Medallion L4-2165cc 2.2L (1988)
Technical Service Bulletin # 185288
Date: 880620
ECU - Replacement
Models
1988 Eagle Medallion With Manual Transmission
Subject
ECU Replacement
Index
DRIVEABILITY
Date
June 20, 1988
No.
18-52-88
P-2483
(C18-54)
Symptom/Condition, Diagnosis & Parts Information
SYMPTOM/CONDITION
1988 Model ECU replaced by a 1989 Model ECU (PN T0741580).
DIAGNOSIS
Perform "Vehicle Test" and "State Display" tests with MS 1700 Electronic Diagnostic Tester, as well as a visual inspection EFI system components. If
thorough diagnostic testing in that no other EFI system abnormalities exist, and ECU replacement is required, then you must perform the following repair
procedure.
PARTS REQUIRED
ECU
PN T0741580 (7700 741 580)
1/8 inch diameter heat-shrink tubing.
Repair Procedure
IMPORTANT WARNING: BEFORE INSTALLING THIS ECU (PN T0741580) ON ANY 1988 MODEL YEAR MEDALLION EQUIPPED WITH
MANUAL TRANSMISSION, THE ECU WIRING MODIFICATIONS MUST FIRST BE PERFORMED. IN ADDITION,
THE INSTRUCTIONS RELATING TO THE REMOVAL OF THE OXYGEN SENSOR MODULE MUST ALSO BE
COMPLIED WITH FOR VEHICLES SO EQUIPPED.
FAILURE TO COMPLY WITH THESE IMPORTANT INSTRUCTIONS MAY RESULT IN SERIOUS
MALFUNCTIONS IN ENGINE OPERATION UNDER CERTAIN CONDITIONS, INCLUDING CONTINUED
ENGINE OPERATION AFTER TURNING THE IGNITION KEY TO THE "OFF" POSITION.
