Escort L4-98 1.6L SOHC VIN 5 FI (1985)
Technical Service Bulletin # 872110
Date: 871021
TFI Module/PIP Sensor - New Diagnostic Procedure
EEC IV - TFI MODULE AND PIP SENSOR -
Article No.
NEW DIAGNOSTIC PROCEDURE
87-21-10
FORD:
1983-88 ESCORT/EXP, MUSTANG, THUNDERBIRD, FORD 1984-88 TEMPO 1986-88 TAURUS
LINCOLN-MERCURY:
1983 MARK VI
1983-86 CAPRI 1983-87 LYNX 1983-88 COUGAR, MERCURY, CONTINENTAL, LINCOLN TOWN CAR
1984-88 TOPAZ, MARK VII 1986-88 SABLE
MERKUR:
1985-88 XR4Ti 1988 SCORPIO
LIGHT TRUCK:
1983-88 ALL LIGHT TRUCK LINES
ISSUE:
A new diagnostic procedure for testing the TFI module and PIP sensor has been developed. This new procedure allows the technician to take
a direct path when testing the TFI module and PIP sensor with the use of the new TFI IV diagnostic tester (Rotunda No. 105-00003).
ACTION:
If service is required, use the diagnostic procedures on pages 29 through 60 of this TSB. Insert these pages in the
Engine/Emission Diagnosis Manual, Volume H, Section 15.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"
Preliminary Checkout, Equipment & Notes
CHECKOUT
^
Visually inspect the engine compartment to ensure all vacuum hoses and spark plug wires are properly routed and securely connected.
^
Examine all wiring harnesses and connectors for insulation damage, burned, overheated, loose or broken conditions.
^
Check that the TFI module is securely fastened to the distributor base.
^
Be certain the battery is fully charged.
^
All accessories should be off during diagnosis.
EQUIPMENT
Obtain the following test equipment or an equivalent:
^
Spark Tester, Special Service Tool D81P-6666-A. See note.
^
Volt/Ohm Meter Rotunda 014-00407.
^
12 Volt Test Light.
^
Small straight pin.
^
Remote Starter Switch.
^
TFI Ignition Tester, Rotunda 105-00002.
NOTES
^
A spark plug with a broken side electrode is not sufficient to check for spark and may lead to incorrect results.
^
When instructed to inspect a wiring harness, both a visual inspection and a continuity test should be performed.
^
When making measurements on a wiring harness or connector, it is good practice to wiggle the wires while measuring.
^
References to pin-in-line connector apply to a shorting bar type connector used to set base timing.
^
This procedure is intended to identify faulty components or wiring while the fault is present. If the complaint is of an intermittent condition, refer
to Intermittent Diagnosis.
