Ford Falcon. Manual — part 399

419-10-24

Body Electronics Module (BEM)

419-10-24

DIAGNOSIS AND TESTING (Continued)

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

J6/12

(WHT)

Accesory

J6/13

(RD/BL)

Start circuit

J6/14

NC

J6/15

(BLK)

Pedal circuit ground

J6/16

(LT BL/BLK)

Pedal circuit Motor +

TILA 8 pin connector

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

J7/1

(YLW)

Pedal Circuit battery +

J7/3

(BLK)

Pedal circuit ground

J7/6

(LT BL/BLK)

Pedal circuit motor +

J7/8

(LT BL/ORG)

Pedal circuit motor -

Pinpoint Tests

PINPOINT TEST A : COURTESY LAMP DRIVER TEST

Test Step

Result / Action to Take

A1

Yes

Using WDS operate courtesy lamp drivers and monitor pin J3/12.

Return to sympton chart for next steps

Is pin low when drivers activated and high otherwise?

No

Go to A2

A2

Yes

Check wiring to pin J3/12. Is wiring OK?

Replace BEM

No

Fix wiring

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Body Electronics Module (BEM)

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DIAGNOSIS AND TESTING (Continued)

PINPOINT TEST B : HEATED BACKLIGHT TEST

Test Step

Result / Action to Take

B1

Yes

Using WDS monitor (BACKL_SW) when pressing ICC backlite switch.

Go to B2

Is input OK?

No

Check other probable causes on symptom chart.

B2

Yes

Turn on demist relay using WDS (HEAT_BCK)

Check other probable causes on symptom chart.

Check voltage at pin J2/10 is 0V.

No

Turn demist relay off using WDS.

Go to B3

Check voltage at pin J2/10 is 12V.

Are results OK?

B3

Yes

Check wiring to pin J2/10

Replace BEM

Is wiring OK?

No

Fix wiring

PINPOINT TEST C : IGNITION SWITCH VOLTAGE LEVELS

Test Step

Result / Action to Take

C1

Yes

Does Battery Accessory and Ignition and ground have

Return to symptom chart

appropriate voltage levels when key in relevant ignition position?

No

Check TILA and wiring

PINPOINT TEST D : IGNITION AND ACCESSORY LOW AT KEY OFF

Test Step

Result / Action to Take

D1

Yes

Does ignition and Accessories go low at Ignition Off?

Return to symptom chart

No

Check TILA and wiring

PINPOINT TEST E : POWER WINDOW SUPPLY

Test Step

Result / Action to Take

E1

Yes

Activate and deactivate BEM power window supply

(PID WIND_OS#)

Go to symptom chart.

No

Is the measured output voltage J2/11 as expected?

Go to E2

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Body Electronics Module (BEM)

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DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

E2

Yes

Is wiring to pin J2/11 OK?

Change BEM

No

Fix wiring

PINPOINT TEST F : REMOTE RECEIVER OPERATION

Test Step

Result / Action to Take

F1

Yes

Connect WDS.

Go to symptom chart

Monitor status of PID TNSMT_CMD while pressing different buttons
on remote key.

No

Go to F2

Does PID status reflect last button pressed ?

F2

Yes

Take known good remote key and try and train it to the car

Original remote key was faulty. Replace original

Does BEM acknowledge receipt of key press as part of training

remote key.

procedure?

No

Go to F3

F3

Yes

Change receiver and take known good remote key and try and train it

Original receiver was faulty.

to the car

No

Does BEM acknowledge receipt of key press as part of training

Replace BEM and repeat step F2. If still

procedure?

unsuccessful then replace ICC (Internal ICC
wiring fault).

PINPOINT TEST G : DOOR LOCK INPUT

Test Step

Result / Action to Take

G1

Yes

Monitor voltage at pin J2/24 while locking and unlocking the drivers

Return to symptom chart

door.

No

Is voltage 0V when door unlocked and 12V when door locked?

Check wiring and door lock feedback on motor.

PINPOINT TEST H : BATTERY SAVER CIRCUIT NOT FUNCTIONING

Test Step

Result / Action to Take

H1

Yes

Ensure glovebox globe is present and operational

Battery saver circuit operating correctly. Return

Activate PID

BATTSAVRLY# command with Glove Box Door open

to symptom chart.

Does glove box lamp illuminate?

No

Go to H2

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Body Electronics Module (BEM)

419-10-27

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

H2

Yes

Using WDS activate and deactivate battery saver and monitor pin

Return to symptom chart.

J3/3.

No

Is voltage output as expected?

Go to H3

H3

Yes

Check wiring to pin J3/3. Is wiring OK?

Replace BEM

No

Fix wiring

PINPOINT TEST I : DOME LAMP NOT FUNCTIONING

Test Step

Result / Action to Take

I1

Yes

Turn off ignition.

Dome lamp operating correctly.

Monitor Personalizes settings TAXI_MODE, PANIC_ALR,
DTRIG_MOD, MDT_MOD, HAZ_WARN, HORN_WARN, BAT_SAV,

No

COURTESY.

Go to I2

Test 12V available on J3/3. Operate Dome switch on ICC.

Does Dome lamp operate?

I2

Yes

Select PID LR_AJAR, RR_AJAR

Return to symptom chart

Did dome lamp turn on?

No

Ground J3/12, Go to I3

I3

Yes

Does dome lamp light?

BEM fault

No

Wiring fault

PINPOINT TEST J : NO DEMIST FUNCTION

Test Step

Result / Action to Take

J1

Yes

Are DTC’s B1348 and B1349 present?

Follow fault finding chart for these codes

No

Go to J2

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