Ford Falcon. Manual — part 212

303-14-62

Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

CAN Wiring Diagram

Signal Name

Receiving ECU

Traction

Body

Audio/

Instrument

Heater

WDS

Control

Electronics

Climate

Cluster

Integrated

Tester

Module

Module

Control

Module

Module

AC Compressor Clutch

R

status
AC Shed Load

R

R

Speed control Telltale

R

Engine Coolant Temperature

R

R

R

Engine RPM

R

R

R

R

Engine Temperature

R

Warning
Engine Type

R

R

R

Engine Torque

R

ETC Warning Lamp

R

Fuel Usage

R

Log DTC

R

R

R

ODO Count

R

Oil Pressure Warning

R

Smartshield Security Codes

R

R

Smartshield Warning Lamp

R

Gear Position/ ratio

R

R

R

Throttle position

R

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

Signal Name

Receiving ECU

Traction

Body

Audio/

Instrument

Heater

WDS

Control

Electronics

Climate

Cluster

Integrated

Tester

Module

Module

Control

Module

Module

Transmission Fault

R

Transmission Gear
Transmission Mode

R

Transmission Overheat

R

Transmission Type

R

R

Vehicle speed

R

R

R

R

Diagnostics

R

The PCM receives the following data from CAN for its

operation:

Signal Name

Transmiting ECU

Function

Body

Heater

Instrument Traction

WDS

Electronics Integrated

Cluster

Control

Tester

Module

Module

Desired Torque

T

Reduce engine torque to

Command

the commanded level

during traction control

events

Evaporator

T

AC compressor protection

temperature

calculations

Blower voltage

T

Cooling system load

calculation to determine

appropriate electro-drive

fan speed

A/C Clutch request

T

Turns the AC compressor

on and off to control the

evaporator temperature

Park brake on

T

Cancels speed control

Wheel Speed

T

Vehicle speed calculation

Immobilization Codes

T

Smartshield Security

Diagnostics

T

Diagnostic Function

Connections

Smartshield Security

PCM PinB13

. . . ….… …... . CAN-H

The PCM forms part of the Smartshield immobilisation

system with the BEM, instrument cluster.

PCM Pin B14

. . . . . . CAN-L

Smartshield system diagram

Diagnosis
Diagnostic Trouble Codes (DTC) are retrieved through

the diagnostic connector using the WDS tester. Fault

Finding Tables for DTCs are in the ‘Diagnosis’

section.

DTCs applicable to the CAN are shown in the

following table.

DTC

Test Mode

Condition

U1900

KOEO, KOER

CAN Communication Bus

Cont

Fault - Receive Error

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

At key-on, the PCM transmit a code on the CAN line

DTC

Test

Condition

Action required

to the BEM to determine if the vehicle should be

Mode

mobilized. The BEM will only respond with a correct

B2139

KOEO

PCM or BEM

Re-install

code if the key transponder is recognized. The PCM

Cont

substituted on

original

immobilizes the engine if it does not receive the

vehicle

components or

correct response code. The PCM immobilizes the car

BEM does not perform a

by deactivating:

recognise

Parameter

fuel injectors

ignition key

Reset

ignition system

operation to

train the

fuel pump

immobilization

starter motor

system

The PCM controls the illumination of the Smartshield

Check BEM

warning indicator on the instrument cluster using the

DTCs

CAN line. At key-off, the instrument cluster

B2141

KOEO

Incomplete

Check KAPWR

automatically flashes the warning jewel once every 2

Cont

PCM/BEM

to PCM, BEM,

seconds. At key-on, the PCM commands the warning

training.

and CAN lines

jewel to illuminate for 2 seconds for system prove out.

then perform

The lamp is commanded to flash if the system is

Parameter

immobilized. The lamp extinguishes after 2 seconds if

Reset

the system is operational.

Operation

again.

Radio Security Code

P1260

KOEO

Vehicle

Check other

The PCM transmits a unique PCM ID code on the

Cont

Immobilized.

DTCs.

CAN for the radio’s security system to discourage

U1147

KOEO

Unsuccessful

Check BEM

theft.

Cont

PCM/BEM ID

and CAN

Connections

training

operation

The PCM Smartshield System operates by

Failure Mode

communicating codes on the CAN line with the BEM,

the audio system and the instrument cluster.

Failure in any part of the Smartshield Security System

will result in no vehicle operation.

Maintenance

Start Relay

Replacement of the PCM, BEM and keys will require

a “Parameter Reset ” to be performed.

The Smartshield and Smart Start function of the PCM

strategy control the START relay. The START relay is

1. Connect a WDS tester to the Data Link Connector

enabled when the Smartshield immobilisation system

(DLC).

is not immobilised. After the vehicle starts, the START

2. Turn the ignition to the RUN/START position

relay is de-energise to prevent unintended starter

3. Select “Service Bay Function” and follow the

motor operation.

menu directions to select “Parameter Reset”

Connections

4. Select “Enter Security Access” from the menu.

PCM PinB4

. . . ….… …... .STRTEN

5. There is a 10-minute access delay.
6. Select “Parameter Reset” from the menu.

Testing

7. When the BEM is trained correctly, the door locks 1. Observe that the Smartshield warning lamp

will cycle twice.

operates for 2 seconds when the ignition is key is

8. Remove the WDS tester.

turned from the OFF to the RUN position. If the

Smartshield warning lamp flashes, refer to the

9. Cycle the ignition key OFF then RUN/START.

Smartshield section in this group.

10. Verify that the Smartshield indicator turns on for 2

2. Attempt to start the vehicle in the “P” and “N”

seconds and the vehicle will start.

positions.

Replacement of the PCM will also require the audio

3. Check that condition of the start relay located in

system to be trained to the new PCM ID code. This

the fuse/relay box adjacent to the battery.

procedure can be carried out by using the WDS

tester.

4. Check the harness for open circuits and short

circuits.

Diagnosis
DTCs applicable to the PCM Smartshield system are

shown on the following table.

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

operation are logged in Keep Alive Memory (KAM) for

Diagnosis

later retrieval.

Diagnosis

On-demand tests are initiated as required to diagnose

faults or check vehicle condition. During on-demand

Diagnostic System

tests, the Powertrain Control Module (PCM) checks

various sensors and circuits for faults or malfunctions.

A sophisticated on-board diagnostic system is

integrated into the PCM software to monitor input and

Continuous Testing

output components.

Continuous testing occurs throughout normal vehicle

The Powertrain Control Module (PCM) checks that

operation. Testing commences 4 seconds after the

sensors and calculated values are within specified

ignition key is moved to the ON position. Continuous

operating parameters. The test varies according to the

testing does not occur whenever on-demand tests are

diagnosis mode and the component. Where a value

being performed.

falls outside of parameters, a Diagnostic Trouble

Code (DTC) is reported and logged in the PCMs

When the Powertrain Control Module (PCM) detects a

memory for retrieval. Components and circuits are

fault or malfunction a Diagnostic Trouble Code (DTC)

tested in various ways depending on the hardware,

is reported and stored in the PCMs Keep Alive

function, and type of signal.

Memory (KAM) memory. KAM has its own power

supply that retains the codes even after the ignition is

Analogue inputs are typically checked for open or

switched OFF. DTCs can be retrieved by the

short circuits, and out-of-range values. Outputs are

Worldwide Diagnostic System (WDS) testing tool.

checked for open or short circuits by monitoring the

circuit associated with the output driver when the

Continuous DTCs can be retrieved or cleared at any

output is energised or de-energised. Some outputs

time using the WDS, independently of on-demand

are also monitored for the proper function by

DTCs.

measuring the reaction of the control system to a

To eliminate the storage of transient conditions,

given output command.

continuous fault codes are filtered. Only DTCs present

for a specific duration are stored in memory.

Diagnostic Connector

NOTE: Disconnecting the battery will clear the KAM

Diagnostics on the PCM are accessed through the

and all DTCs stored in memory.

diagnostic connected, situated in the fuse

Once a DTC is stored, it remains in memory until

compartment below and to the right of the steering

manually cleared or the PCM is disconnected from the

column. Connect a Worldwide Diagnostic System

battery supply. If a stored continuous DTC does not

(WDS) tester to retrieve any Diagnostic Trouble

occur for 80 subsequent key-ons, then the code is

Codes (DTC), initiate self-testing diagnostics, retrieve

erased from memory.

Parameter Identification (PID) values or reset the

Keep Alive Memory (KAM) or adaptive values.

When a DTC is reported from a major input or output

sensor or circuit, the PCM will log the DTC. A Failure

Diagnostic Connector Location

Mode Effects Management (FMEM) flag is set

internally in the PCM, which then,if necessary, will

implement a FMEM strategy to allow continued

operation of the vehicle.
The PCM performs the following continuous tests:

Analogue/Digital Limit Check
Air Conditioning System Tests
CMP Test
EDIS Test
CMP Test
VSS Test
Auto Transmission Test
Traction Control Test
Output Circuit Check

Diagnostic Modes

Setting Of Failure Mode (FMEM) flags

The PCM powertrain control management system has

Servicing Warm-up Counters

two diagnostic modes: Continuous Testing and

On-Demand Tests.

Fault Filter Calibration

Continuous testing occurs during normal vehicle

Analogue/Digital Limit Check

operation. Faults or malfunctions which occur during

The Analogue/Digital Limit Check tests the limits and

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