FORD CODE READER
INNOVA 3143
AUDIO
ON FORD TEST
CODE
OFF READER HOLD
E C M A B S
FORD LINCOLN MERCURY
Domestic vehicles 1981 to 1995
FOR FORD, LINCOLN, MERCURY
DOMESTIC VEHICLES FROM 1981 TO 1995
Ford Innova 1998
Table of Contents
Paragraph Title Page No.
YOU CAN DO IT!............................................................ ii
GENERAL INFORMATION
1.1 YOUR VEHICLE'S COMPUTER SYSTEMS ................ 1-1
1.2 ABOUT YOUR CODE READER.................................... 1-1
1.3 SAFETY PRECAUTIONS .............................................. 1-3
1.4 VEHICLE SERVICE MANUALS .................................. 1-4
1.5 PRELIMINARY VEHICLE DIAGNOSIS ..................... 1.5
WORKSHEET
1.6 DIAGNOSTIC ROUTINE CHECKLIST........................ 1-8
ECM
2.1 VEHICLES COVERED .................................................. 2-1
2.2 TEST CONNECTORS LOCATION ............................... 2-2
2.3 OPTIONAL EXTENSION CABLE ................................ 2-4
2.4 BEFORE YOU BEGIN .................................................. 2-5
EEC-IV SYSTEMS
2.5 RETRIEVING FAULT CODES FOR ............................ 2-5
EEC-IV SYSTEMS
2.6 ADDITIONAL TESTS FOR EEC-IV SYSTEMS...............2-12
2.7 ERASING "CONTINUOUS MEMORY" ........................2-17
CODES FOR EEC-IV SYSTEMS
2.8 FAULT CODE DEFINITIONS FOR..............................2-17
EEC-IV SYSTEMS / CAR & TRUCK)
2.9 RETRIEVING FAULT CODES FOR ............................2-33
MCU SYSTEMS
2.10 FAULT CODE DEFINITIONS FOR MCU....................2-37
SYSTEMS / CAR & TRUCK
ABS
3.1 VEHICLES COVERED .................................................. 3-1
3.2 TEST CONNECTOR LOCATION.................................. 3-1
3.3 RETRIEVING ABS FAULT CODES ............................. 3-2
3.4 ERASING ABS CODES.................................................. 3-3
3.5 ABS FAULT CODE DEFINITIONS .............................. 3-3
GLOSSARY
4.1 INTRODUCTION ........................................................... 4-1
4.2 GLOSSARY OF TERMS AND ...................................... 4-1
ABBREVIATIONS
WARRANTY AND SERVICE
5.1 LIMITED ONE YEAR WARRANTY.............................. 5-1
5.2 SERVICE PROCEDURES.............................................. 5-1
i Ford
1
1.1 YOUR VEHICLE'S COMPUTER SYSTEMS
Today's vehicles are equipped with computer systems which
help control the vehicle's operation and performance. The
Powertrain Control Module, also called the Engine Control
Module (ECM), Engine Control Unit (ECU) or Engine Control
Computer (ECC) helps control the engine's operation and
increase overall performance. Typical control includes fuel
delivery, idle speed control, spark timing, and emission
systems. The Electronic Brake Control Module (EBCM)
controls the vehicle's Anti-Lock Brake System (ABS).
In addition to controlling operation of the associated vehicle
systems, the computers are equipped with self-diagnostic
programming. When a fault is detected, the computer stores
this information in it's memory as a fault code.
1.1.1 Fault Codes
The fault codes are also called "diagnostic codes" or "trouble
codes". These codes can be used to identify systems or
components which are malfunctioning.
The computer records codes for two types of problems:
s "Hard" Codes. "Hard" codes are stored for problems
which are present at the time of testing.
s "Intermittent" Codes or "Continuous Memory"
Codes. "Intermittent" codes are stored for problems which
happened in the past but are not currently present at the
time of testing. "Intermittent" codes stay in the computer's
memory even when the problem is no longer present.
1.2 ABOUT YOUR CODE READER
The Code Reader is a tool which allows you to retrieve these
fault codes from the computer's memory. The Code Reader will
not damage the vehicle's computer systems.
1-1 Ford
General Information
1.2.1 Controls and Indicators
1
INNOVA 3143
2 AUDIO
3
ON FORD TEST
CODE
OFF READER HOLD
E C M A B S
FORD LINCOLN MERCURY
Domestic vehicles 1981 to 1995
1. LED Indicator Blinks on/off to give you service codes
from the vehicle's onboard computers.
2. AUDIO ON/OFF Switch Turns audio indicator on and
off. Useful when the LED indicator cannot be seen.
AUDIO
s ON A tone sounds ON
whenever the LED indicator
lights.
s OFF No tone. OFF
3. TEST/HOLD Switch Controls the vehicle's onboard
computer Self-Test input ground loop.
TEST
s TEST Testing starts.
s HOLD On hold, no
testing.
HOLD
Ford 1-2
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