Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Perform this test when instructed during QUICK TEST or if directed by other test procedures. This system test is intended to diagnose and isolate intermittent concerns for the following:

All Engine Control Sub-Systems
Coil Pack Ignition Systems Using Distributorless Ignition System Tester (DIST)

NOTE: For additional Parameter Identification (PID) information, see appropriate PIN VOLTAGE/PID VALUE CHARTS article.

The intermittent test table is used to determine which test to perform for a suspect circuit. See INTERMITTENT TEST table. Corresponding PIDs for each circuit are listed. Some circuits do not have an associated PID and can be measured with a Digital Volt-Ohmmeter (DVOM). If vehicle has coil pack ignition system and engine is a no-start, perform ignition test. Go to step 50).

INTERMITTENT TEST

PID

Associated Circuit

Test Type

4X4L

Input

ACCS

A/CCS

Input

ACP & ACP V

A/CP

Input

⁽¹⁾

AFC

Input

AIR

Output

AIR B

AIRB

Output

AIR D

AIRD

Output

AIR M

AIRM

Input

BARO

Input

BPP/BOO

BPP

Input

⁽¹⁾

BPS

Input

CAMDCR

Output

CAMERRR

Input

CAS GND

CASE GND

Input

CCS

Output

⁽¹⁾

CD-A (Primary)

Output

⁽¹⁾

CD-B (Primary)

Output

⁽¹⁾

CD-C (Primary)

Output

⁽¹⁾

CD-D (Primary)

Output

⁽¹⁾

CD-E (Primary)

Output

⁽¹⁾

CD-F (Primary)

Output

⁽¹⁾

CD-G (Primary)

Output

⁽¹⁾

CD-H (Primary)

Output

⁽¹⁾

CD-I (Primary)

Output

⁽¹⁾

CD-J (Primary)

Output

CFCIL

Output

CHT & CHT V

CHT

Input

CHTIL

Output

⁽¹⁾

CKP(+)

Input

⁽¹⁾

CMP

Input

CPP/PNP

CPP

Input

⁽¹⁾

CTO

Output

⁽¹⁾

DOL

Output

DPFEGR

Input

ECT & ECT V

ECT

Input

EFTA & EFTA V

EFT-A

Input

EFTB & EFTB V

EFT-B

Input

⁽¹⁾

EGRMC 1

Output

⁽¹⁾

EGRMC 2

Output

⁽¹⁾

EGRMC 3

Output

⁽¹⁾

EGRMC 4

Output

EGRMDSD

Output

EGRVR

Output

EOT & EOT V

EOT

Input

EPC & EPC V

EPC

Output

⁽¹⁾

EPC 2

Output

⁽¹⁾

EPC 3

Output

EVAPCP & EVAPDC

EVAPCP

Output

EVAPCV

Output

EVAPPF

Input

LFC

Output

Input

FLI & FLI V

FLI

Input

Output

FPM & FP M

FPM

Input

FRP & FRP V

FRP

Input

FSV

Output

FSVM

Input

FTP & FTP V

FTP

Input

GEAR

Input

GENFDC

Output

GFS

Input

⁽¹⁾

HCDS

Input

HFC

Output

O2S11

HO2S-11

Input

O2S12

HO2S-12

Input

O2S21

HO2S-21

Input

O2S22

HO2S-22

Input

HTR11

HTR-11

Output

HTR12

HTR-12

Output

HTR21

HTR-21

Output

HTR22

HTR-22

Output

IAC

Output

IAT & IAT V

IAT

Input

IAT2

Input

IAT2 V

Ouput

⁽¹⁾

ILC

Input

IMRC

Output

IMRCM

Input

IMRCM2

Input

⁽¹⁾

IMSC

Output

IMTV

IMT Valve

Output

FUELPW1

INJ-1

Output

FUELPW1

INJ-2

Output

FUELPW1

INJ-3

Output

FUELPW1 Or FUELPW2

INJ-4

Output

FUELPW1 Or FUELPW2

INJ-5

Output

FUELPW2

INJ-6

Output

FUELPW2

INJ-7

Output

FUELPW2

INJ-8

Output

FUELPW2

INJ-9

Output

FUELPW2

INJ-10

Output

⁽¹⁾

KAPWR

Volts

KS1 & KS2

Input

LFC

Output

⁽¹⁾

LFP

Output

MAF & MAF V

MAF

Input

MAP & MAP V

MAP

Input

MFC

Output

MIL

Output

OCTADJ

OCT ADJ

Input

OSS

Input

⁽¹⁾

PATSIL

Output

⁽¹⁾

PATSIN

Input

⁽¹⁾

PATSOUT

Output

⁽¹⁾

PATSTRT

Output

CPP/PNP

PNP

Input

PSP & PSP V

PSP

Input

PTO

Input

SCB

Output

⁽¹⁾

SCC

Output

⁽¹⁾

SCCS

Input

⁽¹⁾

SCMA

Output

⁽¹⁾

SCMB

Output

⁽¹⁾

SCMC

Output

⁽¹⁾

SCVM

Input

⁽¹⁾

SIL

Output

SCICP

Output

SPARKADV

Output

SS1

Output

SS2

Output

SS3

Output

TCC

Output

TCIL

Output

TCS

Input

TFT & TFT V

TFT

Input

⁽¹⁾

THTRC

Output

TMAP

Input

TP & TP V

Input

TPB & TPB V

TPB

Input

⁽¹⁾

TPO

Output

TR & TR V

Input

TSS/ISS

TSS

Input

CAMDCR & RCAM

VCT

Output

VFCDC

Output

VPWR

Input

⁽¹⁾

VREF

Output

⁽¹⁾

VSO

Output

VSS

VSS+

Input

WAC

Output

⁽¹⁾	PID is not available for this circuit. Use DVOM.