Ford Falcon. Manual — part 302

412-02-12 Heating

and

Ventilation 412-02-12

DIAGNOSIS AND TESTING (Continued)

Condition

Source

Action

Orifice Tube

Refer to Section 412-03.

Low Refrigerant Charge

Refer to Section 412-03.

Heater Core "Gurgle" Sound/Engine

Refer to section 303-03.

Cooling system bleed issue

Ambient temperature display

ICC

Display

Go to section 412-04 Pinpoint test A.

inaccurate

Display character fault

Refer to section 413-08.

Display illumination fault

Refer to section 413-08.

Acronym

Description

HIM Configuration

PID Chart

ACC MCC HTR

The following table lists all PID’s utilised by the WDS

RIGHTOT

Driver’s Display

YES

N/A

N/A

service tool to access specific functions within the

Set Temperature

HIM.

MC_VREF

Vehicle Battery

YES YES YES

Acronym

Description

HIM Configuration

Voltage

ACC MCC HTR

HIM_STAT ECU Diagnostic

YES YES YES

CCNT

Number of

YES YES YES

Operating State

Continuous Trouble

CONPROV Configuration and

YES YES YES

Codes Set

Programming

NTCSDT

Number of Trouble YES YES YES

Version

Codes Set due to

CANDSV

CAN Diagnostic

YES YES YES

Diagnostic Test

Specification

A_CT

Evaporator

YES YES

N/A

Version

Temperature

RECIRDS

Recirculation Door

YES YES YES

ETSFD

External

YES

N/A

N/A

Actual Position

Temperature

RECIRDTP Recirculation Door

YES YES YES

Sensor Filtered

Target Position

Data

CCACTM

Climate Control

YES YES YES

EXT_TEMP External

YES

N/A

N/A

Actuator Modes

Temperature From

MOD_ID

Module

YES YES YES

Sensor (unfiltered)

Configuration

PBDAP

Passenger Blend

YES YES YES

Check

Door Actual

CCMODE

Climate Control

N/A

YES

N/A

Position

Mode

PBDTP

Passenger Blend

YES YES YES

BEM_MSG GEM - Body

YES YES YES

Door Target

Electronics Module

Position

CAN Message

BLENDDR

Driver Blend Door

YES

N/A

N/A

Receive Status

Position

CDU_MSG ACM - Interior

YES YES YES

BLENTP

Driver Blend Door

YES

N/A

N/A

Control Center

Target Position

Module CAN

BLOWVOL HVAC Blower

YES YES YES

Message Receive

Voltage

Status

BLOWAP

Blower Motor

YES YES YES

PCM_MSG PCM - Powertrain

YES YES YES

Speed - Actual

Control Module

Position

CAN Message

BLOWTP

Blower Motor

YES YES YES

Receive Status

Speed - Target

ACCS

AC Compressor

YES YES

N/A

Position

Cycling Request

LEFTOT

Passenger’s

YES

N/A

N/A

CAL_VER

EEprom Calibration YES YES YES

Display Set

Version

Temperature

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412-02-13 Heating

and

Ventilation 412-02-13

DIAGNOSIS AND TESTING (Continued)

Acronym

Description

HIM Configuration
ACC MCC HTR

CAL_VRAM Calibration Version YES YES YES

Currently Loaded

in RAM.

DTC Chart

Refer to DTC chart in Section 412-04.

Pinpoint Tests

PINPOINT TEST A : PLENUM CHAMBER AIR RESTRICTION (ACC / MCC / HTR)

CAUTION: Take all the standard safety procedures when dealing with A/C system refrigerant,

including Eye protection and Gloves.
NOTE: REFER to SECTION 412-02 SYMPTOM CHART BEFORE PROCEEDING

Test Step

Result / Action to Take

A1

VISUAL INSPECTION - ABOVE COWL GRILLES

Inspect the cowl panel grilles (LH and RH) below the windscreen

Yes

wiper arms for evidence of airflow obstruction.

Remove the airflow obstruction, and blow out
any debris using compressed air.

Was there debris, dust or insects on the top of the cowl grille
obstructing intake air to the cabin?

No

Go to A2

A2

VISUAL INSPECTION - BELOW COWL GRILLES

Remove the cowl panel grilles (LH and RH). Refer to section 501-02.

Yes

Remove the airflow obstruction, and blow out

Inspect the plenum inlet chamber below the cowl grilles for evidence

any debris using compressed air.

of airflow obstruction.

No

Was there debris, dust or insects in the plenum inlet chamber

Plenum chamber air intake was not restricted.

obstructing intake air to the cabin?

PINPOINT TEST B : INSTRUMENT PANEL/ CONSOLE DUCT RESTRICTION (ACC/MC/HTR)

CAUTION: Take all the standard safety procedures when dealing with A/C system refrigerant,

including Eye protection and Gloves. Refer to Section 412-03 for the complete Safety Precautions.
NOTE: The instrument panel duct (incorporating demist/screen, face centre and face side ducts) is an

integral part of the instrument panel, and is not a separately serviceable item. If the duct is faulty, the

complete instrument panel must be replaced (Refer to section 501-12).

NOTE: REFER to SECTION 412-02 SYMPTOM CHART BEFORE PROCEEDING

Test Step

Result / Action to Take

B1

VISUAL INSPECTION - VENT OUTLETS

Inspect the demist vent outlets for evidence of airflow obstruction,

Yes

including a dash mat or other item which may cover the vent outlet.

Remove the airflow obstruction.

Is there evidence of airflow obstruction at any demist vent

No

outlets?

Go to B2

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412-02-14 Heating

and

Ventilation 412-02-14

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

B2

Airflow TEST - VENT OUTLETS

Run the engine and switch on the ACC with blower fan operating at

Yes

maximum speed.

Instrument panel duct is not restricted.

Whilst selecting the air outlet modes using the ICC button, check for

No

air delivery at all vent outlets (demist/screen, face front, face side

Go to E & F

LH/RH, floor LH/RH and rear console).

Is airflow supplied to each vent outlet?

PINPOINT TEST C : HEATER CORE LEAKING CAUSING “SMELL” (ACC / MCC / HTR)

CAUTION: If the Heater Core is to be removed, ensure that the Heater core tubes are "capped" to

avoid any Coolant spillage onto the vehicle interior.
NOTE: NOTE: REFER to SECTION 412-02 SYMPTOM CHART BEFORE PROCEEDING

Test Step

Result / Action to Take

C1

COOLING SYSTEM PRESSURE

Conduct engine cooling system pressure test. Refer to section 303-03

Yes

for test procedure.

No Cooling system leakage evident.

Does the cooling system hold pressure?

No

Go to C2

C2

VISUAL INSPECTION

Start Engine, select Full heat and Highest Blower Fan speed at the

Yes

ICC.

Replace the Heater core. Refer to removal and
installation instructions in this section.

Run Engine for a minimum of 10 Minutes.

No

From under the vehicle inspect the A/C drain tube for evidence

The Heater core is not the cause of the Coolant

of Engine coolant. Is there evidence at the drain tube of Coolant?

leakage or Smell.

PINPOINT TEST D : ACTUATOR — RECIRCULATE DOOR (ACC / MCC / HTR)

CAUTION: If carrying out a "feel" test for door movement, care should be taken to avoid injury to

your Hand from moving parts such as blower motor, levers, etc.
NOTE: NOTE: REFER to SECTION 412-02 SYMPTOM CHART BEFORE PROCEEDING

Test Step

Result / Action to Take

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412-02-15 Heating

and

Ventilation 412-02-15

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

D1

VISUAL INSPECTION - RECIRC DOOR LEVER TO HIM

CAM

Remove the Glove Box. Refer to Section 501-12.

Yes

Go to D2

Remove Air Intake Filter.

No

Carry out a visual inspection to see if the Recirc door cam is

Using a flat blade screwdriver, gently move /

connected to the HIM BLACK lever pin,

prise the HIM lever pin into the recirc door cam.

Is the lever connected?

D2

VISUAL INSPECTION - RECIRC DOOR OPERATION

Check for full door movement to Fresh and Recirc while pushing the

Yes

ICC Button with visual inspection or by inserting your hand through

System OK

the Air Intake Filter opening.

Clear DTC
Perform HVAC On - Demand Self Test refer to

Is the Fresh / Recirc Door moving fully from fresh to recirc?

section 412-04

No

Go to section 412-04 Pinpoint test C.

PINPOINT TEST E : ACTUATOR SCREEN/FACE DOOR (ACC / MCC / HTR)

CAUTION: If carrying out a "feel" test for door movement, care should be taken to avoid injury to

your Hand from moving parts such as blower motor, levers, etc.
NOTE: NOTE: REFER to SECTION 412-02 SYMPTOM CHART BEFORE PROCEEDING

Test Step

Result / Action to Take

E1

VISUAL INSPECTION - SCREEN / FACE DOOR

OPERATION

Check for full door movement to Screen and Face while pushing the

Yes

ICC Button. Check for air delivery from Face and Screen modes

System OK

alternatively with blower operating at full speed.

Clear DTC
Perform HVAC On-Demand Self Test. Refer to

Are the Screen and Face modes selectable?

Section 412-04.

No

Go to E2

E2

VISUAL INSPECTION - HIM LEVER TO HVAC CAM

Remove the Glove Box. Refer to Section 501-12.

Yes

Go to Section 412-04 , Section D.

Using a mirror and a torch view the lever area between the HIM and
the HVAC to see if the HIM BLUE and GREEN lever pins are slotted

No

into the HVAC lever cams.

Remove the instrument panel. Refer to Section
501-12.

Were the HIM lever pins slotted into the HVAC lever cams?

Remove and Install the HIM ensuring that HIM
levers and HVAC cams are connected. Refer to
removal and installation instructions in this
section.

PINPOINT TEST F : ACTUATOR — FLOOR/CONSOLE (ACC / MCC / HTR)

CAUTION: If carrying out a "feel" test for door movement, care should be taken to avoid injury to

your Hand from moving parts such as blower motor, levers, etc.
NOTE: REFER to SECTION 412-02 SYMPTOM CHART BEFORE PROCEEDING

Test Step

Result / Action to Take

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