Home/Lincoln/Town Car/Lincoln Town Car II (1989-1997)/Repair manual/Engine Controls - Tests W/codes - Eec-Iv/Engine Starts

Contents

Section: Engine Controls - Tests W/codes - Eec-Iv

INTRODUCTION

DIAGNOSTIC FORMATS

SERVICE CODES

KOEO & KOER Codes (Hard Faults)

Continuous Memory Codes (Soft Faults)

RETRIEVING CODES

KOEO & KOER SELF-TEST Codes

Separator Pulse

Pass Codes

Continuous Memory Codes

Fast Codes

CLEARING CODES

Description

Diagnostic Aids

VISUAL CHECK & EQUIPMENT HOOKUP

Analog Volt-Ohmmeter (VOM)

Scan Tester

STAR Series Tester

CHECK DLC Light (Continental) Or Malfunction Indicator Light

KOEO SELF-TEST

CONTINUOUS MONITOR MODE (WIGGLE TEST)

KOEO Wiggle Test Procedure

KOER Wiggle Test Procedure

ADDITIONAL SYSTEM FUNCTIONS

(MIL)

OUTPUT STATE CHECK

Failure Mode Effects Management (FMEM), Code 98 Or 998

Hardware Limited Operational Strategy (HLOS)

Cylinder Balance Test

SUMMARY

CIRCUIT TESTS

HOW TO USE CIRCUIT TESTS

CIRCUIT TEST AA - NO START (DISTRIBUTOR IGNITION SYSTEMS)

CIRCUIT TEST AB - NO START, EI - DISTRIBUTORLESS IGNITION

CIRCUIT TEST AC - NO START, EI - DISTRIBUTORLESS IGNITION

CKT TEST DF - MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC

CIRCUIT TEST DL - PRESSURE FEEDBACK EGR (PFE) VALVE, DELTA

CIRCUIT TEST DN - EGR VALVE POSITION (EVP) SENSOR & EGR

Preliminary Instructions (A/T)

Preliminary Instructions (M/T)

CIRCUIT TEST H - FUEL CONTROL

MFI

SFI

CIRCUIT TEST HA - ADAPTIVE FUEL STRATEGY

Code 183

Code 192

Code 181

Code 189

Continuous Memory Codes 179, 182, 188 & 191

Code 179

Code 182

Code 188

Code 191

CIRCUIT TEST HB - FLEXIBLE FUEL CONTROL

Engine Starts

No Start

CIRCUIT TEST KC - SECONDARY AIR INJECTION SOLENOIDS

Code 563

Code 564

CIRCUIT TEST KM - WIDE OPEN THROTTLE A/C CUT-OUT (WAC) & A/C

CKT TEST ML - SELF-TEST OUTPUT (STO) OR MALFUNCTION

CIRCUIT TEST NA - DISTRIBUTOR IGNITION SYSTEM IGNITION

CKT TEST NB - IGNITION DIAGNOSTIC MONITOR (IDM)

CIRCUIT TEST NC - IGNITION DIAGNOSTIC MONITOR (IDM)

CIRCUIT TEST PB - SPARK TIMING CHECK DISTRIBUTORLESS IGNITION

CIRCUIT TEST PC - SPARK TIMING CHECK DISTRIBUTORLESS IGNITION

Diagnostic Aid

CIRCUIT TEST TA - CLUTCH PEDAL POSITION (CCP) SWITCH/

CIRCUIT TEST TG - ELECTRONIC TRANSMISSION CONTINUOUS

Drive Cycle Test (AXODE Except 3.2L)

Drive Cycle Test (AODE & 3.2L)

All Models

Engine Does Not Start

Without Continuous Memory Code 583

With Continuous Memory Code 583

All sections

Engine Starts Lincoln Town Car II

Engine Controls - Tests W/codes - Eec-Iv

Engine Starts

Fuel pump secondary circuit shorted to power.
Fuel pump relay contacts always closed.
Open FPM circuit between PCM and junction to POWER-TO-PUMP circuit.
Left/front HO2S short to power (dual HO2S applications).
Faulty PCM.