17 IB 19 20
AREA 4.B5
4.B5 4.B5
4.B4-30
4.B5 4.D2 4.B5 4.A2 4.B5 4.B6 4.B5 4.B5 4.B6
4
B5 4.A2 4.B5 4.B5
[|
r
1 20 T •T]
D D D D D D( D ^
a D' D D D D| D ^ D D' D D D D
^
^m.
ENGINE HARNESS

V

V
SHEET 7 AREA Al
GEARBOX LINK HARNESS
NO COLOUf 206
OW
207
OR
IBB G 208
OP
209
OB
210 OS 211 OK 212 ON 213 OU 214 OY 215 GU 216 R 217 U 216 G 219 N
PIN 1 2 3 4 5 6 / B 9 10 II 1? 13 14 15 16 17 18 19 20
AREA 4.B5 4.B5 4.BI 4.B5 4.B5 4.B5 4.B5 4.B6 4.B6 4.86
4.83-29
4.86 4.B5 4.85 4.86
NO COLOUR
207
OR
182 S 191 GS 206
OW
208
OP
196 KU 184 0
PIN 38 39 40 41 4? 43 44 45 46
AREA
4.02 4.81 4.81 4.D2 4.D2 4.61 4.81
NO COLOUR
210 OS 218 G 217 U 209 08 193 KB 222 8 185 NR
PIN 47 48 49 50 51 52 53 54 55
AREA
4.02 4.02 4.02 4.02 4.81
4.84-30
4.BI
f OOOC yoooc K>OOQ'
GEARBOX E.C.U

NO COLOUR
I9B
RN
211
OK
213
OU
201
RG
220 B 194
YG
PIN
? 3 4 5 6
7 8 9 10
AREA
4.81 4.02 4.02 4.A2 4.B4-30 4.81
NO COLOUF 187
BU
169
SP

221
GU
204 GP 199
K
205 WU

PIN II
12 13
14 li 16
17 IB 19
AREA 4.81 4.81
4.B3-29 4.A4 4.BI 4.A4
NO COLOUR

212 ON
200 RP
195
CP
214
OY

192
W

216
R
219
N

PIN 20 ?l
??
23 ?4
?5
26 27 28 79 30 31 32 33 34 35
36 37

AREA
4.02 4.A2
4.81 4.02
4.81
4.02 4.D2

°27 Wiring Diagram
Model - Aston Martin DB7
Harness Title - Auto Transmission
Drawing Part No. - B3
7-84629

Revision - 0 Sheet 4 of 26 - 97 MY

NO COLOUR 285 BLG 28$ BR 287 WLC
288
0
289
8
PIN Al A?
Bl R?
CI C2

AREA 6.A4 e.AI
e.A't

6.A4 6.A4

SHEET 5 AREA 86
NO COLOUI 290
KB
291 KB 292
KB
293
KB
294
R
295
R
296
R
297 NS 298 NS 299 NS 300 YB 237 UIN 273 UIN 301 YB 301 YB 302
UIN
283 UIN 303 UIN 304
YB
305 YB
PIN 1 ? 3 4 5 fi 7 8 9 10 II 1? 13 14 15 16 17 18 19 20
AREA 6.C2 6.A6 6.86 5.85-35 6.B2 5.B5-34 6.B6 6.B2
6.03-42
6.C4-56 6.B6 5.CI 6.D4 6.A2 6.A2 6.C5 6.B4 6.C5 6.B2 5.84-36
NO COLOUI 306 8 186 BY 308 8 309 8 310 8 311 B 312 8 313 8 314 8 315 8 316 8 317 8 317 B 318 e 319 B 320 8 321 8 322 8 323 8 324 8
PIN 1 2 3 4 5 6 7 8 9 10 II 1? 13 14 15 16 17 IB 19 20
AREA 6.A4-52 6.C3
6.B4-53
6.86 6.86
e.ce
6.82-45
6.83-47
6.B4-48
6.84-50
6.C3 6.A3 6.A3 6.83 6.C5 6.B5 6.B5
6.84-51
6.B2-46 6.B4-49

NO COLOUR 289 B 287 WLG 285 BLG 286 BR 288
0
PIN 1 ? 3 4
5 6
AREA 6.AI 6.AI 6.AI 6.AI 6.AI

mmm
IZIIXIC6]

HEADER
I
BLACK SOCKET
UMl)^
GMiMl] EMIMiMn.
M

HEADER
2
GREY SOCKET

QoWiMlMiMIMIMiWl] HMD
SPL 48 SPL 49 SPL 50
u.

ENGINE ACCESSORIES
I
\,u SHEET 12 AREA A2

NO COLOUF 297 NS 294
R
304 YB 238
OK
325
WS
264 OS 268 NB 326 UIN 327 RIN 328
UG
13
WU
330 LGO 155
W
54
0
333 P 334 KB 155
KB
290
KB
335
OR
336 0 337 RN 338 OY 339 WR 340 OG

PIN 1 ? 3 4 5 6 7 8 9 10 II 1? IJ 14 15 16 17 18 19 ?n 21 ?? ?3 24

AREA 6.A2 e.A2 6.A2 5. CI 6.C5 5.C5 5.A6 e.B5 6.A6 6.A5
5.D3-32
6.A6 6.A5 6.A6 6.A6
5.02-31
6.D2 6.A2 6.86 6.B5 6.B5 6.A6
5.A4-40
6.A6
14
1 n M

D
D

a
D
,D
D

'D
D
D
D
D
D
D
D

,a
D

'D
D
D
D
D
D
j=
^
J
ml m
ly
\
24
13
NO
2206
318

COLOUR
8 8

AREA
6R4-6.A3 53
ARTHI
'PINT r
NO COLOUf 341 B 186 BY 187 BU 189 SP 344 RIN 345 UK 346 UIN 194 YG 198 U 348 YU 927
LGO
809 YN 316 B
PIN 1 2 3 4 5 6 7 8 9 10 II 1? 13

AREA
6.C4-55
6.A3 6.A6 6.85 6.A5 6.A6 6.A5 6.85 6.02 6.A5 6.A5 6.A5 6.A3

zk

1^

SHEET 12 AREA B3

SPL
51 SPL 52
L^

104
WAY
ECU PLUG

.^¥,

ENGINE ACCESSORIES
2
R
a:
NO COLOUR
328
UG

135 W
927
LGO
348
YU

346 UIN 344 RIN
265 RIN 266 UIN
320 8 321 8 270
R

170 UN
809 YN
326 UIN 194 VG 350 RIN 228 B 249
RG
239
OU
255 GU 337 RH 277 GN 336 0
189 SP 171 UR 231 WU 325 WS
319 8 271 e
PIK
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
AREA
6.C2
6.C2
6.C3 6.C3
6.C3 6.C3
5.A1 5.A1
6.A3 6.A3 5.A5
6.02
6.C3
6.B2 6.C3 6.C5 5.02 5.A3 5.BI 5.C3 6.C2 6.02 6.C2
6.C3 6.02 5.02 6.82
6. A3 5.A5
REAR LAMBDA

SHEET
12
AREA
A3
NO COLOUH 349 NS 302 UIN 350 RIN 351 YN 352
B
353 NS 303 UIN 354 RIN 355
YO
356 B
PIN 1 ? 3 4 5 6 / 8 9 10
AREA 6.C4-56 6.A2 6.85 6.B6 6.C4-57 6.C4-56 6.A2 6.A6 6.86 6.C5-58

SHEET
14
AREA
D3
NO COLOUR
187 BU 333 P 540 OG
327 RIN
276 RIN 354 RIN 330 LOO
345 UK 261 OG
338 OY
278
K
54 G 291 KB
252
GN
246
GP
242
GB
309 B 310 8 272 U
335 OR
256
OG

236 RIN 279 UB 284 RIN 229 YR 257 U 296
R
300 YB
274 RY 282 HG 351 YN 355
YO
292
KB

254
GY
248
GO
244
GW

311 8
PIN 53 54 55 56 57 56 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 a?
83 84
85 86 87 88 89 90
91 92
93 94 95 96
97 98
99 100
101 102 103 104
AREA
6.C3 e.C2 6.C2
6.82
6.04 6.C5 6.C2
6.C3 5.C4
5.04
6.02 6.02 6.A2
5,A4 5.A2 5.AI 6.A3 e.A3 5.A5
6.C2
5.C3
5.CI 6.02 6.04 5.02 5.C3 e.A2 6.A2
6.04 6.04
6C5
6.C5 6.A2
5.B5 5.A3 5.B2
6.A3
NO COLOUR 170
UN
155
KB
171
UR
172
BC
PIN 1 2 3
4 5 6
AREA 6.85 6.C2 6.85 5.01

SHEET 5 AREA D6
RIGHT rOWARO
NO COLOUR
PIN
277
GN
1
278
K
2
279 UB
3
198
U 4

AREA 6.B5 6.A6 6.66 6.C3
AIR CONDITIONER
FRONT LAMBDA
II
NO COLOUR
PIN
226 NS
I
274
RY 2
275 UIN
3
276 RIN
4

REAR LAMBDA
21

AREA
6.03-42 6.86
6.A2
6.A6
3
NO COLOUR PIN 261 NS 1 282
RG
2 283 UIN 3 284 RIN 4
AREA
6.03-42
6.86 6.A2 6.86
Wiring Diagram
Model - Aston Martin DB7
Harness Title - Engine 2
Part No. - B37-84631
Revision - 0 Sheet 6 of 26 - 97 MY

in
NO COLOUF 711 UW
842 KB
836 8G
924 UIN
923 RIN
710 B 769 KB 709 W
925 N
712 OB 709 B
920 W
PIN 1 ? 3 4 5 6 1 8 9 1(1 II 1? 13 14 15 16 17 IS 19 20

ARE*
9.02
11X3
II.C3
I2.A3
I2.A3
9.02 10.01 9.02
II.B4-I23
9.02 I2.CI-I3I
I2.C2-I36
NO COLOUI 297 NS 294 R 304 YB 238 OK 325 WS 264 OS 268 NB 326 UIN 327 RIN 328 UG 13 RO 330 LGO 135 OY 54 C 333 P 334 KB 155 KB 290 KB 335 OB 336 0 337 RN 338 OY 339 m 340 OG
PIN 1 2 3 4 5 6 / 8 9 10 II 12 13 14 15 16 {I 18 19 20 21 22 23 24
AREA II.A3 10.04 10.04 9.A4 9.A4 9.A4 9.A4 I0.C5 I0.C5 9.A6 B.BI 10.04 B.BI B.BI ILB4-I22 I2.C2-I3; ii.a-lil 12.C2-I3; 10.04 10.04 10.04 10.01 II.Al lo.n
• SHEET 6 • AREA B/C2

D
• 0 0
a
D
DOd-,
0 D
1—
D D
n:
a a *— D • • D
o[nr 0 0 • G
a
•
•••npaa
ENGINE HARNESS
SHEET 6 AREA C4
NO COLOUf 341 BRD 926 BRD 186 BY 187 BU 189 SP 344 RIN 923 RIN 345 8G 346 UIN 924 UIN 194 YG 198 RN 348 YU 927 LGO 809 YH 316 B
PIN 1 I •/ 3 4 5 5 6 7 7 8 9 10 II 1? 13
AREA 12.82-132 10.83-112 II.BI II.BI II.BI 10.A4 I2.AI I0.B5-I06 I0.A4 I2.BI II.CI II.CI I0.A4 I0.B2-97 10.04 I0.A4
RED FOWARD 12 I
^
SHEET 3 AREA B6
NO COLOUf ISO
181
138 178 149
163
145
147
GW
NS
YR BK WR
GN
LGB
BS
PIN 1 2 3 4 5 6 1 8 9 10 II 12 13 14 15 16 17 18 19 20
AREA 10.82-91
11.Al
8.BI I2.C2-I4C I2.B2
CI.CI
11.86

M.B2-II6

NO COLOUf 932 B 933 BR 934 BS 935 W 936 NR
937 P 623 BC 938 BS 939 BY 715 PO 940 BP 854 WB 808 K 839 W>
941 BU 743 GO 942 BW 838 PS
PIN 1 ? 3 4 5 6 7 8 9 10 H 1? 13 14 15 16 17 18 19 20
AREA 12.03-143 I0.B2-96 I2C3-I46 I2.C2-I36
8.B5-70

I2.C2-I39 8.C4 II.B2-II6
9.A5-88
9.03
8.C2-60
11.03 10.04 1I.C3
II.B5-I27 9.Ae IO.B2-94 II.C3
AiR8&G SENSOR
MULTIFUNCTION MODULE

ir='fn)—II,

NO COLOUR PIN 866 ON I 873
KU
2 3 863 OP 4 II.C6
AREA II.C6 II.C6
DOOR HAflNESS SHEET 22 ;^ 1>. AREA B6 "^ *^ NO COLOUf 981 99? 983 984
986 987 988 989 818 819 381 38? 383
990 991 99? 99.1 994
OG OU OW OR
6 BW PG PW RG GR YG YU Y
LG NU BS RN B
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 If 18 19 20 21 22
AREA I2.C4-I4S 12.C3-I4S l2.C4-l4t 12.C3-I47
I2.C2-I37 I2.C3-I4I
8.82-61
8.83-65
I2.C2-I34 11.01 8.01 8.01 8.DI

8.B5-69
I2.C2-135 I2.C3-I46 IO.B5-I07 I2.C3-I42
NO COLOUt 891 NK
995 RW 996 PN
909 NG 997 BS 998 WK 904 OW 750 OS 749 OU 999 BK
PIN 1 2 3 4 5 6 7 8 9 10 11 1? 13 14 15 16
AREA
11.
Al
II.B2-1I4 11.82-113
ILA3 I2.C3-I46 II.B3-II7 II.AI 9.A6 9.A6 I2.C2-I40
LOAD RELAY NO COLOUR 94 7 B 948 W 949 W
950
N

PIN 85 86 87 87A 30
AREA I2.C2-I4;
e.B6-74
I2.C1-I29
II.A5-I25
AUX LOAD RELAY NO COLOUB 951 B 952
WK
953
WK

954
N

PIN 8.5 86 87 87A 30
AREA I2.C3-I42 II.B5-I17 11.85-128
II.B4-123
NO COLOUB 955 8 956
WR
957
KB
958
KB
899 NP
PIN 85 86 87 87A 30
AREA
B.B4-67
12.C2-I38 12.C2-I33 10.84-104 II.AI
HO COLOUR 959
BK
960 W 889 N 961 NY
PIN 85 86 8/ 30
AREA 10.85-10! I2.CI-I29 II.A6 I2.C3-I44
NO COLOUE 972 OG 973 OW 974 P 975 BK 976 W 977 OR 978 OU
PIN 1 2 3 4 5 6 7 8 9 10 II 12 13 14
AREA I2.C4-I49 l2.C4-l4t I2.C2-I39 I2.C2-I40 I2.C2-I36 I2.C3-I47 12.C3-145
Wiring Diagram
Model - Aston Martin DB7
Harness Title - Bulkhead LHD
Part No. - B3
7-8463
7
Revision - 0 Sheet 12 of 26-97 MY

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 [D:B3-2?
Airbag DM Fault Code 22
Safing sensor output circuit shorted to battery
voltage.
Normal Operation
The diagnostic module measures the voltage at pin
2-5 (airbag module feed) and 2-5 (safing sensor
output monitor) at thediagnosticmoduleconnector.
The voltage at these pins is dependant on charging
system voltage as shown in the table below. If the
voltage at either pin exceeds 5 volts,
a
fault code 22
will be generated.
in 2-5
2.3V
2.4V
2.5V
2.7V
2.8V
3.0V
3.1V
3.2V
3.4 V
3.5V
3.7V
3.8V
4.0V
4.1V
4.3V
Pin 2-6
2.3V
2.4V
2.5V
2.7V
2.8V
3.0V
3.1V
3.2 V
3.4 V
3.5V
3.7V
3.8V
4.0V
4.1V
4.3V
Charge Volts
9.0V
9.5V
10.0V
10.5V
11.0V
11.5V
12.0V
12.5V
13.0V
13.5V
14.0V
14.5V
15.0V
15.5V
16.0V
Possible Causes
• A short between pins 2-5 or 2-6 and another

wire.
(The wiring to the safing sensor carries
voltages above 5 volts).
• A short between the cable reel cassette circuit
and other 12 volt circu its at the steering column

head.

• A short across the normal ly open contacts of the
safmg sensor.
• Vehiclechargingsystem voltage too
high.
If the
generator output is greater than 17V, fault code
22 may be logged.
Fault Analysis
WARNING: Read and adhere to all warnings and
safety procedures at the start of this section when
working on the airbag system.
Disarm the airbag system and fit airbag simulators
(6.4.21.4).
Check the voltage at the battery with the engine
running at approximately 1500 rpm.
If the voltage is 14.8 ±0.5 volts, the charging
voltage is within specification, go to step 3.
If the voltage is significantly above 14.8 volts (the
voltage regulator set point) service the charging

system.
Clear the code 22. Rearm the airbags
(6.4.21.4)
Check in the area of the diagnostic module
connector for harness damage which could cause
a short circu it to 12 volts. (Note: The airbag system
harness runs are sheathed in black plastic protection
and harness damage is unlikely.)
If no harness damage is evident, go to step 4.
If harness damage is identified, service the wiring as
necessary. Clear the code 22. Rearm the airbags
(6.4.21.4).
Switch on the ignition. Monitor the voltage at pins
2-5 and 2-6 whilst rotatingthe steering from lock to
lock in both directions.
If the voltage at both pins remains below 5.0 volts,
go to step 5.
If the voltage rises to above 5.0 volts, service the
cable reel cassette or wiring as necessary. Clear the
code 22. Rearm the airbags (6.4.21.4).
With the ignition on, check the voltage at pins 2-5
and 2-6 whilst manipulating the bulkhead and
safing sensor harnesses.
If the voltage rises above 5.0 volts, service the
wiring fault in the harness area being manipulated
at the time the voltage rise occurred.
If no voltage rise occurs, fit a new safing sensor as
the most likely cause of the code 22. Clear the code
22 and rearm the airbags (6.4.21.4).
6-88 September 1996

Electrics
Airbag System =2?
Airbag DM Fault Code 24
Safing sensor output - battery feed/return open
circuit.
Normal Operation
The diagnostic module measures the voltage on
diagnostic module pins 2-5 and 2-6 the voltage
varies with the vehicle charge level
as
shown in the
table below:
in 2-5
2.3V
2.4 V
2.5V
2.7V
2.8V
3.0V
3.1V
3.2V
3.4V
3.5V
3.7V
3.8V
4.0V
4.1V
4.3V
Pin 2-6
2.3V
2.4V
2.5V
2.7V
2.8V
3.0V
3.1V
3.2V
3.4V
3.5V
3.7V
3.8V
4.0V
4.1V
4.3V
Cliarge Volts
9.0V
9.5V
10.0V
10.5V
11.0V
11.5V
12.0V
12.5V
13.0V
13.5V
14.0V
14.5V
15.0V
15.5V
16.0V
The diagnostic module also measures the voltage at
pin 1-7 (battery input). Using the battery input
voltage, the system can predict the expected voltage
level on pins 2-5 and 2-6. If the voltage on pins 2-
5 or 2-6 is higher or lower than expected, a fault
code 24 will be declared.
Possible Causes
• Open circuit or high resistance in the wiring
harness or safing sensor.
• Intermittent battery voltage on pin 1-7
• The resistance of the pin 2-5 to 2-6 circuit to

ground.
This circuit should be open to ground at
all times.
Fault Analysis
WARNING: Read and adhere to all warnings and
safety procedures at the start of
this
section when
working on the airbag system.

1.
Disarm the airbag system and fit airbag simulators
(6.4.21.4).

2.
Probe the battery input voltage terminal
1
-7. Start
the engine and monitor the charge voltage level
using a digital multimeter. Run the engine at idle
speed and look for any instability in the voltage

level.
Run the engine at a constant medium speed
and then at a constant high speed and repeat the
observation for voltage instability.
If the voltage levels are stable, go to step 3.
If instability of the voltage level is observed,
Investigate and rectify the problem in the charging
circuit.
3. Switch off the ignition. Disconnect the diagnostic
module and check for OQ continuity from pins 2-5
to 2-6.
If no resistance is detected, go to step 4.
If any resistance is detected between pins 2-5 and

2-6,
service the wiring or safing sensor to achieve
Ofi continuity.

4.
Measure the resistance to ground from pins 2-5 and

2-6.

If no short circuit is detected, replace the diagnostic
monitor. Rearm the airbags (6.4.21.4).
If
a
short to grou
nd
is detected, service the wiring or
safing sensor as necessary. Rearm the airbags
(6.4.21.4).
6-90 September 1996

Em^^^?
Air Conditioning
General Description
General Description
Specifications
Refrigerant
Designation
Refrigerant R134A

(HFCUAA)

Compressor
Type
&
model
SD-7H15
Charge weight
1050g±50g
Configuration
7 cylinder
Compressor Lubricants
Designation
Polyalkylene glycol
(PAG)

Standard
for
Recovery, Recharge
and
Recycle Equipment,
System Capacity
120-150
ml

Manufacturer and Type
ICI Klea
or
equivalent

Manufacturer

Sanden
155 cm^
per
revolution
Manufacturer and Type
Sanden SP
20

Feature

Recovery rate
Cleaning capability
Oil separator
Vacuum pump
Filter

Charge

Hoses
Charge pressure
Compressor Belt Tension
Type
Vee belt
Burroughs method
Clavis method
Requirement

0.014-0.062
mVmin.
(1.36 kg in 20
minutes)
15
ppm
moisture; 4000
ppm oil; 330 ppm
non-condensable gases
in air

With hermetic compressor and automatic
oil
return
2 stage
0.07
-0.127 mVmin.
Replaceable with moisture indicator
Selectable charge weight and automatic delivery
Dedicated Refrigerant R134A port connections.
Heating element
to
increase pressure
Condition and range
All figures apply
to a
cold belt.
New belt
578 to 623 N

If tension
is
below
356 N,
reset
at 512 to 534 N

New belt
147 to 153 Hz

If tension
is
below
110 Hz,
reset
at 132 to 138 Hz

Note:
The
tension
is
measured
midway between the
compressor
and crankshaft pulleys. For a new
belt,
rotate engine three
revolutions minimum and then re-check the tension.

May 1996
8-5