warning ASTON MARTIN DB7 1997 Manual PDF

^^?
The Aston Martin Lagonda Diagnostic System
Users Guide
Operation
On selection of DMM the general screen, as shown in Fig.

1,
will be displayed.
Voltage is the default selection for measurement, with red
and black probes selected
as
sources.
To choose alternatives
to these options, press the relevant description for change
followed by the 'tick' icon in the top, right-hand, corner.
If the measurement mode (Voltage) is selected for change,
followed by a confirming 'tick', a screen as show will be

displayed.

Select DMM Measurement
^Q^||[
Resistance
Pulse Period
Pulse Width
(low)
Voltage (AC)
Frequency
Pulse Width
(High)
Duty Cycle
DMM Measurement Selection
Selection of any option from this screen, followed by a
confirming 'tick', will return the operator to the general
screen but with the new mode displayed against DMM.
If 'Resistance' is selected an additional
icon,
showing an
audio symbol, will appear above the "EXIT" display. This
icon allows the enabling / disabling of an audible signal
which sounds when measured valuefal
Is
below 0.5 ohms.
Touch the icon to toggle the warning ON / OFF directly,
no confirming 'tick' is necessary. A 'cross' is displayed
over the icon when warning is turned OFF.
Measurement Source Selection
If
a
measurement source (either RED or BLACK PROBE) is

selected,
a screen as shown will be displayed. This screen
may vary depending upon the various probes which can
be connected to the PDU.Afull list of possiblesources will
be displayed on the 'Source Select' screen.
Select (-) Channel
BLACK Probe
Battery positive
Battery negative
Module pin
Selection of (+) and (-) measurement channels
Selection of any source option, except "Module Pin", will
return the user to the general screen, which will display
the revised source.
Module Pin Selection (Air-Con only)
Selection of "Module Pin" will display a screen as shown.
Selection of one of the options displayed on this screen
allows the operator to make measurements on designated
pins of the air conditioning control module. When the air
conditioning module is selected PDU will display a wiring
connection diagram, as shown.
Cable Setup
Module Connection
September 1996 9-51

^7
The Aston Martin Lagonda Diagnostic System
Users Guide
Diagnostic Trouble Codes
Introduction
The 'Diagnostic trouble codes' application enables the
PDU to monitor the trouble codes logged in selected
control module's and provides the following functions:
• Decode and display any trouble codes logged by
the control module(s) being monitored.
• Decode and display enhanced diagnostic
information, together with any count of the number
of occurrences, when supported by the control
module(s).
• Clearsomeorallofallthesetroublecodes selected
by the user on the PDU screen, when supported by
the control module(s).
Diagnostic Trouble Codes are logged by the Engine
Management and by the Automatic Transmission control
units and can be accessed using the PDU. Logged codes
in the 95 MY Teves Mk II ABS controller can only be
accessed using the brake warning light. The Air
Conditioning control unit does not log trouble codes.
Operation
From the Main Menu make the following selections:
Select Diagnostics
Select Engine or Transmission
The system will then load the appropriate
software
Select Diagnostic Trouble Codes
Connect the PDU to the car as shown on the
screen diagram
Select the / icon to confirm connection
The PDU will then interrogate the chosen control
unit and will display any logged trouble codes.
If no trouble codes have been flagged by the control
module, the PDU will display a screen similar to Fig. 15
The trouble code screen will be headed by a module title
block followed by a list showing all logged trouble codes
for the seleaed module.
Note: There may be more logged diagnostic trouble
codes than displayed on the first
screen.
Use the 'up
arrow' and 'down arrow' icons if
necessary
to scroll
through the total display.
On the Zytek engine management system only, each
trouble code definition will be individually selectable to
invoke the clear trouble codes screen. If one or more
trouble codes are selected, the clear all and clear selected
trouble code icons will be displayed.
On all other systems, only the 'Clear All' function is
available.
'Clear All' and 'Clear Selected Codes' Icons
Freeze Frame Data
m*
As any engine management trouble code is

logged,
the system takes a snapshot (freeze
frame) and records the state of all signals at
that time.
On the Zytek engine management system (95 MY), freeze
frame data can be displayed by selecting a logged trouble
code and touching the 'snowflake'
icon.

On the 97 MY EEC V engine management system, freeze
frame data is accessed using the OBD II scan
tool.

ECC-V EMS DTC'S
No fault codes present
l^
D
a
El
The No Fault Codes screen
September 1996 9-53

The Aston Martin Lagonda Diagnostic System
Users Guide
•=2?

Clear all Trouble Codes
Selecting the clear all trouble codes icon will invoke a
confirmation window.
EEC-V EMS
dri
dri
CONFIRM
Clear all logged trouble
codes?
O

'Clear
All Codes' confirmation
screen

Selectingthe'tick'will instructthePDU to clear all logged
trouble codes in the selected module
and
return to the no
logged codes screen.
Select the 'tick' icon to exit Diagnostic Trouble Codes.
Clear Selected Trouble Codes
(95 MY Zytek Engine Management Only))
If
you
wish only to clear selected codes on the Zytek ECU
and
leave others
for later
investigation,
proceed
as
follows:
Highlight only the trouble code(s) to be cleared.
ZYTEK EMS
1 : Idle speed control valve driver #1
5 : Purge Valve driver #1
12 : Cooling fan#l relay driver
14 : Lannda heater
#2
driver
1 : Idle speed control valve driver #1
Highlighting
Selected
Trouble
Codes

Select the 'clear selected trouble codes'
icon;
this will
invoke a confirmation window.
Selectingthe 'tick' icon will instruct
the
PDU to clear only
the selected trouble codes from the control module fault

table,
and if successful, the system will return to the
'Diagnostic trouble codes' screen.
If any attempt to clear trouble codes is unsuccessful, a
warning window will be displayed.
This will indicatethat
some selected
trouble codes remain
logged,selectingthe'tick'iconwillreturntothe'Diagnostic
trouble codes' screen.
Select the 'tick' icon again to exit Diagnostic Trouble
Codes.
9-54 September 1996

The Aston Martin Lagonda Diagnostic System
Users Guide 5^^?
Only the data within the selected time period will be

stored.
A trigger is used to define the zero time point on
any waveform display. This is used to make it easier to
locate the actual point at which the fault occurred on the
waveform display. Triggers may take three forms.

1.
Manual Trigger
A manual trigger would be used in circumstances where
the technician can clearly identify the point when the fault
occurs and has access to the PDU at this point.
The trigger icon should be pressed on the waveform /
bargraph display (ortheon-road trigger icon) at the instant
the fault occurs. This will then become the zero point for
the waveform/bargraph display. The waveform/bargraph
display up to this point would have a negative form.

2.
Fault Code Trigger
The fault code trigger is used when the first indication of
a fault is normally by the appearance of a warning lamp
within the instrument pack. For some vehicle systems
Datalogger can trigger on specific fault codes, this type of
triggering is more precise than simply triggering on the
warning lamp.
This trigger
is
selected during the parameter customisation
process. To select a fault code to trigger 'on', set the fault
code (parameter) to record.
Asign the display order by touching the rectangle below
the Eye icon repeatedly until the desired display order
number is shown.
Press the rectangle in the trigger column.
Highlight the fault code parameter again and select the
magnifying glass
icon.
The trigger customisation screen
will be displayed.
Select the appropriate trigger style icon and select the tick
icon to confirm.
Press the Tick icon again to return to the main Datalogger

screen.

Select the Record icon to start data capture.
The unit will trigger when the fault code appears and will
set the zero time point of the waveform / bargraph display.
3. Specific Signal Trigger
It is possible to select a specific parameter or signal to
trigger Datalogger.
Triggering on specific signals is likely to be used when the
vehicle system has no on-board diagnostics or when
diagnostic information is not readily available at the time
the fault occurs, e.g. air-conditioning.
Thistypeoftriggershouldonly be used when it is known
that a particular signal has certain characteristics at the
time the fault occurs, e.g. one signal will always go from
12 Volts to ground, bringing on a warning lamp when a
particular fault occurs,
as
this is a known event, this signal
may be used to trigger the PDU.
Trigger Selection
Any of the record enabled parameters may be used to
trigger Datalogger.
To select a trigger highlight the parameter name, a
magnifying glass type icon will appear at the bottom of the

screen.

Select the magnifying glass type
icon.

The trigger action screen should be displayed.
ABSWl
Trigger

-T-

Anti-lock Brak
^ <n?
J^HL
^M

ov

es Warning
L

zF
!
=^

S.I.

°C
Ei
.amp
i
m,
Trigger Action Screen
9-58 September 1996

^^?
The Aston Martin Lagonda Diagnostic System
Users Guide
The following trigger options are available:
Triggers when the signal passes above
a
specified

value,
i.e. stop lamp.
Triggers when the signal passes below
a
specified

value,
i.e. Anti-Lock brakes warning lamp.
Triggers when the signa
I
passes outside
a
specified

band,
i.e. oxygen sensor feedback.
Triggers when the signal passes into a specified

band.

Once the type of trigger has been selected the trigger
vaiue(s) (i.e. the signal level at which the trigger point wil
I

occur) should be set.
These values are set by highlighting the existing value.

i
<n> jr:
ECT ^ 1
Trigger KBIT" ^
^^^^1

S.I.

°c
Oj
Engine coolant temperature

m
^
Highlighted Trigger Value
Press the calculator-style
icon.

A new screen should now be displayed.
Trigger Value Entry
Enter the required trigger value using the calculator-style
screen buttons.
The S.I. button enables unit selection, where applicable,
refer to S.I. Units.
Confirm the trigger value by pressing the 'tick'
icon.

The trigger screen will now be re-displayed.
Press the 'tick' icon to go back to the Parameter
Customisation screen.
Press the 'tick' icon again to return to the datalogger main

menu.

September 1996 9-59

The Aston Martin Lagonda Diagnostic System
Users Guide ^?
Datalogger Timing
Select the 'clock' icon from the main menu screen.
Confirm the selection using the 'tick'
icon.

The Datalogger timing screen should now be displayed.
Datalogger Timing
Signals
Sample Interval
Record time
Pre-trigger
Post-trigger
00:33:20

50%
00:16:40

50%
00:16:40
'^
23]
Datalogger Timing
The Datalogger timing screen allows customisation of the
sample interval and duration of data capture.
The display will identify the number of parameters
(channels) which have been selected to be recorded by
Datalogger.
Timing changes can only be made while data capture is
inactive. Entering Dataloggertiming while vehicle data is
being captured will display the current
settings,
but disable

selection.

Signals
The signals are the number of parameters set for sampIing
by Datalogger.
Sample Interval
The sample interval (frequency) defines the time interval
between successive block requests for all recorded
parameters.
The sample interval is selectable to enable fast response to
intermittent faults.
Note: Very short sample intervals may reduce test
duration
because ttie
PDU memory
becomes
full of
data.

Select the sample interval rectangle.
Acaiculator-style icon should nowbedisplayed. rrr?]
^
Aswellasa calculator-style icon beingdisplayed
there will bea hare
icon,
selecting this icon will
automatically set the fastest sample rate for the
selected parameters.
Note: The fastest sannple rate set using the 'hare' icon may
be too fast for some applications.
Select the calculator-style
icon.

A new screen should now be displayed.
Enter Test Duration
IDD 33 EDI
CL m m [Z]
Ci] ra [I]

1
1 2 1 3 1

0
1
Test Duration
Enter the required value in milliseconds up toa maximum
of 60,000 mS (1 min). At this stage Datalogger will not
verify if the entered sample interval can be achieved.
When Datalogger is actioned to start recording vehicle

data,
and the sample interval is shorter than the fastest
achievable capture time, a warning screen will be

displayed,
requesting changes to the sample interval.
Record Time
The record time (test duration) defines the length of the
data slice which will be preserved for analysis after the
fault occurs. The selected time will be split equally before
and after the fault trigger, e.g. a 10 minutes recording will
preserve data from 5 minutes before to 5 minutes after the
fault.
At the end of the record time the PDU will automatically
stop recording.
The record time is entered in the same way as the sample

interval,
by enabling the rectangle and selecting the
calculator-style
icon.

9-60 September 1996

^?
The Aston Martin Lagonda Diagnostic System
Users Guide
Datalogger Example
A customer reported intermittent illumination of the
anti-

Lock Brakes (ABS) warning lamp.
TheABScontrolmodulewas interrogated, producing fault
code 33 (95 MY), right-rear wheel speed sensor.
The PDU was used to check the wheel speed sensor
output using the ABS warning lamp as a trigger.
The PDU was setup to the vehicle's configurations and
Datalogger was accessed.
Datalogger automatically defaulted to the waveform

screen.

30V
MPROBE
OV
240KPH •
FLW<133
OKPH .
240KPH •
FRW<133
OKPH .
OS 95s 190s
^ ^ R • i=3
Datalogger Waveform Screen
The main menu icon was selected to access the main
menu screen.
The main menu screen is the main control screen for
access to Datalogger's subsystems.
^/^
The customisation icon was selected, and the
selection was confirmed using the 'tick'
icon.

The parameter customisation screen was then displayed.
Signals • c05 d^ CZf S.I.
ABSWL
BAT+P20
BAT+P3
FLS2
FLW<133
FLW>133
FRW<133
•
•
•
•
7
6

2||

3
V
V
V
1 2 3 W c
V
KPH
KPH
KPH
^=3
Parameter Customisation Screen
All pre-defined parameters were cancelled using the 'C

icon,
the screen was now similar to that below.
Signals ^ (n> •S'- rz^ S.I.
ABSWL
BAT+P20
BAT+P3
FLS2
FLW<133
FLW>133
FRW<133
V
V
V
A B C
1 2 3 ^ ^ i i C
V
KPH
KPH
KPH
Datalogger Main Menu
Fig. 35 Parameter Setup
The rectangle below the play icon next to 'ABSWl' (Anti-
lock Brakes System Warning Lamp) was selected to be

recorded.

The rectangle below the 'eye' icon in the 'ABSWl' row
was selected to be recorded.
The screen was scrolled down until 'RIW<133' was

displayed.

The rectangle below the play icon in row'RLW<133'was

selected.

The rectangle below the eye icon in row 'RLW<1 33' was

selected.

September 1996 9-63

The Aston Martin Lagonda Diagnostic System
Users Guide
ES^"^?

The screen was scrolled down until 'RRW<133' was

displayed.

The rectangle below the play icon on row 'RRW<133' was

selected.

The rectangle below the eye icon in row 'RRW<133' was

selected.

The 're-order' icon was then selected; this places
the record enabled parameters at the top of the
parameter list in numerical order.
The 'ABSWL' parameter was then selected and the trigger
switched on by touching the rectangle in the ABSWL line
below the trigger symbol.
The 'OV rectangle was then selected.
\
(n>

ABSWL
Trigger
S.I.
Anti-Lock Brakes Warning Lamp

1123;
11=3

Signals
ABSWL
RLW<133
RRW<133
BAT+P20
BAT+P3
FLS2
FRW<133
•
<r55
j^ •' S.I.
KPH
KPH
V
V

^K

KPH
i=
ABS Warning Light selection
^
Themagnifying-glasstype icon wasthen selected
to lead to the trigger customization screen.
The 'falling-edge' trigger icon was then selected.
DataLogger will then trigger from the ABSWL when the
signal passes below a specified value.
Selection of the OV trigger point
The calculator-style icon was then selected to
alter the trigger value. 11 2 31
Using the calculator-style screen buttons, a threshold
value of 6 Volts was entered.

1
7 1 1 8 1 1 9 1
Q
Q

5
1 6 1
LB m

1
^I 1 «J •
Trigger Point setting to 6V
ABSWL
Trigger
Anti-Lock Brak
^
(n>

•
1
'

^H

OV
es Warning L
.jr.
1

S.I.

°C
m
amp
J
l===-l
Falling Edge Trigger Icon
9-64 September 1996

5'=3^
The Aston Martin Lagonda Diagnostic System
Users Guide
The 'tick' icon was selected to return to the trigger screen
which will then be as shown below.
ABSWL
Trigger
Anti-Lock Bra
^ CTD
AJUJ
^B
6V
.J7.
!•
t 1
•
S.I.

fvl
^ t

]

kes Warning Lamp
Z-.Z4
The Trigger Set-Up Screen
The 'tick' icon was then selected to return to the parameter
customisation
screen.
The screen should now look similar
to that below.
Signals • cn> J^ [Z^ S.L
RLW<133
RRW<133
BAT+P20
BAT+P3
FLS2
FLW<133
•
V
KPH
KPH
V
V
^ Kr-
i c
V
KPH
ini
Parameter Customisation - Final Setup
The 'tick' icon was pressed to access the waveform
display.
The PDU was now ready to start recording data.
The 'record' icon was selected to start recording data.
When the fault occurred, the ABS warning lamp
automatically triggered the PDU. This will place a fixed
cursor on the screen and set the time base to zero. The
PDU will stop recording after the preset record time. If no
record time has been entered, the PDU will use its default
record time of 16minutes and 40 seconds. 8m20s pre-
trigger and 8m20s post trigger.
The following figure indicates the typical waveform display
for the wheel speed sensor fault. The dotted vertical line
represents the trigger point.
16V
ABSWL
OV
240KPH "
RLW<133
OKPH .
240KPH •
RRW<133
OKPH
-55.4s
7.29s
^ 39.6s
^ MMV
\!MV
m

wheel Speed Sensor Display
September 1996 9-65