Emission Maintenance Warning Module - Service

89Ford33

Article No. 89-22-8
^ EMISSION MAINTENANCE WARNING MODULE SERVICE INFORMATION

^ LAMP - "EMISSIONS/CHECK ENGINE" - EMISSION MAINTENANCE WARNING MODULE - SERVICE INFORMATION
LIGHT TRUCK: 1985-89 BRONCO 1985-87 BRONCO II 1985-89 ECONOLINE, F-150, F-250, F-350 1985-88 RANGER 1986-87 AEROSTAR

MEDIUM/HEAVY TRUCK: 1988-90 F & B SERIES

ISSUE: The Emission Maintenance Warning "EMW" module operates a light that is located on the instrument panel. For 1985-87 model year vehicles, the light will display the word "EMISSIONS". For 1988-89 model year vehicles, the light will display the words "CHECK ENGINE". When the light is lit, it is indicating that the 60,000 mile emission maintenance should be performed. After the maintenance is performed the EMW module must be reset to zero time. Another type of module is the "IMS" module. This module is not part of the light circuit and does not require maintenance. At a predetermined time, the IMS module directs the EEC IV processor to make a strategy change. A third type of module is the "COMBO" module. This module combines the functions of the IMS and the EMW modules.

ACTION: Refer to the following module application charts for the specific vehicle application and location of the different types of modules.

NOTE: FOR APPLICATIONS NOT LOSTED IN THE FOLLOWING MODULE APPLICATION CHARTS, THE "CHECK ENGINE" LIGHT IS CONTROLLED BY THE EEC IV PROCESSOR. THESE VEHICLES DO NOT USE THE "EMW" MODULE.




1985 & 1986 MODULE APPLICATION CHART



1987 MODULE APPLICATION CHART



1988 MODULE APPLICATION CHART



1989 MODULE APPLICATION CHART



1990 MODULE APPLICATION CHART
PART NUMBER PART NAME CLASS

E5TZ-12B514-C EMW Module - 1000 Hr BM
E5TZ-12B514-A EMW Module - 2000 Hr AM
E7TZ-12B514-A COMBO Module BM

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 2300, 2500