Ford Falcon. Manual — part 395

419-10-8

Body Electronics Module (BEM)

419-10-8

DESCRIPTION AND OPERATION (Continued)

teach, CTS calibration factor loading and PCM

Acknowledgment of a successfully taught first key will

parameter reset functions need to be performed.

be by cycling the door locks once, twice for the

second key and so on.

BEM and PCM security status can be identified by the

Acknowledgment will normally occur within 2.5

BEM’s mobilisation status and current status of the

seconds of inserting the key and turning to the ignition

PCM communications PID’s respectively. CTS

on position. Turn the ignition to the off position and

calibration factor can be read by the WDS. If a

remove the key, immediately insert the next key to be

calibration factor has not been loaded then DTC will

taught and turn to the ignition on position. If a key

be set on the BEM until a valid calibration factor is

cannot be programmed then no acknowledgment will

loaded.

be received.

Normal Operation — BEM Mobilisation

Dealer teach mode will be terminated by the following

conditions:

With the ignition switch in the off position, the BEM

will be in the armed state. Turning the ignition key to

Interruption to the BEM power.

the accessories, ignition or start position will cause

Leaving the ignition in the off position for 10 seconds.

the BEM to commence a challenge of the ignition

Turning the ignition to the on position with a DST key

key’s Digital Signature Transponder (DST). Each time

that has been programmed; once more than two keys

a new challenge is made the old challenges are

have been taught.

flagged as used. If the response is known by the BEM

then it will mobilise. Failure of the challenge will result Once eight keys have been taught.

in the mobilisation state changing to immobilised and

Exiting the Dealer teach mode will be confirmed by a

a transponder DTC will be logged to identify the type

door lock cycle.

of error. If an incorrect response is received a new

challenge will begin, this will be repeated until a

Customer Spare DST Key Teach Mode

correct response is received or the ignition is turned

The customer key teach mode allows the owner

off. If an attempt is made to scan the BEM, it will shut limited teach and delete key function. To enter

down for a set period, after this time the BEM will

customer key teach mode, the owner must have two

resume with a new random challenge. Once a valid

valid keys that are already taught to the BEM. Insert

response is received and the BEM mobilised then the one of the trained keys into the ignition lock and turn

challenges will stop.

to the accessories position, turn to off and remove the

key. Within 5 seconds insert the second key and turn

Normal Operation PCM Enabling

to the ignition on position. At this point the door locks

Once the ignition switch is in the accessories, ignition should cycle to indicate the teach mode has been

or start position, the BEM will look for a pre-challenge entered. To teach additional keys to the BEM, insert

request from the PCM, and respond with a challenge

the new key and turn to the ignition position, if

request message. Any challenges from the PCM will

successful the door lock cycling will indicate the

cause the BEM to respond with a not ready, reading

number of keys taught. Once acknowledgment has

transponder message. Once the BEM has mobilised,

occurred turn the key to off and insert the next key to

it will request a challenge from the PCM and wait for

be taught. Up to additional 6 keys may be taught in

the challenge message from the PCM to appear on

this way.

the CAN bus. The BEM will calculate a response from

For key deletion only the keys that are not taught to

information learnt from the PCM and transmit a

the BEM will be deleted. The two known keys used to

response code. A challenge acknowledgment

enter teach mode plus any additional keys taught will

message from the PCM shall indicate to the BEM that

be valid, all other keys will be erased. To exit teach

the response has been accepted. PCM

mode leave the ignition on for longer than 10

communication status may be monitored using BEM

seconds. An acknowledgment will be received when

diagnostics.

the BEM exits teach mode.

Dealer DST Key Teach Mode

PCM Parameter Reset

This mode is used by dealers to teach new DST keys

A PCM parameter reset will be required if either a

to a replacement BEM. The mode can also erase DST

BEM or a PCM are replaced in the field or a dealer

keys. To enter this mode using the WDS tester ensure

DST ignition key teach is performed. If PCM

that the ignition is turned to the off position. Entry into

parameter reset invoked by WDS it will also require

the mode and deletion of the PCM ID is confirmed by

the entry of a CTS calibration factor.

a mode acknowledgment.

The BEM must be mobilised by turning the ignition to

Select the anti-theft status screen, and then select

the on position using a taught DST Key. Using the

Transponder Dealer Teach Mode. Insert DST key 1

WDS tester select PCM parameter reset function,

into the ignition lock, then turn to the ignition on

complete the steps indicated on the WDS screen.

position. For each DST key, the BEM will record the

DST unique identification number and program the

DST with its own encryption code key.

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419-10-9

Body Electronics Module (BEM)

419-10-9

DIAGNOSIS AND TESTING

Boot shut

Body Electronics Module

Glovebox open

Inspection and Verification

Do not sit in the Drivers seat

During this test, it is important to make visual

On Demand Self Test

observations.

Using the WDS Tester it is possible to conduct an on

The total time for the test is 14 seconds the following

demand self test.

table gives the order and function being tested.

The pre-conditions for this test are as follows:

NOTE: We can categorise the tests as visible and

Ignition key in the ignition switch and turned to the invisible to the operator. The following is a table of

ignition on position

tests/operations to be performed. It will do different

Headlamp switch in Auto position

tasks at 1 second intervals.

Time (second)

Visible Tests

Invisible Tests

Precondition

Comments

0 (start)

Door Lock

Driver Door Lock

Relay energised for

feedback

200ms

1

Memory Seat #1

Seat Module Data

!!!Do not sit on the

High series only

line

seat

DTC may be set if

Open circuit*

option is not fitted.

Short to battery

2

Driver Door Unlock

Driver Door Lock

Relay energised for

feedback

200ms

Memory Test*

4

Horn Relay

Horn Relay line

100ms On, 100ms

Open circuit*

Off,100ms on,

Short to battery

400ms off, 100ms

on, 100ms

Off,100ms on, Off

5

Front wash motor

Key in ignition

High series only

position

6

Battery Saver

Leave open "glove

Battery Saver left on

box" or turn on "map for rest of test

lamp" to observe

Transceiver TX

Battery Saver

Data Line

active.

Open circuit*

Short to battery

TILA Challenge

Battery Saver

TILA - Key ID

activeKey in ignition

unknown

position

TILA - Faulty

transponder

TILA

disconnected

TILA - Faulty or

fixed code

transponder

7

Front wiper motor

Wiper Feedback

Key in ignition

1 wipe (Turn on for

position

700ms)

Front wiper switch

Key in ignition

High series only

potentiometer*

position

Out of Range

Circuit Failure

8

Boot Release

Boot Release

Boot needs to be

Relay energised for

feedback

shutBattery Saver

800ms

must be active

DTC will be set on

utes.

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Body Electronics Module (BEM)

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DIAGNOSIS AND TESTING (Continued)

Time (second)

Visible Tests

Invisible Tests

Precondition

Comments

Immobilisation

Key in ignition

Must follow TILA

transfer*

position

challenge

– message not sent

from PCM (missing

message)

9

All Door Unlock

Relay energised for

200ms

Cabin Temperature

Key in ignition

High series only

Sensor*

position

Circuit Open

Circuit short to

battery

Circuit short to

ground

Driver Sunload

Key in ignition

High series only

Sensor*

position

Circuit Open

Circuit short to

battery

Circuit short to

ground

Passenger Sunload Key in ignition

High series only

Sensor*

position

Circuit Open

Circuit short to

battery

Circuit short to

ground

10

Heated Backlight

Heated Backlight

Key in ignition

Look at dash board

Relay

position

to observe indicator

Open circuit*

Short to battery

11

Power Windows

Power Window

Hold button to

Relay

observe window

Open circuit*

operation

Short to battery

12

Dome Lamp

No fade in/out

Twilight Sensor*

Battery Saver active High series only

Circuit Open

Circuit short to

battery

Circuit short to

ground

13

Auto Headlamp

Auto headlamp feed Headlamp switch in High series only

back

"auto" position

CAN PCM data out

Key in ignition

of range (speed)*

position

CAN battery voltage Key in ignition

- signal out of range position

from cluster*

14 (end)

Dome flashes

(300ms on) to

indicate self test

complete.

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419-10-11

Body Electronics Module (BEM)

419-10-11

DIAGNOSIS AND TESTING (Continued)

BEM Diagnostic Trouble Code (DTC) index

DTC

Description

Precondition

Action

C1943

Airbag Deployment

Airbag Deployed CAN bit Airbag deployed. No

Indication Input Fault

received. Status read

action

during self tests.

B1213

Anti-Theft Number of

Number of programmed

Program more Keys

Programmed Keys Is

keys is less than 2.

Below Minimum

B1250

Air Temperature Internal

Out of range. Will be set if Check ICC wiring. If

Sensor Circuit Failure

input is between 0.32V

wiring OK then replace

and 0.47V

Cabin Temperature

Sensor.

B1251

Air Temperature Internal

Input floats > 4.56V

Check resistance of CTS.

Sensor Circuit Open

If O/C then change CTS.

If not O/c then check ICC

wiring.

B1253

Air Temperature Internal

Input < 0.32V, External

Check resistance of CTS.

Sensor Circuit Short To

Fault

If S/C then change CTS.

Ground

If not S/c then check ICC

wiring.

B1259

Solar Radiation Sensor

Circuit open or short to

Check Driver’s Sunload

Circuit Open

battery, Input greater then Sensor and Wiring.

4.78V, External Fault

B1261

Solar Radiation Sensor

Input held at less than

Check Driver’s Sunload

Circuit Short To Ground

0.17V, External Fault

Sensor and Wiring.

B1300

Power Door Lock Circuit

Door Lock Motor Error /

Pinpoint tests G and N.

Failure

Driver’s door lock

feedback did not change

after lock action, External

Fault

B1342

ECU Is Faulted

EEPROM /TEMIC are

ECU Failure - Replace

continuous only, but if set Module.

the DTC will be reported

as part of self test. ROM /

RAM DTC can be set

after BEM power reset

(continuous DTC) or

during self test. Internal

Fault

B1348

Heated Backlite Relay

O/C or S/C to Ground,

Check Heated Backlite

Circuit Open

External Fault

and wiring

B1349

Heated Backlite Relay

S/C to Battery, External

Check Heated Backlite

Short To Battery

Fault

and wiring

B1446

Wiper Park Sense Circuit Feedback does not

Check Wiper motor,

Failure

change / park circuit

wiring and switch

failure, External Fault

Confirm DTC with Self

Test

B1458

Wiper Washer Pump

Front wash motor error,

Check Washer motor,

Motor Relay Circuit

External Fault

wiring and switch

Failure

B1548

Power Window Master

Power Window Relay

Check Power window

Circuit Open

driver O/C or S/C to

relay and wiring

Ground, External Fault

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