2006 x type saloon demist function does not work floor and other outlets o.k

Item Part Number Description 1 18A318 Vacuum Control Motor-, Panel/Defrost Door 2 18A478 Panel/Defrost Door (Full Vacuum Position) 3 - Defrost Air Flow 4 - Side Window Demister Air Flow 5 18B545 Temperature Blend Door (Full Heat Position) 6 19860 A/C Evaporator Core 7 19A813 Air Inlet Duct Door (Full Vacuum Position) 8 - Outside Air Inlet 9 18A318 Vacuum Control Motor-, Air Inlet Duct Door 10 - Recirculated Air Inlet 11 18527 Blower Motor 12 19A566 A/C Vacuum Reservoir Tank and Bracket 13 - Vacuum from the Engine Intake Manifold 14 19B888 A/C-Heater Function Selector Switch 15 - Vacuum to the 4x4 Hub Solenoids 16 18495 Water Diverter Valve (Full Vacuum Position) 17 18476 Heater Core 18 18A559 Floor/Panel Door (Full Vacuum Position) 19 - Floor Air Flow 20 18A318 Vacuum Control Motor-, Floor/Panel Door 21 - Panel Vent Air Flow

DESCRIPTION A manual temperature control (MTC) single zone type heating-A/C system or a manually controlled heater-only system is standard equipment on this model, depending on market.
To maintain the performance level of the heating, ventilation and air conditioning (HVAC) system, the engine cooling system must be properly maintained. The use of a bug screen is not recommended. Any obstructions in front of the radiator or A/C condenser will reduce the performance of the A/C and engine cooling systems.
The engine cooling system includes the radiator, thermostat, radiator hoses and the engine coolant pump. Refer to 7 - Cooling for more information before opening or attempting any service to the engine cooling system.

All vehicles are equipped with a common heater, ventilation and air conditioning (HVAC) housing (1). The heating-A/C system combines heating, ventilating and A/C (if equipped) capabilities in a single HVAC housing mounted within the passenger compartment beneath the instrument panel. The HVAC housing includes:

1. Mode-air doors (2)
2. A/C evaporator (A/C system only) (3)
3. Recirculation-air door and actuator (A/C system only) (4)
4. Blower motor (5)
5. Mode control cable (6)
6. Temperature control cable (7)
7. Heater core (8)
8. Blend-air door (9)

On heater-only systems, the A/C evaporator is omitted from the HVAC housing and is replaced with an air restrictor plate.
Based upon the system mode selected, conditioned air can exit the standard heater-only or optional heater-A/C housing through one or a combination of the three main housing outlets: defrost, panel or floor. The defrost and panel outlets are located on the top of the HVAC air distribution housing and the floor outlets are located on each side of the distribution housing. Once the conditioned air exits the HVAC housing, it is further directed through molded plastic ducts to the various outlets within the vehicle interior. These outlets and their locations are as follows:

1. Defroster Outlet- A single large defroster outlet is located in the center of the instrument panel top cover, near the base of the windshield.
2. Side Window Demister Outlets- There are two side window demister outlets, one is located at each outboard end of the instrument panel top cover, near the belt line at the A-pillars.
3. Panel Outlets- There are four panel outlets in the instrument panel, one located near each outboard end of the instrument panel facing the rear of the vehicle and two located near the top of the instrument panel center bezel.
4. Front Floor Outlets- There are two front floor outlets, one located on each side of the center tunnel near the dash panel.
5. Rear Floor Outlets- There are two rear floor outlets, one located on each side of the floor panel center tunnel near the front of each rear seat foot well.
6. REMOVAL
   WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.
   
   
   NOTE: Illustration shown with instrument panel removed for clarity. (Refer to 23 - Body/Instrument Panel/BEZEL, Instrument Panel - Removal).(Refer to 24 - Heating and Air Conditioning/Controls/CONTROL, A/C and Heater - Removal).(Refer to 23 - Body/Instrument Panel/COVER, Steering Column Opening - Removal). 5. Remove the screw (1) that secures the temperature control cable (2) to the left side of the HVAC air distribution housing (3). 6. Disconnect the temperature control cable from the blend door pivot lever (4) and remove the cable from the vehicle.
   REMOVAL
   
   WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury. (Refer to 24 - Heating and Air Conditioning/Controls/CONTROL, A/C and Heater - Removal).(Refer to 08 - Electrical/Clock - Removal).(Refer to 08 - Electrical/Power Windows/SWITCH, Power Window - Removal).(Refer to 24 - Heating and Air Conditioning/Distribution/OUTLET, Air - Removal).

Use a 12 volt test light and check for voltage at the heater grid on the glass, it may be an open circuit. The grid can be repaired with a factory grid repair kit ( special conductive paint).

check that the inlet defuser is moving to allow air into the blower.

The problem is the heater core leaking behind the dashboard. Heater Core Removal & Installation 1997-2002 To Remove:
NOTE: Heater core must be vacuum leak tested before it is remove from vehicle if a heater core leak is suspected.

1. Drain engine coolant.
2. Remove instrument panel.
3. For 5.4L (4V), if quipped, remove junction splash shield.
4. For 5.4L (4V), if quipped, disconnect starter relay cable.
   
   
5. For 5.4L (4V), if quipped, remove junction block bracket.
6. Clamp inlet and outlet heater hoses.
7. Disconnect heater hose from heater core by gently pressing it toward heater core.
8. Remove A/C plenum demister adapter.
9. Disconnect vacuum line.
10. Remove 13 plenum chamber top screws.
11. Remove blend door assembly from case.
12. Remove heater core.

To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.

1. Install heater core.
2. Install blend door assembly to case.
3. Install 13 plenum chamber top screws.
4. Connect vacuum line.
5. Install A/C plenum demister adapter.
6. Connect heater hose to heater core.
7. Release all clamps from inlet and outlet heater hoses.
8. For 5.4L (4V), if quipped, install junction block bracket.
9. For 5.4L (4V), if quipped, connect starter relay cable.
10. For 5.4L (4V), if quipped, install junction splash shield.
11. Install instrument panel.
12. Refill engine coolant.

Check operation of the control relay for the rear defogger.
Check all wiring/cable connections on the demister circuit for integrity.
(The demister draws a heavy current, which can cause fatigue/overheating of spade type connections).

Electrical problems are rife in these models. Try replacing the relevant relay box - a black box situated in the fuse box bay. This will hopefully solve your problem. Good luck!

may be just a cable adjustment.


SECTION 412-01: Air Distribution and Filtering 2001 Focus Workshop Manual DESCRIPTION AND OPERATION Air Distribution and Filtering The new heating and ventilation system ensures even air distribution.
The temperature control and air distribution flaps are controlled by two operating cables. All vehicles have a recirculated air function, with the flap controlled by a servo motor.
Air is supplied to the windscreen and side windows regardless of the air distribution setting.
The clean air filter is fitted as standard in most countries. This cleans the incoming fresh air of pollen and dirt particles. It must be renewed after every 40,000 km under normal operation conditions, or after 20,000 km under difficult conditions. If no clean air filter is installed, a plastic grille is fitted over the air intake. This can easily be replaced with a clean air filter.
Air distribution operating switch
Face level The main flow of air enters the passenger compartment at face level.
Face level/floor level The main flow of air enters the passenger compartment in equal parts at face level and floor level, and a small amount flows to the demister nozzles of the side windows.
Floor level The main flow of air enters the passenger compartment at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist/floor level The main flow of air enters the passenger compartment in equal parts at the windscreen and at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist The main flow of air enters the passenger compartment at the windscreen and a smaller amount flows to the demister nozzles of the side windows.
Air distribution operating switch Air distribution operating cables
NOTE: The Bowden cables for LHD and RHD vehicles are identical. However, they are fastened to the air flap operating mechanism with the respective reverse side of their connectors.
The air distribution switch operates with two Bowden cables. The cables operate the air distribution valves in the heater housing.
To remove and install the cables, the rotary switch must be turned as far as it will go to the left. The air flap mechanism engages easily in this position, making the installation of the cables easier.
--------------------------------
Air Distribution Cable Control Assembly Removal
CAUTION: Disconnect the battery ground cable. For additional information, refer to Section 414-01 .

1. Remove the radio/cassette unit and the CD player (if equipped). For additional information, refer to Section 415-01 .

1. Remove the bezel with heater/air conditioning controls.

1. Remove the bezel with heater/air conditioning controls (continued).
   • Pull off seven electrical connectors (six shown).

1. NOTE: To remove the Bowden cables, turn the rotary switches as far as they will go to the left.
   Remove the bezel with heater/air conditioning controls (continued).
   • Unclip the Bowden cables.

1. Remove the lower driver's side footwell trim.

1. Unclip and remove the air distribution Bowden cables.

1. Unclip and remove the temperature control Bowden cables.
   • Unclip and remove the temperature control Bowden cables.

Installation

1. NOTE: Route the new Bowden cables without kinks and check for easy accessibility.
   NOTE: To install the Bowden cables, turn the rotary switches as far as they will go to the left. The mechanism engages easily in this position.
   NOTE: The Bowden cables are identical for RHD and LHD vehicles, although they are fastened to the air flap operating mechanism with the reverse side of their connectors.
   Install the components in reverse order.

1. Check operation of the Bowden cables.
   

ONE OF THE HEATER DISTRIBUTION FLAP MOTORS FAULTY.UNSCREW GLOVEBOX AND YOU WILL SEE THE ONE THANS NOT WORKING(TURN ON BLOWERS TO TEST)

Do you have rear window tinting?( the plastic sheet type ) If so,check that the edges over the demister tapes have not curled up pulling the tapes off the window and diconnecting them. If they need repair, a small bottle of tape repair solution should be available from a spare parts retailer.
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