Heating and Ventilation System, Servicing
Heating And Ventilation System, Servicing
CAUTION!
Before working on the electrical system, obtain radio security code and disconnect battery Ground (GND) strap
1 - Air intake grill
2 - Air intake duct, front (under hood)
- Removing and installing See Fig. 1
3 - Seal
4 - Air intake duct, rear (on bulkhead)
- Removing and installing See Fig. 1
5 - Right air duct
- Removing, first remove glove box
6 - Instrument panel
7 - Right air outlet
8 - Fresh air blower switch -E9-
9 - Heater / fresh air control plate
- Removing and installing (vehicles without A/C) See Fig. 3
10 - Defroster duct
- To remove, first remove heater box/evaporator housing
11 - Center air duct
- To remove, first remove heater box/evaporator housing
12 - Center air outlet adaptor
Removing:
- Remove radio
- Remove center air outlet
13 - Center air outlet
- Removing See Fig. 4
14 - Fresh air blower -V2-
- Removing See Fig. 5
15 - Fresh air blower series resistance with fuse -N24-
- Removing, first remove glove box
- Removing See Fig. 5
16 Heater/evaporator - housing
- Removing See Fig. 8
- Installing evaporator water drain valve
17 - Cover
18 - Footwell air outlet console
- Removing See Fig. 6
19 - Heater/fresh air control assembly
- Removing and installing See Fig. 3
20 - Cables
21 - Left air outlet
- Removing See Fig. 2
22 - Left air duct
Removing:
- Remove fuse/relay panel cover
- Remove footwell air outlet cover and console
- Separate and remove air duct
23 - Defroster outlet
- Carefully pry out with screwdriver
24 - Heater control valve
- Removing See Fig. 7
25 - Heater (coolant) hoses
26 - Clip
Fig. 1 Air intake ducts, front and rear, removing and installing
1 - Air intake duct, front (under hood)
2 - Seal
3 - Air intake duct, rear (on bulkhead)
Removing
- Remove screws -arrows- and remove rear duct
- Remove screws from hood and remove front duct
- Install in reverse order of removal
Fig. 2 Air outlet, removing
- Using a screwdriver, carefully pry out pivoting vent -2-
- Remove screw from center of outlet
- Remove air outlet -1-
Fig. 3 Heater/fresh air control plate and control assembly, removing and installing (vehicles without A/C)
Removing
- Remove levers -4-
- Remove control plate -3-
- Remove screws from instrument panel -2-
- Push control assembly -1- (cables attached) forward and down to bottom of instrument panel
- Remove control cables and remove heater/fresh air control
Installing
- Attach cables to heater/fresh air control assembly
- Install in reverse order of removal
Fig. 4 Center air outlet, removing
- Using a screwdriver, carefully pry out pivoting vents -2-
- Remove screws from center of each vent opening
- Remove center air outlet -1-
Fig. 5 Fresh air blower series resistor with fuse -N24- and fresh air blower -V2-, removing
CAUTION!
Before working on the electrical system, obtain radio security code and disconnect battery Ground (GND) strap.
Removing series resistor -1-
- Remove harness connector from series resistor
- Remove screw -2- and remove series resistor
Removing fresh air blower -3- (with heater box removed)
- Disengage retaining tab -4- and turn fresh air blower in direction of -arrow-
- Removing fresh air blower -3- (with instrument panel and heater box installed)
- Remove glove box
- Remove harness connector from series resistor
- Remove right air duct
- Disengage retaining tab -4-, turn fresh air blower in direction of -arrow- and remove from housing
- Move fresh air blower to center of instrument panel and remove
Fig. 6 Footwell air outlet console, removing
- Remove cover -1-
- Detach and remove footwell air outlet console -2-
Fig. 7 Heater control valve (vehicles without A/C), removing
- Remove clip -1- and remove cable end -2- from lever
- Clamp coolant hoses near valve
- Remove spring clamps from coolant hoses and remove coolant hoses from valve
- Remove valve
NOTE:
- Release coolant system pressure and drain coolant before beginning repair.
- Refill with coolant after installing/replacing control valve.
Fig. 8 Heater box/evaporator housing, removing
NOTE:
For illustration purposes, heater box/evaporator housing is shown with the instrument panel removed.
1 - Heater box/evaporator housing
2 - Rubber grommet
3 - Screws
NOTE: Plug heater core outlets to prevent coolant spills in the passenger compartment during heater box/evaporator housing removal.
Removing
- Remove glove box
- Remove right air duct
- Remove air intake duct, rear (on bulkhead)
- Remove center air outlet and center air duct (if equipped)
- Loosen and remove heater/fresh air control cables from housing
- Remove harness connector from fresh air blower series resistor
- Remove footwell air outlet console and cover
- Remove coolant hoses from heater core and plug connections
- Loosen and remove cable at heater control valve
- Remove screws -3-
NOTE: The lower screw is located on the bulkhead beneath the engine compartment trim.
- Remove heater box/evaporator housing -1-