Ford Falcon. Manual — part 396

419-10-12

Body Electronics Module (BEM)

419-10-12

DIAGNOSIS AND TESTING (Continued)

DTC

Description

Precondition

Action

B1549

Power Window Master

Power Window Relay

Check Power window

Circuit Short To Battery

driver S/C to Battery,

relay and wiring

External Fault

B1600

PATS Ignition Key

TILA RF receiver error

Check power available on

Transponder Signal Is

J1/4 & earth on J1/3.

Not Received

Check continuity from

BEM J1/7 to TILA J6/1.

Check TILA.

B1601

PATS Received Incorrect Key ID unknown or

Check programmed key

Key-Code From Ignition

Incorrect challenge

is used. Reprogram keys

Key Transponder

if required.

B1602

PATS Received Invalid

Faulty or fixed code

Program correct

Format Of Key-Code

transponder

transponder Key

From Ignition Key

Transponder

B1693

Autolamp On Circuit

Autoheadlamps Driver

Twilight sensor Headlamp

Failure

Circuit Failure, External

switch must be in Auto

Fault.

position. Check Wiring

and headlamp switch and

headlamp relay.

B1790

Autolamp Sensor Input

Twilight sensor input

Check operation of

Circuit Failure

circuit failure

battery saver. Check

Twilight sensor and wiring

B1791

Autolamp Sensor Input

Twilight sensor input

Check Twilight sensor

Circuit Open

circuit open, External

and wiring

Fault

B1982

Driver’s Door Unlock

Driver’s door unlock is

Pinpoint tests G and N.

Relay Circuit Failure

not successful / Driver’s

door lock feedback did

not change after unlock

action

B2072

Seat Memory Module

S/C to Battery, External

Check Seat memory

Data Line Short to Battery Fault

module and wiring J2/22

Check option is fitted

B2073

Seat Memory Module

O/C or S/C to Ground,

Check Seat memory

Data Line Open or Short

External Fault

module and wiring J2/22

to Ground

Check option is fitted

B2074

Seat Memory Module

S/C to Battery, External

Check Seat memory

Enable Line Short to

Fault

module and wiring J2/23

Battery

Check option is fitted

2075

B Seat Memory Module

O/C or S/C to Ground,

Check Seat memory

Enable Line Open or

External Fault

module and wiring J2/23

Short to Ground

Check option is fitted

B2103

Antenna Not Connected

TILA antenna not

Check power available on

connected, External Fault J1/4 & earth on J1/3.

Check continuity from

BEM J1/7 to TILA J6/1.

Check TILA.

B2141

NVM Configuration

No PCM ID Stored

Conduct a parameter

Failure

reset

B2431

Transponder

Key programming failed

Program new key. If this

Programming Failed

fails try new transponder.

If this still fails try a new

TILA.

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Body Electronics Module (BEM)

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DIAGNOSIS AND TESTING (Continued)

DTC

Description

Precondition

Action

B2477

Module Configuration

Calibration factor is not

Program CTS calibration

Failure

configured

factor

B2511

Horn Output Relay Circuit S/C to Battery, External

Test wiring J2/9 and horn

Short to Battery

Fault

relay

B2682

PCM (PCM)

Immobilisation Message

Conduct a parameter

Communication Fault

Invalid

reset. If this fails check

the PCM.

B2849

Horn Output Relay Circuit O/C or S/C to Ground,

Check Horn relay and

Open

External Fault

wiring J2/9

Continious DTC not valid.

On demand DTC is valid.

B2891

Front Wiper Switch

Potentiometer is missing, Check wiper dwell pot

Potentiometer Circuit

External Fault (O/C or

and wiring J2/19 to J2/8

Failure

S/C)

B2894

Decklid Release Circuit

Boot is not ajar after boot Boot release solenoid

Failure

release, External Fault

error, Test boot ajar

switch and listen for

activation of solenoid. If

not heard then check

wiring and boot solenoid.

DTC not valid on utes.

B2929

Transmit Data Line Short S/C to Battery, External

Check continuity from

to Battery

Fault

BEM J1/8 to TILA J6/9.

Check wiring and TILA.

B2930

Transmit Data Line Open O/C or S/C to Ground,

Check continuity from

Circuit or Short to Ground External Fault

BEM J1/8 to TILA J6/9.

Check wiring and TILA.

U1900

CAN Communication Bus CAN Network failure

Check PID B902 for

Fault - Receive Error

(Missing Messages)

modules whose

messages where missed.

Check relevant module

and CAN wiring.

U2197

Invalid ’Vehicle Speed’

CAN bytes for vehicle

BEM default speed data

data

speed is read as $FF

used is Zero. Test PCM.

from PCM

Symptom Chart

Condition

Source

Action

BEM related

Check for open circuit J1/1 to J4/12

No Clock illumination

No Graphics Illumination

and J1/2 to J4/10

Feedthrough

Check for 12v at J1/2 when park

No park lamp supply feedthrough

lamps on

from park lamp relay

Check other possible causes on

Incorrect BEM fitted

symptom chart

Cluster fault

Check correct level BEM fitted

Wiring fault
Clock fault

BEM related

Check 12v at J1/4 and J6/3

No TILA light Ring Illumination

Courtesy lamp driver

Check BEM battery fuse

Battery BEM fuse blown

Test continuity J6/10 to J6/3

Cluster fault

Go to pinpoint test A

Wiring fault

Check other possible causes on

TILA fault

symptom chart

O/C globe

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Body Electronics Module (BEM)

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DIAGNOSIS AND TESTING (Continued)

Condition

Source

Action

BEM related

Check relevant fuses

No Demist Function

Relay driver failure

Check DTC B1348/49. If present go to

DTC’s logged

Pinpoint Test B. If not present check

Backlight fuse 40A blown

ICC, wiring, Element, external relay.

BEM accessories fuse Blown
Radio 2 fuse (7.5A) blown
External Relay failure
Demist Element fault
Demist switch failure (ICC)

Audio fault

Wiring fault

No accessories feed to BEM
CAN line failure

BEM related

Connect WDS

BEM does not mobilise

PCM/BEM comms not working

Turn Ignition On and Run On Demand

BEM/TILA comms not working

Self Test.

More than one key in the TILA

Record any DTC’s logged.

antenna field.

Refer DTC chart for relevant pinpoint

Transponder does not validate.

tests

Wrong type of transponder key eg

– Note TILA Status

Ford Transit.

Record any DTC’s logged.

Magnetic badge on key ring.

Low frequency security scanners may

Vehicle parked close to magnetic

interfere with TILA read process.

scanner.

Check other possible causes on

PCM fault

symptom chart.

Wiring fault (CAN)
TILA fault
Transponder key fault

Customer Cannot Teach Transponder

BEM related

Check programmed keys mobilise car.

Customer Key teach mode not

Pinpoint test C

Keys

enabled. BEM programmed to

If pinpoint test C OK check other

disable customer key teach.

probable causes on symptom chart.

Ignition not turned to accessories
position.
Low Battery Voltage.
More than one key in antenna field
Wiring fault
TILA fault
Transponder key fault

BEM Related

Use WDS to check vehicle anti theft

BEM/PCM Training Failure

BEM has not learnt Ignition Key.

status PID THEFTS

BEM does not learn PCM key or

Use WDS to check if ignition keys

loses Key (System Noise)

have been trained (>1)

BEM validation failure (dealer

PID N_KEYCODE If training fails retry

used Dealer Teach Mode causing

parameter reset.

code erasure)

If pinpoint test C OK check other

Low battery prevents Training.

probable causes on symptom chart.

Power interrupted during training.
Wiring fault.
Water in PCM connector (No codes
Logged)
PCM fault
Wiring fault

Auto Headlamps do not turn on at low

BEM related

Check setting values PID ON_THOLD

Setting values Incorrect.

and DTC’s B1693, B1790, B1791 with

light level

Low series BEM fitted to Vehicle.

WDS.

Open circuit wiring Sunload sensor to

Control headlamp drivers using WDS

BEM.

PID AUTOOUTST#.

Twilight sensor fault

Check other possible causes on

Wiring fault

symptom chart.

Headlamp switch fault

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Body Electronics Module (BEM)

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DIAGNOSIS AND TESTING (Continued)

Condition

Source

Action

BEM related

Check setting values PID ON_THOLD

No Automatic Delay of Headlamps

Faulty Headlamp Drivers

and DTC’s B1693, B1790, B1791 with

Low Series BEM Fitted.

WDS.

No Park input to Cluster or BEM

Control headlamp drivers using WDS

Pin J2/12 or J1/10 remains high at

PID AUTOOUTST#.

Ignition Off.

Go to Pinpoint Test D

Incorrect Headlamp switch fitted.

Check other possible causes.

Headlamp switch fault
Wiring fault

BEM Related

Operate wipers and monitor wiper park

Wipers do not Park in Off position

Feedback circuit faulty J3/1, J3/2

switch status using WDS and monitor

Wiring fault

pin J3/1. If J3/1 does not follow status

Wiper motor fault

of PID WFLUID Byte 1 Bit 0 then
change BEM else.

Wiper switch fault

Check other possible causes on

symptom chart.

Wipers do not Operate in Intermittent

BEM Related

Do all tests in Wiper does not park, if

No accessories input to BEM

ok proceed.

Mode.

BEM wiper relay faulty

Using WDS read wiper switch status

Wiring fault

PID WP_STAT by selecting each

Wiper motor fault

position with intermittent selected. Pin
J2/19 should vary between 0 - 2.5V as

Wiper switch fault

intermittant position is changed. If
voltage varies and PID WP_STAT
does not reflect change then replace
BEM.

Else check other possible causes.

BEM Related

Functional test for missing CAN

No Variable Speed Dependant Wipers

No accessories input to BEM

messages

BEM wiper relay faulty

Check for existence of DTC U2917

No Speed data or invalid data from

(invalid speed data) using WDS. If

PCM

present check PCM else

Wiring faulty (CAN)

Check other possible causes.

Intermittent Dwell Time cannot be

BEM Related

Use WDS to Monitor Wiper dwell

BEM potentiometer input faulty.

positions 1 to 5 (PID WP_STAT) while

changed

BEM wiper motor driver faulty

changing position of dwell pot.

(relay or relay drive circuit)

– If not OK then test dwell pot.

Wiper dwell pot switch faulty

If WDS check OK then check Check

Wiper stalk switch faulty

other possible causes

Wiring faulty

No Wash Function or timed wash or

BEM Related

Check washer level warning jewel on

BEM output driver faulty

cluster. If showing then add water to

wipe after wash

BEM wash input faulty

wahser bottle.

Washer bottle empty

Using WDS monitor status of washer

No accessories supply to BEM

switch (PID WASH_SW) when

Faulty wash motor

activating switch. If not OK check

Faulty wiring

voltage level at pin J3/10. If PID status
and voltage levels do not match, then

Faulty washer switch

change BEM. If signal does not
change then check wiring. If OK then

Using WDS activate and deactivate

washer motor output (PID
WASH_SW). If no operation of washer
motor, check wiring and motor. If
wiring and motor OK then change
BEM.

Check other possible causes.

BEM related

Go to Pinpoint test E

Power Windows not Working

Faulty BEM power window supply

Check other possible causes.

output

Wiring faulty
Power window switch faulty
Power window motor faulty

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