Electronic Control Module Renew; Vacuum System Solenoid Renewal - Aston Martin DB7 Workshop Manual

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Air Conditioning Repair Procedures
Electronic Control M o d u l e / V a c u u m Solenoid Renewal
8.2.14.1 Electronic Control Module
Renew
8.3.01.1 Vacuum System Solenoid
Renewal
1. Disconnect the battery earth lead.
2. Remove the right hand underscuttle casing.
3. (On left hand cars) Removethe glove box assembly.
3. (On right hand cars) Remove the instrument pack
and surround trim.
4. Disconnect the earth w i r e and three block
connectors from the control module (Fig. 1 -2).
5. Remove the securing screws and module from the
air conditioning unit (Fig. 1-1).
Fitting a new module is the reversal of the removal
procedure.
The flaps in the cabin air distribution vents and the
water valve in the pipe line from the engine coolant
system to the heater matrix are all operated by
vacuumactuators.The vacuumfor these issupplied
by four solenoids mounted in a manifold pack
located behind the front left hand footwell outlet.
Failureof a solenoid w i l l require replacement of the
manifold pack.
Procedure
1. Disconnect the battery earth lead.
2. Remove the following:
• glove box and lid
• facia trim (walnut strip)
• radio and ashtray
• centre console switch assembly
• left hand underscuttle casing/knee bolster
Detai Is ofthe above operations can be found in the
trim and the electrical sections.
2. Remove thefixings joining the centre console to the
facia. This allows the front of the console to be
repositioned for access.
3. Disconnect the ducting from the left hand footwell
outlet.
4. Remove the two plastic fixings that secure the
slotted footwel I outlet and si ide the outlet out ofthe
unit.
7. Cut the tie strap holding the vacuum lines and
electrical harness to the underside of the air
conditioning unit.
8. Remove the screws that secure the manifold pack
to the underside of the air conditioning unit and
slide out the plate complete with the manifold
pack.
10. To fit a new manifold pack reverse the steps for the
removal.
May 1996
8-63