1997 ASTON MARTIN DB7 Workshop Manual

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Electrics
Repair Procedures

6.1.01

6.1.02

6.1.03

6.1.04

6.1.05

6.2.01
6.3.01

6.3.02

6.5.01

6.5.02

6.5.03

6.5.04

6.5.05

6.5.06

6.5.07

6.5.08

6.6.01

6.6.02

6.6.03

6.6.04

6.6.05

6.6.06

6.6.07

6.6.08

6.7.01

6.7.02

6.7.03

6.7.04

6.7.05

6.7.06

6.7.07

Headlamp Unit
Headlamp Alignment
Front Indicator/Parking Lamp Unit
Front Fog Lamp Assembly
Side Repeater Lamps
Windscreen Wiper Motor
Alternator
Starter Motor
Steering Wheel and Horn Switches
Column Switches
Ignition Switch
Instrument Panel
Radio
Air Conditioning and Switch Panel
Cruise Control, Window and Gearshift Switches
Seat Control Switch Panels
Front Interior Lamps
Rear Interior Lamps
Front Seat Removal
Front Seat Runner Assembly
Front Seat Rail Motor
Lumbar Support Motor
Seat Recline Motor
Seat Control Unit
Door Edge Lamps
Rear Lamp Cluster
Door Central Locking Motors
Door Window Motor
Door Mirror Assembly
Transmission Control Module - Renew (TCM)
Barometric Pressure Sensor - Renew
6-3
6-3
6-4
6-4
6-4
6-5
6-5
6-6
6-6
6-6
6-7
6-7
6-8
6-8
6-9
6-9
6-10
6-10
6-10
6-11
6-11
6-12
6-12
6-12
6-12
6-13
6-13
6-14
6-15
6-16
6-17
April 1997 6-1

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

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Electrics
Headlamp Unit / Headlamp Alignment
6.1.01 Headlamp Unit
Procedure

1.
Remove the front apron undertray and remove the
complete nose assembly.

2.
Release the headlamp plug from the body clip and
disconnect the
plug.

Figure 7. Headlamp Removal
3. Remove
1
bolt from the front headlamp mounting.

4.
Remove the main beam lamp access cover and
loosen the rear headlamp mounting bolt.
5. Lift off the headlamp assembly.
5. On refitting the headlamp assembly, carry out the
headlamp alignment procedure.
6.1.02 Headlamp Alignment
Data
Main Beam Alignment 1.5° down
Dipped Beam Alignment 1.5° down
Tools
Headlamp Alignment Gauge
Procedure

1.
Lift the bonnet and remove the main beam access
cover from the headlamp unit.

2.
Usingthe large hex adjusters, align theouter dipped
beamsto thecorrect pattern in
a
headlampalignment
gauge
Figure 1. Headlamp Alignment
3. Using the small hex adjusters, set the inner main
beam al ignments
so
that the bright spot
is
central ised
and 1.5° down inthealignmentgauge. If necessary,
fine tune the adjustment to suit average vehicle
loading and driver requirements.
Dipped Beam Conversion - UK-Europe-UK

1.
Access the dipped beam lamps through the panels
in the wheel arch liners.

2.
Cut the tie strap securing the rubber gaiter and pull
back the gaiter.
3. Slacken 3 screws securing the lamp backplate
(Figure 2) and rotate the plate to the right for U
K
or
to the left for Europe to the limit of the bolt slots.

1
.For European (RH) Use
(Beam Pattern _/)
2.For UK (LH) Use
(Beam Pattern ^^)
Figure 2. Dipped BeamConversion UK-Europe
4. Tighten the three screws, replace the gaiter and
secure it with a new tie strap.
May 1996 6-3

Electrics
Front Exterior Lamps - Removal Procedures E::M^=2?
6.1.03 Front Indicator/Parking
Lamp
Unit 6.1.05 Side Repeater Lamps
Procedure

1.
Release the single captive screw at the outboard
end of the assembly and remove the assembly from
the front apron.
Procedure

1.
Protect the surrounding paintwork and use a
screwdriver to lever the assembly from the front

wing.

Figure 7. Indicator/Parking Lamp Removal
2. Disconnect the 2 electrical plugs at the rear of the
assembly and remove the lamp unit.
6.1.04 Front Fog Lamp Assembly
Figure /. Side Repeater Lamp Removal

2.
Disconnect the wiring at the rear of the lamp and
remove the assembly.
Procedure

1.
Remove the front apron undertray. Access the rear
of the fog light assembly
Figure 1. Front Fog Lamp Removal
2.
3.
Remove two bolts and lower the lamp assembly
from its bracket.
Disconnect the lamp loom and remove the fog
lamp assembly.
6-4 May 1996

[EM^^^

Electrics
Wiper Motor / Alternator - Removal Procedures
6.2.01 Windscreen Wiper Motor 6.3.01 Alternator
Procedure

1.
Disconnect the battery.

2.
Disconnect the wiper motor multi-plug.
3. Remove the nut and lockplate (Fig 1-1) from the
motor gearbox shaft and release the drive bracket
from the shaft.
Figure 1. Windscreen Wiper Motor

4.
Remove three nuts (Fig
1
-2) and remove the motor
from its mounting bracket.
Procedure

1.
Disconnect the battery earth
lead.

2.
Using a 3/8" ratchet handle, release the drive belt

tension.
Slip the belt from the water pump drive
pulley and from the alternator drive pulley.
3. Release the ignition leads from the support on the
alternator top mounting.

4.
Remove the alternator output lead cover, remove
the nut and washers and disconnect the alternator
output
lead.

5. Disconnect the electrical plug on the rear of the
alternator.
6. Remove the alternator lower mounting bolt.
Figure 1. Alternator Mountings
7. Loosen the alternator upper mounting bolt, support
the alternator, remove the upper bolt and the
alternator.
Replacement is the reverse of the removal procedure. The
drive belt is tensioned automatically by the spring loaded
idler on refitting the main drive belt.
May 1996 6-5

Electrics
Starter Motor / Steering Wheel - Removal Procedures ^n:M3^^2?
6.3.02 Starter Motor
Procedure

1.
Disconnect the battery.

2.
Remove the inlet air trunkins
Figure 1. Starter Motor Mountings
3. Disconnect the starter solenoid connector and the
starter motor power lead at the solenoid.

4.
Remove the top starter motor securing bolt.
Note:
The
top bolt is from tlie
engine
side on auto
cars

and from ttie gearbox side on manual cars.
5. Raise the car on a hoist and whilst supporting the
motor, remove the lower starter motor securing
bolt.
6. Lift the motor from the bell housing and remove it
from the vehicle by positioning it vertically and
lowering it down in front of the oil filter.
6.5.01 Steering
Wheel and Horn
Switches
Procedure

1.
Remove the steering wheel centre pad.
Figure 1. Steering Wheel and Horn
2. Mark the position of the steering wheel relative to
the steering column to ensure correct replacement.
3. Removethesteeringwheelsecuringnutand remove
the steering wheel.
6.5.02 Column Switches
Procedure

1.
Remove the steering wheel.

2.
Remove three screws and the column switch cover.

1^

Figure 1. Column Mounted Switches
3. Cut the tywraps securing the switch loom to the
steering column. Disconnect the loom plugs.

4.
Release 4 screws and
1
ift the switch assembly off the
steering column.
6-6 May 1996

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Electrics
Ignition Switch / Instrument Panel - Removal Procedures
6.5.03 Ignition Switch 6.5.04 Instrument Panel
Procedure

1.
Disconnect the battery.

2.
Remove three screws and the steering column
lower cover.
Procedure

1.
Disconnect the battery.

2.
Remove the four screws from the instrument pane!
surround and remove the surround.
Figure 7. Ignition Switch
3.

4.

Loosen thegrub screw securing the switch and ease
the switch from its location.
Disconnect the switch multi-plug and remove the

switch.

Figure 1. Instrument Panel Removal
3. Remove two screws from the top edge of the
instrument panel and withdraw the panel.

4.
Detach the three electrical connectors and remove
the instrument panel.
5. Panel warning lamps are 1.2W bayonet fit. The
larger panel illumination lamps are also 1.2W
bayonet fit.
May 1996 6-7

Electrics
Radio / Air-Con Switch Panel - Removal Procedures [D:m3^^2?
6.5.05 Radio
Procedure

1.
Press the release button and remove the radio front
control panel.

Figure
/. Radio Removal

2.
Insertthe radio removal tool intothe slots in thetop
edge of the radio body to release the catches. Pull
forward on the radio and remove it from the centre
console.
3. Disconnect the speaker, CD, aerial, power and
earth connectors.
6.5.06 AirConditioningand
Switch
Panel
Procedure

1.
Remove the radio.

2.
Pull off the air conditioning control knobs.
3. Lift of the console controls finisher panel.
Figure h Air Conditioning Panel Removal

4.
Remove four screws and pull forward the centre
console control panel.
5. Disconnectthefiveconnectorsinthecentreconsole
wiring and remove the centre console control

panel.

6-8 May 1996