Ford Falcon. Manual — part 220

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Powertrain Control Management

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DIAGNOSIS AND TESTING (Continued)

DTC

Description

Possible Causes

P2133

Pedal Position Sensor

SENSOR CONDITION

ELECTRICAL CONDITION

KOEO, KOER (PPS3) High Input

Accelerator Pedal Sensor

Improper connection to PPS.

Cont

damaged or faulty. Check

PPS wiring open circuit or

Connector.

short circuit to VPWR or

VREF.

P2134

Pedal Position Sensor

SENSOR CONDITION

ELECTRICAL CONDITION

KOEO, KOER (PPS3) Intermittent Input

Accelerator Pedal Sensor

Improper connection to PPS.

Cont

damaged or faulty. Check

PPS wiring open circuit or

Connector.

short circuit to VPWR, VREF,

PWRGND or SIGRTN.

P2135

Throttle Position Sensor 1 & SENSOR CONDITION

ELECTRICAL CONDITION

KOEO, KOER 2 Voltage Correlation Fault

Throttle Position Sensor

Improper connection to TPS.

Cont

damaged or faulty. Check

TPS wiring open circuit or

Connector.

short circuit to VPWR, VREF,

PWRGND or SIGRTN.

OTHER CONDITION

PCM damaged or faulty

P2138

Pedal Position Sensor 1 and SENSOR CONDITION

ELECTRICAL CONDITION

KOEO, KOER 2 correlation fault

Accelerator Pedal Sensor

Improper connection to PPS.

Cont

damaged or faulty. Check

PPS wiring open circuit or

connector.

short circuit to VPWR, VREF,

PWRGND or SIGRTN.

OTHER CONDITION

PCM damaged or faulty

P2139

Pedal Position Sensor 1 and SENSOR CONDITION

ELECTRICAL CONDITION

KOEO, KOER 3 correlation fault

Accelerator Pedal Sensor

Improper connection to PPS.

Cont

damaged or faulty. Check

PPS wiring open circuit or

connector.

short circuit to VPWR, VREF,

PWRGND or SIGRTN.

OTHER CONDITION

PCM damaged or faulty

P2140

Pedal Position Sensor 2 and SENSOR CONDITION

ELECTRICAL CONDITION

KOEO, KOER 3 correlation fault

Accelerator Pedal Sensor

Improper connection to PPS.

Cont

damaged or faulty.

PPS wiring open circuit or

short circuit to VPWR, VREF,

PWRGND or SIGRTN.

OTHER CONDITION

PCM damaged or faulty

U1147

Invalid or Missing Data for

IMMOBILIZATION SYSTEM

ACTION REQUIRED

KOEO, KOER Vehicle Security.

CONDITION

Check BEM and CAN line

Cont

PCM did not receive the

operation.

correct response codes from

the BEM

U1900

CAN Communication Bus

Missing CAN messages from

ELECTRICAL CONDITION

KOEO, KOER Fault - Receive Error

HIM, instrument cluster, BEM CAN wiring open circuit or

Cont

and/or traction control (where short circuit to VPWR, VREF,

fitted)

PWRGND or SIGRTN.

Check other DTCs

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Powertrain Control Management

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DIAGNOSIS AND TESTING (Continued)

Glossary

ABS

acronym for Anti-lock Brake System. Prevents wheel lockup during an emergency stop

by modulating brake pressure. Allows the driver to maintain steering control and stop

the vehicle in the shortest possible distance under most conditions

APPS

acronym for Accelerator Pedal Position Sensor. The pedal position sensor has 3

independent outputs, APPS1, APPS2 and APPS3

APPSVREF

acronym for Accelerator Pedal Position Sensor VREF. A 5V supply. Two are used for

the pedal sensor

APPSRTN

acronym for Accelerator Pedal Position Sensor Return. A 0V supply. Two are used for

the pedal sensor

ASR

acronym for Acceleration Slip Control system. Also known as the traction control

system

Absolute

The pressure referenced to a perfect vacuum

Pressure
ACC

acronym for Air Conditioning Clutch in this section

ACD

acronym for Air Conditioner Demand.

ACP

acronym for Air Conditioning Pressure

ACPT

acronym for Air Conditioner Pressure Transducer

ACR

acronym for Air Conditioning Clutch Relay

Actuator

A mechanism for moving or controlling something indirectly instead of by hand

AEAT

acronym for Air Conditioner Evaporator Temperature

Air Conditioning

A vehicular system that modifies the passenger compartment environment by cooling

and drying the air

Analogue Signals are signals that vary within a certain range (ie.0 - 5 volts). An analogue signal is

infinitely variable within the rage. The Throttle Position Sensor (TP) produces an

analogue signal

ATDC

acronym for After Top Dead Centre

Base Timing

Spark advance in degrees before top dead centre of the base engine without any

control from the PCM

Battery

An electrical storage device designed to produce a DC voltage by means of an

electrochemical reaction

BBM

acronym for Broad Band Manifold, see IMCC

BEM

acronym for Body Electronic Module

BFS

acronym for Blower Fan Speed

Blower

A device designed to supply a current of air at a moderate pressure. A blower usually

consists of an impeller assembly,a motor and a suitable case. The blower case is

designed as part of the ventilation system

BOO

Acronym for the Brake On Off Switch.

BPS

acronym for Boost Pressure Sensor. Measures the boost pressure of the turbocharger.

BTDC

acronym for Before Top Dead Centre - relating to the position of the piston within the

cylinder

Camshaft

A shaft on which phased cams are mounted. The camshaft is used to regulate the

opening and closing of the intake and exhaust valves

CAN

Acronym for Control Area Network. An intermodule communications network comprising

a twisted pair wire, CAN-H and

CAN-L

which have complementary output.

Canister

A device designed to hold dry material. An evaporative emission canister contains

activated charcoal that absorbs fuel vapours and holds them until the vapours can be

purged at an appropriate time

Canister Purge

Controls purging of the EVAP canister

CASEGN

acronym for PCM Case Ground

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Powertrain Control Management

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DIAGNOSIS AND TESTING (Continued)

Catalytic

An in-line exhaust system device used to reduce the level of engine exhaust emissions

Converter
CD1..8

acronym for Coil Driver. The PCM’s Coil On Plug output drivers.

CHT

acronym for Cylinder Head Temperature sensor.

Circuit

A complete electrical path or channel, usually includes the source of electrical energy.

Circuit may also describe the electrical path between two or more components. May

also be used with fluids, air or liquids

CKP

acronym for Crankshaft Position Sensor

Closed Loop

A control system that uses a signal from an oxygen sensor mounted in the exhaust

system to control the ratio of air and fuel provided to the engine. Also known as the

Lambda loop

Clutch

A mechanical device that uses mechanical, magnetic or friction type connections to

facilitate engaging or disengaging of two shafts or rotating members

CMP

acronym for Camshaft Position. Indicates camshaft position. Provides camshaft position

information for fuel injection synchronisation

CO

Carbon Monoxide. A colourless, odourless, gas toxic gas formed by combustion within

the cylinder

CO2

Carbon Dioxide. A colourless, odourless, incombustible gas formed during combustion

Coil

A device consisting of windings of conductors around an iron core, designed to

increase the voltage and for use in a spark ignition system

Continuous

The portion of KAM used to store DTCs generated during Continuous Memory Self-Test

Memory
Continuous

A continuous test of the EEC system conducted by the PCM whenever the vehicle is

Memory Self-Test operating
Control

A means or a device to direct and regulate a process or guide the operation of a

machine, apparatus system

Coolant

A fluid used for heat transfer. Coolants usually contain additives such as rust inhibitors

and antifreeze

Crankshaft

The part of an engine that converts the reciprocating motion of the pistons to rotary

motion

Data

General term for information, usually represented by numbers, letters, or symbols

Digital

Digital signals have only one of two values, either on or off. Some systems measure the

duration between the on and off signals to determine a value. The vehicle speed sensor

(VSS)is produces a digital signal

DLC

acronym for Data Link Connector. Connector providing access and/or control of the

vehicle information, operating conditions, and diagnostic information

DTC

acronym for Diagnostic Trouble

Code

An alpha/numeric identifier for a fault condition identified by the On-Board Diagnostic

System

EDF1

acronym for Electro Drive Fan 1. Controls the engine cooling fans at low Speed

EDF2

acronym for Electro Drive Fan 2. Controls the engine cooling fans at high Speed

EMC

acronym for Electro-Magnetic Compatibility

Engine

A machine designed to convert thermal energy into mechanical energy to produce force

or motion

EOT

acronym for Engine Oil Temperature

ETB

acronym for Electronic Throttle Body

ETC

acronym for Electronic Throttle Control.

ETCN

acronym for Electronic Throttle Control Negative. The negative of the ETC motor.

ETCP

acronym for Electronic Throttle Control Positive. The positive of the ETC motor.

EVAP

acronym for Evaporative Emission Evaporative Emission (EVAP) - A system to prevent

fuel vapour from escaping into the atmosphere. Typically includes a charcoal canister to

store fuel vapours

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Powertrain Control Management

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DIAGNOSIS AND TESTING (Continued)

Fan

A device designed to supply a current of air. A fan may also have a frame, motor, wiring

harness and the like

FEPS

acronym for Flash EEPROM Power Supply

FMEM

acronym for Failure Mode Effects Management. An alternative vehicle operation

strategy that protects vehicle function from the adverse effect of a system failure

FP

acronym for Fuel Pump. A pump used to deliver fuel to the engine

Freeze Frame

A block of memory containing the vehicle operating conditions for a specific time

Fuel

Any combustible substance burned to provide heat or power. Typical fuels include

gasoline and diesel fuel. Other types of fuel include ethanol, methanol, natural gas,

propane or in combination

Fuel Rich/Lean

A qualitative evaluation of air-fuel ratio based on an A/F ratio known as stoichiometry or

14.64:1. In the EEC system, rich/lean is determined by a voltage signal from the H02S.

An excess of oxygen (lean) is indicated by an H02S voltage of less than 0.4 volts; a

rich condition is indicated by an H02S voltage of greater than 0.6 volts

GCO

acronym for Gas Cut-out

GLVL

acronym for Gas Tank Level Sensor

GLVL-RTN

acronym for Gas Tank Level Sensor Return

GRND

Ground. The ground, or common side of a DC electrical circuit

GSCA-D

acronym for LPG Stepper Motor A to D

Hall Effect

A process where current is passed through a small slice of semi-conductor material at

the same time as a magnetic field to produce a small voltage in the semi-conductor

HC

Hydrocarbon. A compounds that contains only carbon and hydrogen

HO2S

acronym for Heated Oxygen Sensor. An Oxygen Sensor (02S) that is electrically heated

Hz

Hertz. The measure of a frequency - equal to one cycle per second. Defined by

Heinrich Rudolf Hertz

IAC

acronym for Idle Air Control. Electrical control of throttle bypass air

IAT

acronym for Intake Air Temperature. The temperature of the intake air

IDM

acronym for Ignition Diagnostic Monitor

Ignition

System used to provide high voltage spark for internal combustion engines

IGNSNS

Acronym for Ignition Sense input.

IMCC

acronym for intake Manifold Charge Control

INJ1-8

acronym for Fuel Injectors 1 to 8

Injector

A device for delivering metered pressurised fuel to the intake system or the cylinders

Intake Air

Air drawn through a cleaner and distributed to each cylinder for use in combustion

Intermittent

A fault that may not be present or identifiable at the present time

KAM

acronym for Keep Alive Memory. A portion of the memory within the PCM that must

maintain power even when the vehicle is not operating

KAPWR

acronym for Keep Alive memory Power. Dedicated, unswitched power circuit that

maintains KAM

Knock

The sharp metallic sound produced when two pressure fronts collide in the combustion

chamber of an engine

KOEO

acronym for Key On Engine Off Self-Test. A test of the EEC system conducted by the

PCM with power applied and the engine at rest

KOER

acronym for Key On Engine Running Self-Test. A test of the EEC system conducted by

the PCM with the engine running and the vehicle at rest

KS

acronym for Knock Sensor. Detects engine knock

L

Litres

Lean

excess air (or too little fuel) in the air- fuel ratio being supplied to the combustion

process

LONGFT

acronym for Long Term Fuel Trim

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