2010 ASTON MARTIN V8 VANTAGE Workshop Manual

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
12-3-16 Workshop Manual May 2007
Troubleshooting
The areas for inspection (steps) are given according to various circuit malfunctions. Use the following chart to verify the
symptoms of the trouble in order to diagnose the appropriate area.
Symptom(1)
Symptom (2)DescriptionPossible Cause
Amount of air blown from vents
does not change. Fault in blower system. • Blower motor fault
• Blower unit fault
• Power transistor system fault
• Climate control unit fault
Shake the wiring harness and connectors wh ile performing the inspection to discover whether poor contact points are the
cause of any intermittent malfunc tions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (4)DescriptionPossible Cause
Air intake mode does not change. Air intake mode does not change
when switching REC FRESH
mode. • Air Intake Actuator fault
• Air intake door fault
Shake the wiring harness and conn ectors while performing the inspection to di scover whether poor contact points are the
cause of any intermittent malfunc tions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (5)DescriptionPossible Cause
No temperature control with A/C
Module. Temperature does not change
with operating temperature
control dial• Air Mix Actuator (5 V signal) system fault
• A/C Module (potentiometer GND signal) system
fault
• Air Mix Actuator (potentiometer input signal) system fault
• Air Mix Actuator (potentiometer GND signal, motor drive signal) system fault
•Air Mix Actuator system fault
• A/C unit air mix door fault
Shake the wiring harness and conn ectors while performing the inspection to di scover whether poor contact points are the
cause of any intermittent malfunc tions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (6)DescriptionPossible Cause
Windshield fogged. • A/C compressor does not
operate while airflow mode is
in DEFROSTER or HEAT DEF
modes
• Air intake mode does not change to FRESH while
airflow mode is in
DEFROSTER or HEAT DEF
modes • A/C Module (B+ signal) system fault
• Air intake actuator fault
• A/C Module (RECIRCULATE, FRESH signal)
system fault
• Fault in blower unit air intake doors
Shake the wiring harness and conn ectors while performing the inspection to discover whether poor contact points are the
cause of any intermittent malfunctions. If there is a problem, check to make sure conn ectors, terminals and wiring harnesses
are connected correctly and undamaged.

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
May 2007 Workshop Manual 12-3-17
Symptom (7)DescriptionPossible Cause
Air from vents not cold enough. Magnetic clutch operates but A/
C system malfunctions. • Drive belt fault
• Fault in blower unit or condenser
• Fault in Receiver / Drier or expansion valve
(valve closes too much)
• Fault in refrigerant lines
• A/C compressor system fault, insufficient compressor oil
• Over filling of compressor oil, fault in expansion valve or A/C unit air mix link system
Symptom (8)Possible Cause
No cool air. Magnetic clutch does not
operate. • Fault in PCM A/C cut control system
• Fault in A/C Module
• Fault in refrigerant pressure switch
• Fault in PCM (A/C signal)
• Fault in PCM (IG1 signal)
• Fault in A/C compressor
•Fault in A/C relay
• Fault in Evaporator Temperature Sensor
Shake the wiring harness and connectors wh ile performing the inspection to discover whether poor contact points are the
cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses
are connected correctly and undamaged.
Symptom (9)Possible Cause
Noise while operating A/C
system. Noise from magnetic clutch, A/C
compressor, hose or refrigerant
line. • Magnetic clutch operation noise
• A/C compressor slippage noise
• Hose or refrigerant line interference noise

Air Conditioning (A/C) System (12.03)
Climate Control (12.00)
12-3-18 Workshop Manual May 2007

May 2007 Workshop Manual 13-1-1
Information, Gauge and Warning (13.00)
Contents
Instrument Cluster (13.01) .................................. 13-1-2Description ............................................................. 1-2 Information and Warning Lamps ............................ 1-3
DIM Display layout ................................................ 1-4

Instrument Cluster (13.01)
Information, Gauge and Warning (13.00)13-1-2 Workshop Manual May 2007
Information, Gauge and Warning (13.00)
Instrument Cluster (13.01)
Description
The Driver Information module contains the necessary electronic control units and memories to control, process and
present all necessary vehicle information to the driver.
1. Information on vehicle performance is presented in visible form using the instruments and gauges. These
devices present such information as Vehicle Speed,
Engine Speed, Fuel Level and Coolant Temperature.
2. Information on vehicle status is presented by an array of warning lights.
• Red - indicate immediate danger warnings
• Amber - indicate conditions which are serious but not immediately dangerous
• Green and Blue - indicate normal actuation of items such as turn signals or fog lamps
The message centres and the shift position Sensor
display are used to present information on the distance
recorders (trip meters), current gear mode and current
gear engaged.
3. The right message centre is used to display any warning/ information message text. These text messages may be
reinforced in some cases by illumination of the
appropriate warning lamps.
The following table defines all information and warning
lamps and their significance:

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Instrument Cluster (13.01)
Information, Gauge and Warning (13.00)
May 2007 Workshop Manual 13-1-3
Information and Warning Lamps
Name / FunctionDescriptionSymbolInput SignalPower
On Check
General Warning
– Amber/Red Controlled internally by the DIM. It is used in conjunction with
several text messages to indicate information to the driver. Internal
SRS (Airbag) Controlled externally by the SRS module and indicates a fault in the SRS module. CAN Yes (5 Seconds)
High Engine
Coolant Temp. This tell tale is controlled internally by the DIM. Activated
when the engine coolant temperature signal from the CAN bus
reaches a pre defined value. (The
actual symbol is not lit, only
the red LED.) CAN
DSC Controlled externally by the ABS/DSC module. Indicates when the system is in operation or when it is turned off. The tell tale
is triggered by a CAN signal. CAN Yes (5 Seconds)
ABS Controlled externally by th e ABS/DSC module. Indicates a
fault in the ABS system. The tell tale is triggered by a CAN
signal. CAN Yes (5 Seconds)
Rear Fog Lights Controlled externally by the SRS module. Indicates that the
rear fog lights are turned on. The tell tale is triggered by a CAN
signal. CAN Yes (5 Seconds)
Seat Belts Controlled externally by the CEM. Indicates that the seat belts are not fastened properly. The tell tale is triggered by a CAN
signal. CAN Yes (5 Seconds)
Brake (General) Controlled externally by either the CEM or the ABS / DSC module. It indicates low brake fluid level, brake fault and park
brake. The tell tale is triggered by two low side inputs or a CAN
signal. Low side x 2
and
CAN Ye s ( 5 S e c o n d s )
Side Lights Controlled externally by th e CEM. Indicates that the side lights
are on. High side
Oil Pressure Controlled exte rnally by the PCM. Indicates low oil pressure.
The tell tale is triggered by a CAN signal. CAN Yes (5 Seconds)
Battery Charge Controlled externally by th e CEM. Indicates that the alternator
is no longer charging the battery properly. The tell tale is
triggered by a CAN signal. CAN Yes (5 Seconds)
Fuel Level Low Controlled internally by the DIM. Activated when the fuel level drops below a pre defined value. The fuel information is
provided from the CAN bus. The symbol is not lit, only the
amber LED. CAN
Turn Left/Right Controlled externally by th e CEM. The tell tale is triggered by a
CAN signal. CAN
High Beam Controlled externally by the CEM. Indicates that the high beam is switched on. The tell tale is triggered by a CAN signal. CAN
Check Engine Controlled externally by the PCM. Indicates a fault in the engine management system. The te ll tale is not connected to
the microprocessor. Low side
Tyre Pressure Controlled by the DIM. In dicates a low or rapid change in the
tyre pressure or a tyre pressure monitoring system fault. Low side Yes (5 Seconds)
Not Used
PATS Controlled externally by the PCM. Indicates key acceptance status. Low side

Instrument Cluster (13.01)
Information, Gauge and Warning (13.00)13-1-4 Workshop Manual May 2007
DIM Display layout
The DIM contains two message centres, which are used to
inform the driver about the vehicles status.

Message Centres
The left Message Centre is used to display the odometer (C),
the Cruise control status (C) and the T1 or T2 trip distance
(A).
Shift Position Sensor
The Shift Position Sensor display indicates when the shift
lights are activated. The display is duel colour.
Green - normal operation
Red - defined situations.
Message Centre Right
The Message Centre Right is used to display the trip function
information and warning/information messages.

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May 2007 Workshop Manual 14-1-1
Power Supply (14.00)
Contents
Battery System (14.01)......................................... 14-1-2Description ............................................................. 1-2 Battery Connect Switch .......................................... 1-2
Battery Disconnection and Alarm Activation........... 1-2
Charging Circuit ..................................................... 1-3
+12 Volt Distribution ............................................. 1-3
Specifications.......................................................... 1-4
Maintenance ........................................................... 1-4 Battery Disconnect Switch-Renew .......................... 1-4
Battery Conditioner-Renew .................................... 1-4
Battery Disconnect Switch to Bulkhead
Stud Cable Assembly-Renew .................................. 1-5
Battery to Battery Disconnect Switch
Cable Assembly-Renew .......................................... 1-6
Bulkhead to Starter Jump Terminal
Harness-Renew ...................................................... 1-7
BDS to Bulkhead Dirty Feed Harness-Renew ......... 1-8
Alternator and Regulator System (14.02) ............ 14-2-1 Description ............................................................. 2-1
Specifications.......................................................... 2-1
Maintenance ........................................................... 2-1 Alternator-Renew................................................... 2-1