seat memory ASTON MARTIN V8 VANTAGE 2010 Workshop Manual

Battery System (14.01)
Power Supply (14.00)14-1-2 Workshop Manual May 2007
Power Supply (14.00)
Battery System (14.01)
Description
The 12 volt negative earth (‘-’ ve) battery is located under the RH side rear seat and is grounded to the vehicle body.
The battery positive (‘+’ ve) terminal is connected to a battery connect switch. The connect switch may be accessed by
raising the rear seat cushion.
Battery Connect Switch
When the battery connect switch is in an ‘open’ state it
isolates electrical power from all systems except the ‘keep
alive memory’ functions in the PCMs, TCU, radio,
navigation system and door modules.
This function isolates electri cal power from vehicle circuits
under all normal service conditions with the following
exceptions:
• Before any welding or other work which may induce high voltages into the electronic control modules
• Before disconnecting any of the control modules with ‘keep alive memory ’
• Before any major service task (e.g . engine removal)
• Before installing any accessory which involves modification of vehicle wiring
In the above four exceptions the battery earth (‘-’ ve) lead
should be disconnected.
When the battery earth (‘-’ ve) terminal is disconnected,
data held in keep alive memories will be lost. After connecting the battery, the radio preset stations and the
door window controllers will require to be reset (adaptive
learning data in the PCM module will require to be re-
learned by driving the vehicle for some miles in a range of
driving conditions),
driveability may be slightly
compromised until the vehicle systems have completed
their adaptive learning routines again.
Battery Disconnection and Alarm
Activation
The vehicle is installed with an alarm which will be activated
if the battery is disconnected. This alarm is driven by a back
up battery within the alarm sounder unit.
To prevent the alarm from so unding when the battery is
disconnected (for workshop procedures), disconnect the
battery within 10 seconds of switching off the ignition.
Always carry out the following procedures upon connection
of the battery.
• Reset the clock
• Reset the radio preset programmes.
• Reset the window maximum up and maximum down settings.
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AML EOBD System Operation Summary

Rory O’Curry Aston Martin Lagonda CONFIDENTIAL 1 May 2009
[email protected] AML EOBD Monitors 07 ROC.doc Page 35 of 43
Inspection Maintenance Readiness Code


I/M readiness information indicates whether a full diagnos tic check has been completed, i.e. the minimum
number of driving cycles necessary for MIL illumination has been completed since computer memory was
last cleared. Information available to the test equi pment or diagnostic tool includes all the non-continuous
monitors. Misfire, Fuel System and CCM monitors are assumed to complete if all the non-continues
monitors have completed.

A P1000 DTC is stored after an OBD reset is performed, until the I/M readiness check is complete.



Tamper Protection


The AML EOBD System shall meet ISO DIS 15031-7 / SAE J2186 - Diagnostic Data Link Security
requirements, to write-protect any re-programmable co mputer code. Additional data will be stored in the
PCM Vehicle Identification Block to enable retrieva l of VIN (although VIN may not be in the VID block
for all vehicles), CALID (CALibration ID identifi es the specific calibration) and CVN (Calibration
Verification Number, similar to an encrypted check sum). CALID and CVN will be tracked for all initial
releases, running changes and field fixes.

To achieve this data retrieva l J1979 Mode 09 will be implemented for VIN, CALD and CVN.



Serial Data Link Connector

The connection between the vehicle and the diagnostic tester shall comply with ISO DIS 15031-3 / SAE
J1962. Whereby the connector will be located in the passenger compartment in the area bounded by the
driver's end of the instrument panel to 300mm beyond the vehicle center line, attached to the instrument
panel and accessible from the driver's seat, and permit one handed / blind insertion of the mating
connector.



Serial Data Link Communication Protocol

The Communication Protocol used by the AML EOBD system will conform to ISO DIS 15031-4 / SAE
J1850, Class B Data Communication Network In terface (41.6kbps) / ISO DIS 15765-4 Diagnostics on
Controller Area Network (CAN).

Basic diagnostic data and bi-directional control inform ation will be provided using the format and units as
described in ISO DIS 15031-5 / SAE J1979 and will be av ailable to Test equipment and diagnostics tools
meeting the requirements of ISO DIS 15031-4 / SAE J1850.