ASTON MARTIN DB7 1997 Workshop Manual

Air Conditioning
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8-74 May 1996

^?
The Aston Martin Lagonda Diagnostic System
Contents
Installation Instructions
Introduaion 9-2
The Aston Martin Diagnostic System 9-2
Diagnostic System Cables 9-5
Base Station Installation 9-8
Problem Solving 9-16
Service Centres 9-21
Service and Maintenance 9-22
Technical Specifications 9-24
Operating Instructions
The Aston Martin Lagonda Diagnostic System 9-27
Software 9-29
Cable Setup 9-31
Diagnostic Sockets - 97 MY 9-31
Establishing Communications 9-32
System Menu Selections 9-32
PDU Use 9-32
Engine Diagnostics - 97 MY 9-33
Transmission Diagnostics 9-40
Climate Control Diagnostics 9-43
Anti-Lock Brakes Diagnostics 9-43
Passive Anti-Theft (PATS) Diagnostics 9-44
Airbag System Diagnostics 9-45
Seat Belt Pretensioner Diagnostics 9-47
Print Facility 9-49
Digital Multimeter 9-50
Diagnostic Trouble Codes 9-53
Datalogger 9-55
Datalogger Example 9-63
Training 9-66
OBD II Scan Tool 9-66
System Self Test 9-69
The Asterisk (*) Menu 9-69
System Setup 9-70
May 1996 9-1

The Aston Martin Lagonda Diagnostic System
Installation Instructions E:MB^^?
Introduction The Aston Martin Diagnostic System
This guide contains instructions for the installation
of the Portable Diagnostic Unit hardware in Aston
Martin Dealer workshops. To achieve maxinnum
benefit from the system, please follow the
instructions carefully. The following System
Diagram shows the principal system components
and panel details.
This introduction briefly describes the system and
its capabilities. This is followed by the Installation
and Power-Up procedures which give detailed
instruaions on how to start the system and access
the self-contained Interactive
Training
Programme.
The subsequent sections detail the fault diagnosis
and maintenance procedures.
WARNING:
The equipment must
only
be used by

trained
personnel.
Care should
be taken to use the

equipment in accordance with the operating

procedures.
Observe
all safety
warnings
in this

guide.
If any part of
the system is damaged do not

use it. Call your local CenRad
Service
Centre

immediately
for a
substitute
part.
Refer to
'Parts

Ordering'.
The Aston Martin Diagnostic System is a new
generation diagnostic
tool
which fulfils
a
number of
functions in aiding the technician to quickly and
accurately locate faults. The heart of the system is
the Portable Diagnostic
Unit,
a
lightweight powerful
computer/measurement system providing a step-
by-step user friendly interface for the technician.
PDU functions include:
Data Logger - The ability to monitor and record
control module signals even whilst the vehicle is
being driven.
On-Line Help-Containing detailed descriptions in
the
operation
ofthevehicleselectroniccomponents.
Vehicle Setup - The ability to setup various
adjustable parameters to their optimum settings.
Diagnostic Trouble Codes - The ability to extract
recorded fault information from the DB7's control
modules.
Each of
these
funaions is described in detail in the
PDU Users Guide.
WARNING: If
the system is used to measure high

voltages,
these voltages can appear on the pins of

other
connectors in
the
system.
Ensure
that socket
covers
are
fitted
on
unused
sockets.
Ensure
that all

connections
are
made
prior to
applying the high
voltage to
the
probes.
Do not
leave the equipment
unattended
in
this
state.
The maximum
voltage

that may be applied
between the
test
probes is 150
volts
AC or DC.
Radio Interference Statements
This digital apparatus does not exceed the Class A
limits for radio noiseemissionsfromdigital apparatus

as set
out
in
the radio interference regulations of the
Canadian Department of Communications.
This equipment has been tested and found to
comply with the limits for Class A digital device
pursuant to part 15 of the Federal Communications
Commission (FCC) rules. However, operation in
close proximity to domestic communication
equipment may cause interference. It is the
responsibility of the user to avoid or correct this

condition.

9-2 May 1996

'=^
The Aston Martin Lagonda Diagnostic System
Installation Instructions
12 10
19 22 21 20
VIA A / /^^>^ I B T
A-XA^I'A® QA
13
16
18 29
Figure 7. The Aston Martin Diagnostic System
Key to Figure 1

1.

2.

3.

4.

5.
6.
7.

7.1.

7.2.
7.3.
7.4.
7.5.
7.6.
7.7.
8.
9.

10.

11.

LCD touch screen
Power on switch
Power off switch
Screen contrast control
Battery charge indicator (Orange/Yellow)
Power on indicator (Green)
PDU interface connectors
Black probe
Red probe
Current clamp
Pressure transducer
Vehicle battery adaptor (VBA)
VIA, base station, serial interface and system test
Temperature probe
Battery cover
Connector A for vehicle cable
VIA power input cable
Connector B for vehicle cable

12.

13.

14.

15.

16.

17.

18.
19.

20.

21.

22.

23.

24.

25.

26.

27.

28.
29.

Connector for PDU cable
VIA status indicator
Vehicle Interface Adaptor (VIA)
Portable Diagnostic Unit (PDU)
Base Station
Base station door
Base station door lock
Charging and loading data connector
Secondary charging connector
Power on indicator (Green)
Status Indicator (Red)
CD-ROM drive
Electronic module securing screws
CD-ROM eject button
CD-ROM drive active light
Audio output (not used)
Audio level (not used)
Base station drawer.
May 1996 9-3

The Aston Martin Lagonda Diagnostic System
Installation Instructions "^P
Component Identification
Base Station (Fig
1
-16)
The Base Station is a wall or bench mounted steel
unit on which up to two Portable Diagnostic Units
and a Vehicle Interface Adaptor can be stored.
Portable Diagnostic Unit (PDU) (Fig 1-15)
The PDU is a hand held diagnostic tool utilising a
touch sensitive screen and serial communications
capability
Electronics Module
The Electronics Module is located behind the base
station door (Fig
1
-17) and facilitates the charging
of the PDU battery. Also contained in the module

is
the CD-ROM drive (Fig
1
-23) for the storage of
al I

system software. The PDU must be connected to
the electronic modu le whenever it is located on the
base station.
Vehicle interface Adaptor (VIA) (Fig
1
-14)
The VIA enables the PDU to interface with vehicle
systems not equipped with serial communications.
Vehicle Battery Adaptor (VBA)
The VBA provides the correct voltage to power the
PDU from the vehicle battery and also protects the
PDU from any interference from the vehicles
electrical systems.
Controls
The Touching the Power On button (Fig 2-2) will
switch on the unit and bringon the screen backlight.
Also note that the Power On Indicator (Fig 2-6) will
illuminate.
Touching the Power Off button (Fig 2-3) will turn off
the unit, screen backlight and power on indicator.
The Touch Sensitive Screen (Fig 2-1) is used to
display information in digital or in graphic forms.
Program options are also displayed and may be
selected by touching the appropriate area of the

screen.

CAUTION:
The use of sharp pointed implements
will damage the touch sensitive screen. Use only
light finger pressure to operate the PDU.
To adjust the screen contrast, rotate the contrast
control (Fig 2-4) to the required position.
In order to preserve the battery charge, the power
to the screen backlight is automatically switched
off after 5 minutes of inactivity. In this state, the
Power On indicator (Fig 2-6) remains illuminated
to indicate that the PDU is in stand-by mode.
Touching the screen will return the PDU to normal
operating mode.
Diagnostic System Cables
Cables
The cables connecting the diagnostic system
elements together and to the electronic units of the
vehicle are identified in the following illustrations.
The cables should be stowed in the base station
drawer or in the pockets of the PDU and VIA
carrying cases.
CAUTION: Care must be taken when using the
vehicle cables since they are capable of
passing

high currents. Short Circuits are a fire
risk.

7 5 6
Figure 2. The Portable Diagnostic Unit
9-4 May 1996

^^?
The Aston Martin Lagonda Diagnostic System
Installation Instructions
Diagnostic System Cables
3130-0028-01 VIA-VBA Cable
cn3>

3130-0753-00
3130-0754-00
Red and Black Croc Clips

acciiiCXlI[
:
3

3130-0756-00 Transmission Test Cable
3130-0026-01 Scope and Self Test Adaptor Cable
3130-022-01 Red Probe 3130-023-01 Black Probe

EEItJ-

3130-1242-00 Aston Martin Protocol Adaptor
May 1996 9-5

The Aston Martin Lagonda Diagnostic System
Installation Instructions mm^^?
Diagnostic System Cables
311
^ri M
r 1
3130-0030-01 VIA-PDU Cable
^
ctfa

3130-0778-00-B Anti-Lock Brakes
3130-0064-01 Base Station-PDU Cable
3130-0475-00 Test Probes
VBA
3130-0024-01 Vehicle Battery Adapti
3130-0764-00 Road Test Ext Cable
9-6 May 1996

E:E3'^?
The Aston Martin Lagonda Diagnostic System

Installation Instructions

Diagnostic System Cables
3130-1213-01 Aston Martin Current Probe

EEXI^^^

3539-1169-02 Aston Martin Printer Lead
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3538-0100-01 Aston Martin Multi Protocol Adaptor
May
1996 9-7

The Aston Martin Lagonda Diagnostic System
Installation Instructions ^7
Base Station installation
It is recommended that the base station is wall
mounted (Fig 3). Alternatively it may be mounted
on a bench. The base station houses the CD-ROM
drive and power supplies.
Note: The electronic module should only be fitted
after

the base station has been installed.
Wall Mounting
It
is
importantthatthefollowing points be considered
before carrying out the mounting procedure.
The location should be close to the vehicle repair

bays.
The base station will require a power outlet
close by, such that the 2m mains lead will
comfortably reach the outlet.
Thewall plate should be attached with fourfasteners,
each of which has a minimum pull-out strength of
300 kg (662 lb). Thefourfasteners are not supplied,
as the type of fastening will depend on the wall

material.
The mounting holes in the wall plate are
8mm diameter with a maximum clearance for a
socket spanner of 30mm. It is recommended that
6mm diameter bolts are used to secure the wall

plate.

WARNING: The mains power outlet must be dose
to the equipment and be clearly recognisable as
the power source for safety reasons.
French Market
Only:
Do not connect the PDU
equipment
to
IT(lmpedante Terre) power systems.

r

900mm
Figure 3. Wall Mounted installation
WARNING: This equipment must be earthed via
the
mains
lead through the outlet socket. In markets
where three pin main power outlets are not
available, a separate earth point must be used
Procedure

1.
Select a suitable location.

2.
Mark a horizontal line on the wall 900mm above
the floor (Fig 3)
3. Removethetwoscrewssecuringthewall mounting
plate to the base station and remove the wall
mounting plate.

4.
Holdthewall mounting plate up to the marked line
and mark four hole positions for the wall mounting
plate bolts.
5. Drill the wall to the correct diameter and depth
required for the four bolts.
6. Securely fasten the wall mounting plate to the
wall.

Lift the base station onto the wall mounting plate,
fit and tighten the two screws/washers to secure the
base station to the mounting plate.
CAUTION: The gap beneath the base station
should be maintained free from obstructions to
allow a flow of air under the unit for cooling.
9-8 May 1996

^^?
The Aston Martin Lagonda Diagnostic System
I nstal lation I nstructions
Bench Mounting
The base station may also be mounted on a bench, which
must be in a safe position, stable and protected form
hazards and impacts. The base station must be mounted
at the back of the bench. 'Z' clips are provided for
permanent mounting. The bench surface must be kept free
from dust at all times.

CAUTION:
A gap under the base station must be
maintained free from obstructions to allow a flow of air
under the unit for cooling.
Electronic Module installation
WARNING: The base station electronic module must be
disconnected from the mains supply prior to installation/
removal from the base station assembly. DO NOT
reconnect to the mains supply until the module is safely
fitted into the base station. This unit must be earthed.

Note:
Users in North America are advised to replace the
ceramic mains fuse in the electronic module with theglass
fuse supplied.
Procedure

1.
Unlock the base station door

2.
Pull the right spring-loaded hinge (Fig 4-1) and
remove the door.
3. Removetheelectronicsmodulefrom the packaging
and place it on a firm surface.

4.
Remove the two screws and washers from the front
of the module (Fig 4-3).
5. Insert the mains power lead into the socket at the
rear of the module Fig 4-4), DO NOT CONNECT
TO THE MAINS SUPPLY.
6. Insert the two guide pins on the sides of the module
(Fig 4-5) into the base station slots.
7. Slide the module into the base station until fully

home,
raise the front so that it is level and draw it
slightly forward.
8. The two connectors on the front of the module will
appear through the matching holes in the base

station.
Support the module whilst refitting the two
retaining screws and washers (Fig 4-6).
9. Secure the mains lead to the underside of the base
station using the two cable ties provided (Fig 4-7).

10.
If bench mounting, the base station will need to be
turned on its back to install and secure the mains

lead.

11.
Refit the base station door.
CAUTION: Take care to avoid the sharp edges of the
module whilst installing. Take care to support the
module from the underside until the mounting
screws are secured.
Figure 4. Electronic Module Installation
May 1996 9-9