Ford Falcon. Manual — part 301

412-02-8

Heating and Ventilation

412-02-8

DESCRIPTION AND OPERATION (Continued)

finer pollen filter is also available, as an accessory

Fresh/Recirculated air selector

item, from your Ford dealer.

Fresh or recirculated air is controlled by pressing the

NOTE: Extended operation of the climate control

recirculated mode button. Pressing the button will

system in a recirculated air mode may lead to a

alternate between fresh and recirculated air modes. A reduction in air quality in the cabin. The air in the

graphic indicating the selected mode will appear on

cabin should be periodically refreshed by selecting

the display.

fresh air settings.

In normal circumstances, the fresh air mode should

To clean the standard mesh filter, blow through mesh

be selected to maintain the quality of air inside the

with compressed air and wash with luke warm water.

vehicle and to prevent the build-up of stale air or

For the optional pollen filter (where fitted), the filter

odours, and to reduce windscreen misting.

cannot be washed. When serviced, the pollen filter

To prevent the ingress of dust, odours or fumes,

should be replaced. If the filter is blown through with

select the recirculated air mode. The recirculated air

compressed air, rather than replaced, the air quality

mode can also be used to allow the air conditioner to

and airflow quantity may be degraded.

more effectively cool the vehicle’s cabin. Do not use

the recirculated air mode if vehicle occupants are

HVAC Ducting

smoking as tobacco odours may remain.

The fresh air intake to the HVAC unit enters the

plenum chamber through the cowl grilles underneath

the windscreen wipers. The recirculated air intake to

the HVAC unit is inside the cabin behind the glove

box and directly below the LH plenum chamber. The

HVAC fresh air entry is attached to the plenum

chamber with a foam seal. Outlet air from the HVAC

unit can exit into the instrument panel duct, to the

floor vent outlets or to the floor console duct. The

HVAC unit is attached to the floor console duct with a

foam seal.
Between the HVAC unit and the firewall at the

locations where the heater and evaporator tubes pass

through, foam pads are fitted around the tubes to seal

the firewall openings.

Air Filtering

The air selector system is fitted with a fine mesh

particle filter to exclude leaf debris, dust and dirt. A

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412-02-9

Heating and Ventilation

412-02-9

DESCRIPTION AND OPERATION (Continued)

HVAC Air Distribution Outlets

HIM

HVAC Integrated Module

Item

Description

HTR

Heater

1

Fresh air intake

HVAC

Heating, Ventilation & Air Conditioning

2

HVAC air outlet to front screen demist

ICC

Interior Command Centre

3

HVAC air outlets to face vents

MAX

Maximum

4

Floor and console ducts

MCC

Manual Climate Control

5

Recirculated air intake

MIN

Minimum

The instrument panel duct directs outlet air to the

demist/screen, face centre and face side LH/RH vent

MSG

Message

outlet registers. The instrument panel duct is an

N/A

Not Applicable

integral part of the instrument panel and is not a

PID

Parameter Identifier

separately serviceable item. If the duct is faulty, the

RPM

Revolutions Per Minute

complete instrument panel must be replaced.

EATC

Electronic Air Temperature Control

The floor console duct is removed from the vehicle as

part of the floor console assembly. The duct can then

EEC

Electronic Engine Control

be separated from the console. Refer to Removal &

PCM

Powertrain Control Module

Installation procedure later in this section.

BEM

Body Electronics Module

Acronyms and Abbreviations

ACPT

Air Conditioning Pressure Transducer

SZ

Single Zone

The following acronyms will be used throughout this

section.

DZ

Dual Zone

A/C

Air Conditioning

ACC

Automatic Climate Control

CAN

Controller Area Network

DTC

Diagnostic Trouble Code

ECU

Electronic Control Unit

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412-02-10 Heating

and

Ventilation 412-02-10

DIAGNOSIS AND TESTING

Heating and Ventilation

Inspection and Verification

Check these items before entering Diagnostics.

Topic

Specification

Vehicle Battery Voltage

Greater than 12 Volts

Engine to be running

In all Tests

Record all DTC’S present

Before Clearing

Ensure that a false DTC has not been set because of Customer may have to be questioned on the vehicle

prior work on the vehicle.

history if a DTC root cause component cannot be

Example: If the LHF door (ACC vehicle) was

found.

removed at a body shop, Ambient temperature

sensor DTC will be set.
When referring to a Temperature / Resistance table.

Place an accurate electronic Thermometer near to

the Sensor in question.

When using pressure gauges

Ensure that they are correctly calibrated and that the

needles rest on Zero with no Refrigerant in the lines

and the gauge valves open.

Vacuum pump must pull down to -100 kPa (30 in/hg) Change the Vacuum pump oil approximately every

15 evacuations, to improve pull down time.

Symptom Chart

Condition

Source

Action

No airflow in selected mode

ICC

Go to Section 413-08.

Evaporator Core Ice-Up

Go to Section 412-03, Pinpoint test D.

Intake Air Filter Restriction

Go to PinPoint Test I.

Mode (HIM)

Go to PinPoint Test D, E, F, G, H, J.

Refer to Section 412-04, Go to

Low Battery Charge

PinPoint Test H.

Refer to Section 412-04, Go to

CAN Message Failure

PinPoint Test M.

Plenum Area Restriction

Go to PinPoint Test A.

Blower Motor

Go to section 412-04, Pinpoint test L.

Insufficient airflow in selected mode

Plenum Area Restriction

Go to PinPoint Test A.

Instrument panel/console duct

Go to PinPoint Test B.

restriction

Mode (HIM)

Go to PinPoint Test D, E, F, G, H, J.

Evaporator Core Ice-Up

Go to section 412-03, Pinpoint test D.

Intake Air Filter Restriction

Go to PinPoint Test I.

Low Blower Voltage

Go to section 412-04, Pinpoint test H.

Fresh / Recirc Door Jammed

Go to PinPoint Test D.

Sun Load Sensor

Refer to section 417-01.

Airflow direction incorrect

Mode (HIM)

Go to PinPoint Test D, E, F, G, H, J.

Linkage Disconnect

Go to PinPoint Test D, E, F, G, H, J.

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412-02-11 Heating

and

Ventilation 412-02-11

DIAGNOSIS AND TESTING (Continued)

Condition

Source

Action

ICC

Go to Section 413-08.

Blower motor not operating on

Refer to Section 412-04, Go to

Can Message

selected speed

PinPoint Test M.

Refer to Section 412-04, Go to

Blower Input Function

PinPoint Test L.

A/C not cold

ICC

Refer to Section 413-08.

Driver side Actuator Motor

Go to PinPoint Test H.

Passenger side Actuator Motor

Go to PinPoint Test G.

Low Refrigerant Charge

Refer to Section 412-03.

Refer to Section 412-03, Go to

A/C Compressor Not Engaging

PinPoint Test A & B.

Refer to Section 412-04, Go to

Evaporator Temperature Sensor

PinPoint Test B.

Evaporator Core Ice-Up

Go to section 412-03, Pinpoint test D.

Mode (HIM)

Go to PinPoint Test D, E, F, G, H, J.

Refer to Section 412-04, Go to

Ambient Air Sensor

PinPoint Test A.

Refer to Section 412-04, Go to

Cabin Temperature Sensor

PinPoint Test P.

Refer to Section 412-04, Go to

Blower Motor

PinPoint Test L.

Passenger side temperature Hotter

Go to PinPoint Test K.

than Drivers side

Sun Load Sensor

Refer to section 417-01.

Heating ineffective

Passenger side Actuator Motor

Go to PinPoint Test G

Driver side Actuator Motor

Go to PinPoint Test H.

Heater Core Issue/Engine cooling

Go to PinPoint Test C.

issue

Mode (HIM)

Go to PinPoint Test D, E, F, G, H, J.

Refer to Section 412-04, Go to

Ambient Air Sensor

PinPoint Test A.

Refer to Section 412-04, Go to

Cabin Temperature Sensor

PinPoint Test P

ICC

Refer to Section 413-08.

Leaking Heater Core

Go to PinPoint Test C.

Blocked Heater Core/Engine Cooling

Go To section 303-03.

system

Smell from HVAC through vents

Leaking Evaporator Core

Go to section 412-03, Pinpoint test E.

Evaporator Core Ice-Up

Go to section 412-03, Pinpoint test D.

Intake Air Filter Contaminated

Go to PinPoint Test I.

Mode (HIM)

Go to PinPoint Test D, E, F, G, H, J.

Visual inspection to verify if the HVAC

Vehicle Carpet Wet

drain hose is blocked or misaligned
with the hole in Transmission tunnel.

Noise

Blower Motor

Go to section 412-04, Pinpoint test L.

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