Ford Falcon. Manual - part 381

417-02-3 Interior 

Lighting 417-02-3

DIAGNOSIS AND TESTING

Visual Inspection Chart

Interior Lighting

Normal Condition

Possible cause of

Principles of Operation

abnormality

The interior lamps are supplied positive power from

Fuse Not blown

Extra accessories added

the BEMs battery saver circuit. This positive supply

drawing more current.

turns off 15 minutes after the ignition is turned off or

Wiring short circuit

door/ lamp activity ceases. Operating the Audio with

Faulty switch (if

ignition off also activates the battery saver power

applicable)

supply to energise the on glass antenna amplifier.

Globe filament in tact

Bulb life exceeded

Pressing the remote entry unlock button or courtesy

Vibration damage

lamp switch, opening the boot, wagon liftgate or any

of the doors will also activate the battery saver power

Switch turns circuit on

Physical damage or heat

supply.

and off

damage

Ensure air can circulate

The negative side of the courtesy lamps are also

around lamp

supplied from the BEM - refer to circuit diagrams for

details. These can be switched by the BEM using the

Lens, housing etc are not Physical damage or heat

WDS tool.

damaged

damage

Ensure air can circulate

Reading lamps and glove box lamps are switched to

around lamp

regular ground through their respective switches. For

sedan, the luggage compartment lamp is switched to

ground through the decklid latch ajar switch.

Symptom Chart

Symptom Chart

Condition

Source

Action

  Courtesy Lamp button on ICC not

Blown Globe

  Check globe

working

  Press courtesy lamp switch for five

Function disabled

second to reactivate function - see
owners manual

  Diagnose button functionality - refer

Internal ICC Fault

ICC diagnostics Section 413-08

  Check BEM switches lamp on and off -

BEM Fault

refer BEM diagnostics Section 419-10

  Check for damage to terminal and

Damaged Lamp Unit

connections

Damaged Wiring

  Check continuity of wiring to BEM

  Courtesy Lamps not turning on when

Blown Globe

  Check globe

doors opened

  Press courtesy lamp switch for five

Function disabled

second to reactivate function - see
owners manual

  Diagnose button functionality - refer

Internal ICC Fault

ICC diagnostics Section 413-08

  Check BEM door inputs and that it

BEM Fault

switches lamp on and off - refer BEM
diagnostics Section 419-10

  Check for damage to terminal and

Damaged Lamp Unit

connections

  Check continuity of wiring from lamp to

Damaged Wiring

BEM

  Reading lamps not working

Blown Globe

  Check globe

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417-02-4 Interior 

Lighting 417-02-4

DIAGNOSIS AND TESTING (Continued)

Condition

Source

Action

  Check BEM door inputs and that it

BEM Fault

switches lamp on and off - refer BEM
diagnostics Section 419-10

  Check for damage to terminal and

Damaged Lamp Unit

connections

Damaged Wiring

  Check continuity of wiring to BEM

  Glove Box lamp not working

Blown Globe

  Check globe

  Check BEM door inputs and that it

BEM Fault

switches lamp on and off - refer BEM
diagnostics Section 419-10

  Check for damage to terminal and

Damaged Lamp Unit

connections

Damaged Wiring

  Check continuity of wiring to BEM

  Luggage Compartment Lamp not

Blown Globe

  Check globe

working

  Check BEM door inputs and that it

BEM Fault

switches lamp on and off - refer BEM
diagnostics Section 419-10

  Check for damage to terminal and

Damaged Lamp Unit

connections

Damaged Wiring

  Check continuity of wiring to BEM

Pinpoint Tests

PINPOINT TEST A : LUGGAGE COMPARTMENT LAMP

Test Step

Result / Action to Take

A1

INIT

IAL CHECK

Open Boot.

Yes

Functioning correctly

Does the Luggage compartment lamp illuminate?

No

Continue

A2

FILAMENT CONDITION

Remove globe and check filament (use multi-meter if necessary).

Yes

Continue

Is the filament OK ?

No

Change globe and recheck

A3

WDS CHECK

Use WDS and turn lamps on (See BEM diagnostics for switch input

Yes

status).

Continue

Does the lamp turn on?

No

Go to A6

A4

WDS CHEC

K Cont.

Check latch switch using WDS (See BEM diagnostics for switch input

Yes

status).

Functioning correctly.

Is switch functioning OK?

No

Continue

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417-02-5 Interior 

Lighting 417-02-5

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

A5

WIRING CONDITION

Disconnect wiring from boot latch and check switch function with

Yes

multi-meter by latching and unlatching the unit.

Check wiring to boot latch switch.
Refer wiring circuits and diagnostics.

Refer wiring schematic for connection detail.

No

Is switch OK ?

Replace latch

A6

CIRCUIT INTEGRITY

Check integrity of wiring (including fuse and globe) from BEM to lamp.

Yes

Refer BEM diagnostics.

Are fuse, wiring and globe OK ?

No

Replace fuse, globe or wiring as required and
recheck system.

PINPOINT TEST B : GLOVE BOX / READING LAMP

Test Step

Result / Action to Take

B1

VISUAL CHECK

Open Glove Box / switch on reading lamp.

Yes

Functioning correctly

Does the Glove Box / reading lamp illuminate?

No

Continue

B2

FILAMENT CONDITION

Remove globe and check filament (use multi-meter if necessary).

Yes

Continue

Is the filament OK ?

No

Change globe and recheck.

B3

WIRING CONDITION

Disconnect wiring from glove box / reading switch and check switch

Yes

function with multi-meter. Refer wiring schematic for connection detail. Check wiring to switch / globe.

Refer wiring circuits and diagnostics.

Is switch OK ?

No

Replace switch.

PINPOINT TEST C : COURTESY LAMPS

Test Step

Result / Action to Take

C1

ICC CONTROLLED FUNCTIONALITY

Refer to ICC section of owners manual (a five second press of the

Yes

courtesy lamp switch will toggle modes)

Continue

Is the courtesy lamp function controlled by the Interior

No

Command Centre enabled?

Enable function by pressing the courtesy lamp
switch on ICC for longer than five seconds.
Recheck operation

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417-02-6 Interior 

Lighting 417-02-6

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

C2

VISUAL CHECK

Open Doors.

Yes

Functioning correctly.

Do the courtesy lamps illuminate?

No

Continue - to check lamps that do not illuminate.

C3

WDS SELF – TEST

Use WDS and turn courtesy lamps on (See Body Electronics Module

Yes

diagnostics).

Continue

Do the lamps turn on?

No

Go to C5

C4

WDS SELF – TEST Cont.

Check door switch using WDS (See BEM diagnostics for switch input

Yes

status).

System is operating - recheck system

Is switch functioning OK?

No

Continue with BEM diagnostics to check door
inputs to BEM

C5

CIRCUIT INTEGRITY

Check integrity of wiring (including fuse and globe) from BEM to lamp.

Yes

Refer BEM diagnostics.

Are fuse, wiring and globe OK?

No

Replace fuse, globe or wiring as required and
recheck system.

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