Heating and A/C Components In Passenger Compartment, Servicing
Heating And A/C Components In Passenger Compartment, Servicing
CAUTION!
- Before working on the electrical system, obtain radio security code and disconnect battery Ground (GND) strap.
- When disconnecting battery, always check operation of vehicle equipment such as radio, clock, and power windows.
NOTE: System components identified with an * must only be serviced or replaced after discharging refrigerant system. Use Kent Moore ACR4 or equivalent.
1 - Clip
- Lift out with screwdriver.
2 - Dust and pollen filter
3 - Air intake housing
4 - Defroster air outlet
- Removing and installing
5 - Side window air outlet
- Removing See Fig. 3
6 - Heating and A/C controls
With:
- A/C switch - E35-
- Fresh air blower switch -E9-
- Switch for fresh air blower and recirculated air -E184-
7 - Air outlets
- Center and side air outlets, removing (early prod.) See Fig.4
- Center air outlet, removing (later prod.) removing See Fig. 5
- Side air outlets, removing (later prod.) See Fig.6
8 - Instrument panel cross member
- Always follow installation instructions for bolt See Fig. 9
9 - Defroster duct
- Replacing:
- Remove instrument panel
10 Servo motor for fresh/recirculating air door -V154-
11 - Ambient temperature switch -F38-
- Switches off A/C clutch -N25- at low ambient temperatures
- Switching point: 5 °C (41.5 °F)
- Replacing:
- Remove passenger side shelf (glove box)
- Reach behind heater/evaporator unit from below and pull out switch.
12 - Gasket
- Replace if damaged
- Replacing:
- Remove ambient temperature switch -F38-
- Remove dust and pollen filter
- Set fresh air/recirculation flap in "fresh air" position
- Reach down into air intake housing and pull out gasket
CAUTION!
Area around dust and pollen filter and air intake housing must be free from debris, leaves etc. before reaching into housing. Debris entering heater/evaporator unit will block evaporator water drain and cause subsequent (water) damage.
NOTE:
If unable to access and remove gasket as described, proceed as follows:
- Remove instrument panel
- Loosen cross member -10-.
- Always follow installation instructions for bolt
13 - Evaporator water drain guide
14 - Heater/evaporator unit*
Contains:
- Heater core
- Evaporator
15 - Fresh air blower -V2-
- Removing and installing See Fig. 8
16 - Fresh air blower series resistance with fuse -N24-
- Replacing See Fig. 7
17 - Center air outlet duct
18 - Control panel trim
- Unclip using screwdriver
19 - Center trim
20 - Heating and A/C cables
21 - Heater core*
- Always use new coolant after replacement
22 - Left rear duct
23 - Lower duct
24 - Upper duct
25 - Footwell air outlet
26 - Instrument panel cross member and left side member securing bolt
- Always follow installation instruction for bolt See Fig.9
27 - Relay Coolant Fan Control (FC) Relay -J26-
- Control number 214
First Speed Coolant Fan Control (FC) relay -J279-
- Vehicles up to 10.00: Control number 214
- Vehicles from 10.00: Control number 373
Second Speed Coolant Fan Control (FC) Relay -J280-
- Vehicles up to 10.00: Control number 213
- Vehicles from 10.00: Control number 370
Component locations.
28 - A/C cut-off control module -J314-
- Control number 384
Component location.
Fig. 3 Side window air outlet, removing
- Carefully pull out using needle-nose pliers.
Fig. 4 Center and side air outlets, removing (early prod.)
- With flashlight, locate the two retaining tabs inside housing, lift tabs with two small screwdrivers and carefully pull outlet from instrument panel.
Fig. 5 Center air outlet, removing (later production)
- Insert fingers of both hands into lower row of grille -A- and push center vent -1- down suing force until locking lugs -B- are released from their mounts.
NOTE:
- Sit between front seats to apply the force required.
- If outer locking lugs -B- will not release, grip at this point and push center vent down while simultaneously pulling out slightly.
- Grip center vent -1- at point-C-which has been raised up slightly from instrument panel opening by action of pushing down.
- Push center vent in direction -D- to release locking lugs and pull it outward slightly.
- Disconnect electrical connectors -2- from center vent before removing in direction of - arrow-.
Fig. 6 Side air outlet, removing (later prod.)
NOTE: Removal of both sides is identical.
- Unclip and remove instrument panel side cover -1- using screwdriver.
- Guide a flat screwdriver between vent and seal alternately into side openings -A- and - B-.
- Pry vent -2- in direction -C- alternately through these openings.
- Disconnect electrical connector -3- when removing vent -2- in direction -C-.
Fig. 7 Fresh air blower series resistance with fuse -N24-, replacing
- Remove passenger side shelf (glove box).
- Disconnect electrical connector and remove bolt -arrow-.
- Seal surface between series resistance -1- and air duct before installing with AMV 176 000 05 (or equivalent).
Fig. 8 Fresh air blower -V2-, removing and installing
- Remove passenger side shelf (glove box)
- Disconnect electrical connector -1-.
- Remove three screws -arrows- and remove fresh air blower -2- downwards.
Fig. 9 Instrument panel cross member and left side member securing bolt, installation note:
To avoid damage to instrument panel wiring harness -2-, ensure that the protective cap -1- is installed on the securing bolt for upper instrument panel cross member -4- at left side member -3-.