ECU ASTON MARTIN DB7 1997 User Guide

Electrics
Electric Windows - Fault Analysis / Window Motor Removal
[n:m3^^

Electric Windows
Description
Power to the window wind circuits is available
when the ignition switch is on and is supplied
through a thermal cut-out to the left and right
window switches. The switches are double pole
plus earth so that the current through a window
motor may be switched in either direction to raise
or lower the window.
DB7 uses frameless door windows which seal
against rubber strips around the body shell door

opening.
To avoid damaging these seals during
door opening, the door glass must be lowered
before the door can be opened. This function is
controlled by the window control units. The units
are mounted on the inside of each door frame and
will sense if a door handle is pulled to open the
door. Before releasing the door lock, the control
unit will drive the window wind motor briefly to
lower the door window glass down until it clears
the window seals. Similarly, after closing a door,
the window motor will be run to raise the door glass
to seat the glass against the body seals.
Fault Analysis Procedure
a) If a window fails to operate, check for fuse failure
and the connectors for poor or open contacts.
b) Check the thermal cut-out by shorting across it and
operating either window. If the windows operate
with the short
ci rcu
it but not without, the cut-out is
faulty.
c) With the ignition on, battery voltage should be
available between the inputterminalsof the switches
and chassis. Operate each switch and ensure that
battery voltage is available between the switch
output terminals and chassis.
d) Measure voltagefrom each switch inputterminalto
the switch earth return terminal. If no voltage is

measured,
the earth return line is open circuit.
e) Measure continuity through the wiring from the
switches to each motor. If continuity is correct,
remove the motor for bench testing.
6.7.04 Door Window Motor
Procedure

1.
Remove the door trim panel and the glass inner
sealing
trim.

Figure!. Window Securing Screws
2. Position the window to gain access to the slider
bracket and glass securing screws.
3. Disconnect the battery earth
lead.

4.
Remove two screws securing the glass to each of
the two slider brackets. Loosen the two screws
securing the glass to the elevator
rail.

6. Slide the elevator rail forwards until the glass
securing screws are opposite the wide opening of
the rail keyhole slots and remove the glass from the
top of the door.
7. Disconnect the window motor multiplug.
6-14 May 1996

in:s^^^
Electrics
Electric Door Mirrors
Remove four bolts from the motor bracket and one
from the forward end of the lower elevator
rail.

Figure 2. Motor and Elevator Securing Screws
9. Lift out the elevator assembly through the door top.
6.7.05 Door Mirror Assembly
Procedure

1.

2.

Removethe door interiortrim panel and disconnect
the door mirror switch.
Disconnect the door mirror harness
plug,
noting
the correct connection. Release the door mirror
loom from its clips.
Note:
Two
plugs are fitted in the door loom, one for left
and one for right hand
doors.
Ensure
that
the
correct plug
is connected on
reassembly.

Figure 7. Door Mirror Assembly
3. On the outside of the door, lift the sealing ring on
the mirror mount and release one grub screw
securing the mirror.

4.
Remove the mirror from the door.
5. Remove the door mirror adaptor ring from the door
to permit the mirror wiring socket to pass through
the mounting hole and then remove the mirror.
May 1996 6-15

Electrics
Transmission Control Module "3^^
6.7.06 Transmission Control Module
Renew (TCM)
Data
Torque Figures
Nut TCM to mounting bracket 2-3 Nm
Procedure
Disconnect the battery.
1.

2.

3.
Remove the rear seat squab. Remove the rear
quarter trim and the rear quarter lower trim pad.
Remove the TCM to mounting bracket securing
nuts (Fig.
1
-2) and remove one bracket.
Figure 1

4.
Remove the TCM and mounting bracket assembly
from the body mounting bracket (Fig. 1-1).
5. Disconnect the TCM multi plug (Fig. 1-4) and
remove the TCM.
6. Fit and align the left mounting bracket (Fig.
1
-5) to
the new TCM, and secure with two nuts. Connect
the harness multi plug (Fig. 1-4) to the TCM. Fit the
TCM and left mounting bracket assembly to the
body mounting bracket (Fig. 1-1), ensure the left
bracket slot is fully seated.
7. Fit the right mounting bracket (Fig.
1
-3) to the TCM
and to the body mounting bracket. Secure with two

nuts.

8. Refit the rear quarter lower trim pad.
9. Refit the rear quarter trim panel.

10.
Refit the rear seat squab.

11.
Reconnect the battery.
6-16 May 1996

[EM^^^

Electrics
Barometric Pressure Sensor

6.7.07
Barometric Pressure Sensor -
Renew
Data
Torque Figures
Sensor mounting nut 2-3 Nm
Procedure

1.
Disconnect the battery.

2.
Remove the left rear quarter trim panel to access the
TCM and barometric pressure sensor.
Figure 1
3. Disconnect the harness multi plug (Fig. 1-3) from
the barometric pressure sensor (Fig.
1
-4 ).

4.
Release the two securing clips (Fig. 1-5) and
remove the sensor).
5. Fitthe new sensor into position, and secure with the
two clips.
6. Connect the multi
plug.

7. Refit the interior
trim.

8. Reconnect the battery.
May 1996 6-17

Electrics
Electrical Component Location Index - Up to 97 MY
Component Name
ABS ECU
Air Con Compressor Clutch
Air Con Fan Motor - LH
Air Con Fan Motor - RH
Air Conditioning Trinary Switch
Air Conditioning Unit
Air Pump
Air Temperature Sensor
Alarm Override Switch
Alarm Siren
Alternator
Ambient Temperature Sensor
Barometric Pressure Sensor
Boot Lamp
Boot Lamp
Boot Lock Actuator
Boot Release Switch
Brake Accumulator Pump
Bulb Fail Unit - Front Side Lights
Camshaft Sensor
Central Locking Unit
Cigar Lighter
Column Switchgear
Crankshaft Position Sensor
Cruise Control Brake Switch
Cruise Control Clutch Switch (LHD)
Cruise Control ECU
Cruise Control On/Off Switch
Cruise Control Pump
Cruise Control Set Switch
Cruise Control Inhibit Switch
Diagnostic Socket - Transmission
Dimmer Module
Door Lock Actuator
Door Mirror- LHD
Door Mirror- RHD
Door Mirror Switch LH
Door Mirror Switch RH
Door Speaker -LH
Door Speaker - RH
EDIS Coil Pack
EDIS Amplifier Module
Engine Diagnostic Socket
Engine ECU
Exhaust Temperature/Speed Warning
Fan Fuses
Fan Motor 1
Fan Motor 2
Fan Run-on Switch
Flasher Module
Fog Lamp - RH Front
Fog Lamp - LH Front
Location
Reference
15-1
3-20
8-2
8-6
10-6
8-3
8-4
3-13
1-8
11-7
3-2
1-12
11-1
5-2
5-2
13-8
2-10
7-4/8
4-6
3-10
9-4
8-1
13-3
3-3
11-8
12-9
6-3
12-7
1-2
12-8
10-8
10-7
4-16
12-12
2-4
2-8
2-3
2-9
6-4
6-9
3-1
1-10
10-5
7-3
4-3
1-21
7-6
7-7
7-5
4-13
14-10
14-9
Wiring Diag.
Reference
28-A1
5-D2
8-A5
13-C4
5-D3
11-82
1-C2
5-C3
1-C5
1-B3
5-D3
1-A2
4-A4
24-A5
24-C4
27-A5

l-i-C3

28-84
9-C2
6-C3
8-D1
19-D3
12-C5
5-D2
12-85
2-D4
20-A2
20-C3
2-A3
20-D3
21-D3
12-A4
13-A4
17/18-B1
17-A3
17-A5
17-D5
18-D5
17-C5
18-C5
5-D5
6-B2
6-D4
6-C5
11-C5
3-A3
3-A2
3-B2
5-A2
13-C2
1-A1
1-C1

Rep.
Op. Notes
Reference

5.1.11.1

8.1.07.3

8.2.09.1
8.2.08.1
8.1.11.1
8.2.01.1

2.3.01.2
2.2.06.1
6.1.06.1
6.2.03.1
6.3.01.1

8.2.07.1

3.3.08.2

6.9.04.1
6.9.04.1
6.9.06.1
6.5.09.1

5.1.08.1

6.4.01.1
2.5.06.1
6.7.03.1
6.5.10.1
6.5.02.1
2.5.06.3
6.4.02.1
6.1.08.1 Manual only
6.6.09.1
6.5.07.1
6.1.09.2
6.5.07.2

3.3.08.6

6.4.03.1
6.4.04.1
6.7.10.1
6.7.08.1
6.8.01.1
6.7.08.2
6.8.01.2
6.7.09.1
6.8.02.1
6.2.05.1
6.2.05.3
6.4.05.1
6.4.06.1
6.4.07.1 Multi-functio
6.2.06.1

1.7.17.1

1.7.17.2

1.7.16.4

6.4.08.1
6.1.04.1
6.1.04.2
May 1996 6-19

Electrics
Electrical Component Location Index •
Component Name
Fuel Filler Flap Solenoid
Fuel Pump 1
Fuel Pump 2
Fuel Tank Sender Unit
Gear Selector Illumination
Gear Shift Interlock Solenoid
Gearbox Connector (Auto)
Gearbox ECU
Gearshift Interlock Module
Handbrake Switch
Headlamp Control Module
Head/Side Lamp - LH Front
Head/Side Lamp - RH Front
Heated Front Screen Controller
Heated Front Screen Fuse - 40A
Heated Front Screen
Heated Front Screen
Heated Rear Screen
Heated Washer Jet
Heated Washer Jet
High Level Stop Lamp
Horn - LH
Horn - RH
Idle Speed Control Valve
Ignition Switch
Indicator/Side Lamp - LH Front
Indicator/Side Lamp - RH Front
Inertia Switch
Injector 1
Injector 2
Injector 3
Injector 4
Injector 5
Injector 6
Input Speed Sensor (Auto)
Instrument Panel Illumination Control
Instrument Panel
Interior Light - Rear LH
Interior Light - Rear RH
Key Solenoid
Key-In Warning Switch
Kickdown Switch
Lambda Sensor A
Lambda Sensor B
Logic Earth
Low Coolant Probe
Low Level Sensor
Lumbar Pump
Map Reading Light
Microswitch - Glass Drop LH
Microswitch - Glass Drop RH
Up to 97 MY
Location
Reference
2-1
15-13
15-14
15-12
9-3
13-6
7-11
11-2
13-7
8-8
1-3
14-7
14-12
11-4
11-5
7-10
7-1
9-8
1-11
1-11
9-1
11-6
11-6
3-17
8-7
14-8
14-11
7-2
3-6
3-7
3-8
3-9
3-n
3-12
11-11
2-7
2-6
5-4
5-4
11-10
11-9
8-5
3-18
3-19
9-2
13-5
4-1
9-5
5-1
12-2
12-2
Wiring Diag.
Reference
24-A3
25-A1
25-A2
24-C5
19-D4
21-C4
7-B4
4-B3
21-A2
24-A1
2-A2
1-D2
1-A2
9-A2
9-B2
8-B5
14-B2
24-A2
5-A3
5-B3
24-B2
3-C1
3-81
5-C5
12-D2
1-C1
1-A1
8-D2
5-A2
5-C2
5-A3
5-C2
5-A4
5-C4
7-B2
13-D5
11-C5
24-A2
24-D2
12-B2
12-B2
14-A5
6-B5
6-B5
10-D4
8-C3
3-C1
22-D2
13-C4
17-A2
18-A2
Ini^'

IL-^^'^

Rep.
Op.
Reference

6.9.07.1

2.6.02.1
2.6.02.1
2.6.06.1

6.5.11.1

3.3.01.1

6.6.10.1
6.5.12.1
6.1.10.1
6.1.01.1

6.1.01.2

6.4.09.1

6.4.09.2

6.4.09.3
6.4.09.3

6.6.11.1
6.4.10.1
6.4.10.1
6.6.12.1
6.1.11.1
6.1.11.1

2.2.05.1

6.5.13.1
6.1.03.1
6.1.03.1
6.5.14.1
6.3.04.1
6.3.04.1
6.3.04.1
6.3.04.1
6.3.04.1
6.3.04.1

3.4.02.1

6.5.04.2

6.5.04.1
6.6.02.1
6.6.02.1
6.5.14.1

5.4.01.1

6.3.05.1
6.3.05.1
6.5.15.1

1.7.14.1

6.6.01.1
6.1.13.1
6.1.13.1

W3^y
Notes
Auto only
Auto only
Auto only
Auto only
Auto only
Auto only
Auto only
6-20 May 1996

Electrics
Electrical Component Location Index - Up to 97 MY
Component Name
Seat Belt Switch
Seat ECU - Driver
Seat ECU - Passenger
Seat Heater - Cushion Element
Seat Heater - Squab Element
Seat Heater Control Module
Seat Motor Potentiometer
Seat Pressure Pad
Seat Switch Pack - Driver
Seat Switch Pack - Passenger
Security System Aerial
Security System ECU
Side Marker Lamp - LH Front
Side Marker Lamp - RH Front
Speaker - Rear LH
Speaker - Rear RH
Speed Control Dump Valve
Start Inhibit Switch
Starter Motor Solenoid
Stop Lamp Fail
Stop Lamp/Cruise Disable Switch
Thermal Breaker - Window Lift
Throttle Potentiometer
Water Temp Sensor - Engine ECU
Water Temp Sensor - Temp Gauge
Wheel Speed Sensor - Front RH
Wheel Speed Sensor - Front LH
Wheel Speed Sensor - Rear RH
Wheel Speed Sensor - Rear LH
Window ECU - LH
Window ECU - RH
Window Switch - RH
Window Switch LH
Wiper Logic Module
Wiper Motor
Window Lift Motor
Location
Reference
13-2
6-2
6-2
12-5
12-4
6-3
9-7
12-6
6-8
6-8
2-12
15-2
5-5
5-5
6-10
6-10
1-4
10-9
3-14
15-10
11-8
4-7
3-15
3-5
3-4
13-4
13-4
13-1
13-1
12-11
12-11
2-5
2-5
4-5
1-1
12-10
Wiring Diag.
Reference
22-A3
16-A1
15-A1
22-A2
15/16-A4
22-A5
22-C2
22-D3
16-B1
15-B1
24-C2
26-B6
1-C2
1-A3
24-B2
24-C2
2-A2
21-C3
3-C2
25-A3
12-C5
9-C3
5-A3
5-C2
5-C2
29-C3
28-D4
28-D3
28-D2
17-D3
18-D3
19-A2
19-D2
9-A3
8-C3

Rep.
Op.
Reference

6.6.16.1
6.6.17.1

6.6.17.2

6.6.18.1

6.6.18.2

6.6.18.3

6.6.19.1
6.6.20.1
6.6.21.1
6.6.21.1
6.6.22.1

6.6.22.3

6.1.18.1
6.1.18.1
6.6.23.1
6.6.23.1
6.1.19.1
6.1.20.1

6.3.02.2

6.9.15.1
6.4.02.1
6.1.21.1

2.5.02.2

6.3.07.1

8.2.12.1

5.1.12.1
5.1.12.1
5.2.01.1
5.2.01.1

6.1.22.1
6.1.22.1
6.5.03.1
6.5.03.1
6.2.01.1

6.1.21.3

Notes
6-22 May 1996

#
ABS ECU Gearbox ECU Window ECU Central Locking ECU Engine Management ECU
Lamp Fail ECU
EDIS Amp
Security ECU Window ECU Seat ECU'S Air Conditioning ECU
Figure 17
o
o 3 •a o 3 n 3 O n Si 5 3

ere

3
c
•o
o
-<
n

NO COLOUR PIN 725 B
364 NG
370
BK

727 B 361 NK
1 2 3 4 5 6 7 8 9 10 II
AREA A3
86
C6
A3 86
SEAT HEATER
SWITCH PACK
NO COLOUB 728
R
369 OU 729 0 730
OR
726
B
363 P 731 KR 732
K
733
S

734
SN

362 RW
PIN AREA 1 B4-I3; 2 C6 3 Dl 4 01 5 A3 6 86 7 01 8 Dl 9 01 10 II 12 Dl 13 14 B6
NO COLOUR 723
B
725 B 726
B
727 8
AREA A4 Al Bl Al

NO MLdUl)
|IIM' 723
B
1 724
R
2 3 4
-mr A3 B4-I5!
SEAT ECU
NO COLOUF 366 WK 734 SH 733
S
730
OR
732
K
731 KR 365 BP 729 0
Pin 1 4 6 » 12 13 ?« ,?/„
AREA 66 CI Bl Bl Bl 81 66 SI

N6
coLoutl
361 NK
362 RW 363 P
364 NG 365 BP 366 WK 367 OW 368 OS 369 OU 370
BK

M 1 2 3 4 5 6 7 8 9 10 II 12 13 14 15 1$

tttlU
Al
CI 81
Al Dl 01 C3-I4C 03 81 Al
Eka
NO COLOUR 368 OS 721 OW 722
R

720
OW

PIN 89 86 67 87A JQ
AREA C6 C4-I4t B4-I39
C4-I4C
HEATER RELAY
/n:^-^? Wiring Diagram
Model - Aston Martin DB7 Coupe
Harness Title - Passengers Sill
PartNo.-B37-81310
Revision - 0 Sheet 15 of 29 - Up to 97 MY

N6
tOLOufi hu 740 B I 2 672
NG
3 4 706
BK
5 6 742
B
7 656
NK
8 9 10 II
!2_

AREA A3
A3 B6
SEAT HEATER

Esa

SWITCH PACK
HO COLOUR 743 R 596 OU 744 0 745 OR 741 B 676
P
746 KR 747 K 748
S

749
SH

70} RW
PIN 1 2 3 4 5 6 1 n 9 10 II
1? „I1
AREA B4-I4I C6 a a A3 B6 Dl 01 01
01

B5.

NO COLOUR 739 8 740 B 741 B 742
B

AREA A4 Al Bl Al
NO COLOUR PIN 738
B
1 739
R
2 3 4
mi' A3 B4-I4I
SEAT ECU
NO COLOUK 705
WK
749
SN
748 S 745
OR
747 K 746 KR 704 8P 744 0
PIN 1 4 6 9 1? 13 ?S V
Utik B6 a Bl Bl ei Bl B6 Bl
^P

I
24 48
NO COLOUI 656 NK
703 RW 676 P
672
KC
704 BP 705
WK
669 OW 597 OS 596 OU 706 BK
pm 1 2 3 4 5 6 7 a 9 10 II 1? 13 14 19 1?
AREA Al
CI Bl
Al 01 a 03-142 03 Bl Al
.
SHEET
14
AREA
Dl
» ^
MO COLOUR 597 03 736
OW
737
R

735
OW

PIN es 66 HI B7A }P
AREA C6 C4-I42 B4-I4I
..CfTll?
HEATER RELAY
"T? Wiring Diagram
Model - Aston Martin DB7 Coupe
Harness Title - Drivers Sill
PartNo.-B37-81311
Revision - 0 Sheet 16 of 29 - Up to 97 MY