Wiring and Circuit Protection (18.01)
Electric Distribution/Electronic Control (18.00)
May 2007 Workshop Manual 18-1-9
In a correctly protected circuit, the fuse is placed ‘ Inline’
between the power source in this case the battery and the
lamp. If the lamp goes ‘short circuit’, a massive current will
begin to flow and the fuse will fail causing an open circuit.
The battery and wiring are protected from over current
damage.
Below is the fuse symbol as shown on the circuit diagrams.
The number above the fuse symbol is the fuse number;
allocated to this fuse. The number below the fuse symbol is
the rating.
Resistors
A resistor is an electronic component that by way of its
construction reduces the current flowing through it. A
resistors unit of measure is the Ohm.
The diagrams below show a resi stor and a variable resistor.
Variable Resistors
A variable resistor works in the same manner as a normal
resistor but the resistance values can fluctuate. The
construction of a variable resi stor depends upon its use and
environment.
One example is for the fuel tank level sensor. The tank full
level is 10 ohms and the tank empty level is 204 ohms, the
resistance will vary between 10 and 204 ohms depending on
how much fuel is in the tank.
Lamps
Below is the symbol for a light bulb, shown below the
symbol is the power of the bulb in watts.
Switches
There are numerous of types of switch, several of examples
are shown below.
Normally Open Switch
2 Position Switch
3 Position Switch
Motors and Pumps
The same symbol is used for a pump or a motor, the
description differentiates between them.
Pump
Wiring and Circuit Protection (18.01)
Electric Distribution/Electronic Control (18.00)
May 2007 Workshop Manual 18-1-11
Maintenance
Forward Harness-Renew
Removal
1. Disconnect vehicle battery.
2. Remove LH headlamp (see Workshop Manual procedure 17.01.AB Headlamp Assembly - LH -
Renew).
3. Remove RH headlamp (see Workshop Manual procedure 17.01.BB Headlamp Assembly - RH -
Renew).
4. Release grommet from body, feed harness from inside of vehicle.
5. Disconnect multiplugs (x2) LH and RH side repeaters.
6. Disconnect multiplugs (x2) LH and RH pad wear indicators.
7. Disconnect multiplug (x2) LH and RH wheel speed sensors.
8. Disconnect multiplugs (x2) LH and RH air flow meters.
9. Disconnect multiplugs (x2) LH and RH headlamp bulb
monitoring resistors.
10. Remove nuts (x6) securing LH and RH earth leads to body (x6).
11. Remove screws (x4) LH and RH harness plate to body and release harness from plate.
12. Remove screen washer reservoir (see Workshop Manual procedure 01.16.DA Reserv oir and Motor Assembly -
Windshield Wash - Renew).
13. Remove fusebox (see Workshop Manual procedure 18.01.KD Fuse Box - Engine Bay - Renew).
14. Disconnect multiplug (x1) purge valve.
15. Disconnect multiplug (x1) ABS modulator.
16. Disconnect multiplug (x1) load level sensor.
17. Disconnect multiplugs (x4) forward harness to cabin harness.
18. Remove wiper motor and linkage (see Workshop Manual procedure 01.16.BA Linkage Assembly - Wiper
- Renew).
19. Remove cross member fr ont latch mounting (see
Workshop Manual procedure 01.14.BD Latch Assembly
- Hood - Renew).
20. Remove nuts (x2) securing earth leads to body (x2).
21. Disconnect multiplug (x1) heated front windshield.
22. Disconnect multiplug PAS sensor.
23. Disconnect multiplugs (x2) A/C compressor. 24. Disconnect multiplug (x1) horn.
25. Release forward harness to engine harness multiplug
(x1) from inner wing and di sconnect multiplugs (x2).
26. Disconnect multiplug (x2) cooling fans.
27. Disconnect multiplug (x1) ambient air temperature sensor.
28. Disconnect multiplugs (X2) crash sensors.
29. Release harness clips (70) and remove harness.
Installation
1. Layout harness around engine bay, feed harness into cabin area and secure grommet.
2. Secure forward harness clips (x70) to body.
3. Connect multiplug (x2) LH and RH side repeaters.
4. Connect multiplug (x2) LH and RH pad wear indicators.
5. Connect multiplugs (X2) LH and RH wheel speed sensors.
6. Connect multiplugs (x2) LH and RH air flow meters.
7. Connect multiplugs (x2) LH and RH headlamp bulb
monitoring resistors.
8. Position earth leads (x6), install and torque tighten nuts (x6).
9. Secure harness to plates (x2) and install plates to body.
10. Connect multiplug (x1) purge valve.
11. Install washer reservoi r (see Workshop Manual
procedure 01.16.DA Reservoir and Motor Assembly -
Windshield Wash - Renew).
12. Install fuse box (see Workshop Manual procedure 18.01.KD Fuse Box - Engine Bay - Renew).
13. Connect multiplug (x1) ABS connector.
14. Connect multiplug (x1) load level sensor.
15. Disconnect multiplug (x4) forward harness to cabin harness.
16. Connect multiplug (x1) heated front screen.
17. Connect multiplug (x1) PAS sensor.
18. Connect multiplugs (x2) A/C.
19. Connect multiplug (x1) horn
20. Position earth leads (x2), install and torque tighten nuts (x2).
21. Secure forward harness multiplug (x1) to inner wing and connect multiplugs (x2).
22. Connect multiplug (x2) cooling fans.
23. Connect multiplug (x1) am bient air temperature sensor.
24. Connect multiplugs (X2) crash sensors.
25. Install cross member front latch mounting 01.14.BD Latch Assembly - Hood - Renew).
26. Install wiper motor and linkage (see Workshop Manual procedure 01.16.BA Linkage Assembly - Wiper -
Renew).
27. Install LH headlamp (see Workshop Manual procedure
17.01.AB Headlamp Assembly - LH - Renew).
28. Install RH headlamp (see Workshop Manual procedure 17.01.BB Headlamp Assembly - RH - Renew).
29. Connect vehicle battery.
Repair Operation Time (ROT)
Warning
To prevent damage to elec trical components, always
disconnect the vehicle battery when working on the
vehicle's electrical system. The earth lead (- ve) must be disconnected first and reconnected last.
SB-17-0298
February 2009 Page 1 of 5
SERVICE BULLETIN
To: All Dealers
For the attention of: Service Manager/After Sales Manager
Please copy to: The Dealer Principal
The Warranty Administrator
Aston Martin Technician(s)
The Parts Manager
Reference
SB-17-0298
Issued:
26 February 2009
Model: DBS, DB9, V8 and V12 Vantage
VIN Range: All
Subject: Headlamp Drying Out Procedure Page 1 of 5
Reason for this Service Bulletin
The headlamps of DBS, DB9, V8 and V12 Vantage models can get condensation on the inside surface of the lens.
If a customer complains that their vehicle has condensa tion in a headlamp, do the applicable procedure that
follows to remove the condensation.
Workshop Procedures
DBS and DB9 Vehicles
1. Turn the steering to get access to the headlamp access panel for the correct headlamp.
2. Lift the vehicle and make it safe.
3. Release the quarter-turn fastener and remove the
headlamp access panel (refer to Figure 1).
Figure 1
4. Remove the dip-beam bulb cover from the headlamp.
5. Install a battery vent tube (part number 1R12-372635-AA) (1) into the head lamp in the position shown in
Figure 2 and Figure 3.
Service Bulletin SB-17-0298
February 2009 Page 2 of 5
Figure 2
1
SB0298-03
Figure 3
6. Attach an airline that has dry air, without oil to
the battery vent tube (refer to Figure 4)
CAUTION: MAKE SURE THAT THE
AIRLINE PRESSURE IS 2 BAR
OR LESS. IF YOU DO NOT,
DAMAGE TO THE HEADLAMP
CAN OCCUR.
Figure 4
7. Make sure that the opposite end of the vent tube has
not moved inside the headlamp. If necessary, adjust its
position.
8. Blow air through the headlamp until you can see no condensation remaining on the lens.
9. Let the air flow for 20 minutes more.
10. Remove the vent tube from the headlamp then do st eps 11 to 13 that follow quickly before more moisture
can get into the headlamp.
11. Remove the cover for the main-beam bulb.
12. Install two silica gel bags into the headlamp at
the positions shown in Figure 5.
Figure 5
13. Install the two bulb covers. Make sure that the covers are fully installed correctly.
Service Bulletin SB-17-0298
February 2009 Page 3 of 5
14. Install the headlamp access panel and turn the quarter turn fastener to attach it.
15. Lower the vehicle.
16. Adjust the steering to the straight forward position.
V8 and V12 Vantage Vehicles
1. Turn the steering to get access to the headlamp access panel for the correct headlamp.
2. Lift the vehicle and make it safe.
3. Release the quarter-turn fastener an d remove the headlamp access panel.
4. Remove the two screws (1) that attach the bulb
cover (2) to the headlamp (refer to Figure 6).
Figure 6
5. Remove the bulb cover from the headlamp.
6. Install a battery vent tube (1) into the headlamp in the position shown in Figure 7 and Figure 8.
Figure 7
Figure 8
Service Bulletin SB-17-0298
February 2009 Page 4 of 5
7. Attach an airline that has dry air, without oil to
the battery vent tube (refer to Figure 9)
CAUTION: MAKE SURE THAT THE
AIRLINE PRESSURE IS 2 BAR
OR LESS. IF YOU DO NOT,
DAMAGE TO THE HEADLAMP
CAN OCCUR.
Figure 9
8. Blow air through the headlamp until you can see no condensation on the lens.
9. Let the air flow for 20 minutes more.
10. Remove the vent tube from the headlamp then do steps 11 and 12 that follow quickly before more
moisture can get into the headlamp.
11. Install two silica gel bags into the headlamp
(refer to Figure 10 – right headlamp shown).
Figure 10
12. Install the bulb cover.
13. Install and tighten the two screws that attach the bulb cover.
14. Install the headlamp access panel and turn the quarter turn fastener to attach it.
15. Lower the vehicle.
16. Adjust the steering to the centre.
Part Data
Description Part Number Quantity
25g Silica Gel Bag (2 each pa ck) 9G43-37-11095-PK 2 per headlamp
Battery Vent Tube 1R12-372635-AA 1