1997 ASTON MARTIN DB7 fuel pump

STOP LAMP
NO COLOUR 807
CB
1097
G
1098
GP

1099
G

RELAY
PIN AREA 85 I4.CI 86 I7.D2 87 I6.B5-I74
87A
30
17X2

REVERSE LAMP RELAY FUEL PUMP RELAY 1

NO COLOUR 803
SLG
1100
W
IIOI
GN

1102
NP
PIN 85 88
8/
R7A 30
AREA M.CI 17.02 I6.B3-I7I
I6B5-I75
NO COLOUfl 335 OR 1103 KB 1087 UG 337 RN 1104 NP
PIN BS R6 87 R7A 30
AREA I4.CI I7.B3-I79 I6.A5 14.01 17.02
FUEL PUMP RELAY 2
NO COLOUR 336 0 1105 KB 1089 UR 809 YN 1106 NP
PIN AREA 85 I4.CI 86 I7.B3-I79 87 le.AG 87A I4.CI 30 I7.C2
TILT SENSOR RELAY
NO COLOUfl 1109 B 1110 WK
nil BO 1112 B
PIN AREA 85 17.84-183 S6 I7.B4-I82 87 87A I4.B4-I58 30 I7.B4-I83

I^OBROWN
BASE
87A ^JSSPBL

[jylYELLOW
BASE

ma

3«-i

J¥tU

SHEET
16
AREA
B6

10 in

'-fts'^B^-'

lijZ-il
[NATURAL
BASE

L 3JA
NO COLOUR AREA 1107
N
17.83-180 llOe
N
17.83-181
NO COLOUR 1125
N
1126
G
1127
G
1128
N
1130
N
1072
R
1075
R
1133
G
1135
N
1137
G
1138
N
1140
N
PIN 1 2 3 4 5 6
/
8 9 10 II
12 13
AREA 17.83-180 16.86-177 16.86-177 I7.B3-I8I I7.B3-I80 14.84-155 14.84-155 16.86-177 17.83-180 I6.B6-I77 I7.B3-I8I I7.B3-I8I
c

SHEET
25
AREA
B/C6

CZE
BOOT FUSEBOX HARNESS
•^-
rp
NO COLOUR
iioe NP 1099 G 1097 G 1129 NP 1115 NS 1131 RS 1132 RG 1134 m 1136 NS 1100 W 1139 NP 1104 NP
PIN 1 2 3 4 5 6 7 8 9 10 II

\l
AREA I7.A3 I7.AI I7.AI 16.83-168 I7.C4 I6.B5-I76 I6.C3-I70 17.84-182 I7.B5-I84 I7.A2 16.85-175 I7.A2

I

D
a
D
D
D
D,
D
c^
D
D
D
0
D
D

NO COLOUR
PIN
1113
VS A
1114
NS B

AREA 17.86 I7.C6

i'^AAA'

ITYRE
COMPRESSORI
NO COLOUR AREA 1115
NS
I7.DI 1116
8 I7.B4-IB3
5^

\_/
SECURITY NO COLOUR 1055
TIN
1026
KB
1117
BR
1118
BR
1028
HI
772
OR
1027
U

1119
WY
3
YS
1113
YS
1120
GR
1121
8
1122
8RD

1021
UO
773
OU

374
0

1
LG
1082
PG
1123
GW
1114
NS
1124
NS

SYSTEM
PIN 1 ? 3 4 5 6
7 8 9 10
II II 12 13
14 15
16
17 18 19 20 ?l
22 23 24 25 2b

AREA I6.C2 I4.B6 16.84-172 16.86-178 14 .C6 I4.CI 14.06
17.84-182 M.BI I7.B5 I5.B1-163 17.84-183 I6.82-I67A
I4.C4 I4.CI
I5.BI
I4.CI ie.C4 16.81-167 17.85 17.85-184
'^7
Wiring Diagram

Model
- Aston Martin DB7

Harness
Title - Rearward - 4

Part
No. - B37-84642

Revision
- 0
Sheet
17 of 26-97 MY

^^2?
The Aston Martin Lagonda Diagnostic System
Users Guide
Output State Control - 97 MY
This menu item provides a quick test of the basic electro­
mechanical components controlled by the PCM. These
tests should be performed in a key on engine off state.
The selections available are:
• Low Speed Cooling Fans
• High Speed Cooling Fans
• Set Electromechanical Outputs
Low and High Speed Fans
Selecting and confirming either the low or high speed
cooling fans will run the fans at the selected speed for 5
seconds to verify their operation.
Electromechanical Outputs
This selection will cause the following electromechanical
devices to operate for five seconds
Air Pump
Fuel Pumps
Canister Purge Valve
Idle Air Control Valve
Observing each device in turn as the PCM outputs are
turned 'On' will enable the technician to verify correct

operation.

September 1996 9-35

The Aston Martin Lagonda Diagnostic System
Users Guide ffi:S5'=2?
Engine Datalogger
The datalogger software is designed to aid the technician in identifying permanent or intermittent faults in the DB7's
electrical and electronic systems. It can provide a recorded view of selected signals over a chosen time period. This
recording may be captured in a static, rolling road or road test situation. Data recorded during such tests may then be
analysed on completion of the test or printed out for later analysis.
Datalogger operation is described using a fully worked example at the end of this PDU Users Guide.
The full list of datalogger signal names and descriptions is provided in the DB7 OBDII Diagnostic Manual and on the PDU

screen.
The following list is a summary of the PCM signals which may be monitored.
Signal Description
ACCS Air-Con Control Switch - 1 = A/C On
ACP Air-Con Pressure Sensor - 1 = A/C pressure high
ACT MAX Maximum Intake Air Temperature signal during normal running
Adap Fuel 1 Current Adaptive Fuel Correction - (% of range)
Adap Fuel 2 Current Adaptive Fuel Correction - (% of range)
ADPT1F Adaptive Fuel - Table 1 failure mode
ADPT2F Adaptive Fuel - Table 2 failure mode
AIR Air Pump On/Off - 1 = Pump On
AIRM Air Pump Monitor -1 =
high,
pump on
B+ Battery Positive - Volts
BARO Barometric Pressure
CID Cylinder Identification - Cam sensor status
CMP STAT Cam Position Sensor -1 = CID mis, not currently reliable
DRVCNT Number of OBDll Drive Cycles Completed
DSDRPM Desired engine speed (RPM)
DTCCNT Diagnostic Trouiale Codes Count (Fault codes + pending codes. MIL and non-MIL)
ECT MAX Maximum Engine Coolant Temperature signal during normal running
ECT STAT Engine Coolant Temperature - in or out of range
ECT-C Engine Coolant Temperature - "C or raw counts
ECT-V Engine Coolant Temperature - Volts or raw counts
EGR STAT EVP EGR sensor failure
ENGLOAD Engine Load (Ratio of air charge over standard)
ENGRPM Engine Speed - RPM
EPT DPFE Sensor feedback
EVAP DC Cannister Purge Duty Cycle (% on)
EVAPCVA Vapour Management Valve (VMV) fault detected
Evts HI Cumulative cylinder events total carried over from previous background logic executions
Evts LO Cumulative cylinder events total carried over from previous background logic executions
FPM Fuel Pump Monitor - 0 = pump off, 1 = pump on
FPUMP DC Desired Fuel Pump Duty Cycle - 0% or 100%
H02S12 Sensor Output - Volts
H02S21 Sensor Output - Volts
H02S22 Sensor Output - Volts
H02S1I Sensor Output - Volts
HFC High Speed Fan Status
Htrl
1
ret Highest number of retries seen on the H02S 11 heater
Htrl 2 ret Highest number of retries seen on the H02S 12 heater
Htr21 ret Highest number of retries seen on the H02S 21 heater
Htr22 ret Highest number of retries seen on the H02S 22 heater
HTRCM11 H02S n heater current
HTRCM12 H02S 12 heater current
HTRCM21 H02S 21 heater current
HTRCM22 H02S 22 heater current
9-36 September 1996