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EMW/IMS(EUL) COMBO module, found on the back of the instrument cluster in '87-89 V8s.

Emissions Maintenance Warning / Inferred Mileage Sensor
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Haynes contains a typo in some editions describing this as the "Infrared" Mileage Sensor, and wiring diagram errors showing it connected to the oil pressure switch. In any case, it serves no real purpose. Ford never offerred the service indicated by this module; certainly not now. Either remove the bulb, the module, or both.
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Maintenance Required Lamp/Indicator: Description and Operation
NOTE: This lamp is used only on models with Federal emissions systems.

The lamp will be illuminated after approximately 60,000 miles of operation. The amber lens is located on the instrument panel and has the word Emissions, Emiss or EGR printed on it. After performing the required emission control maintenance, the module must be replaced or reset, depending on type of module used. On modules equipped with reset feature, reset the module as follows:

1. Place ignition switch in the Off position.
2. On Bronco and F-Series, the module is attached to the instrument cluster to the left of the steering column. On E Series models, the module is located under the lefthand side of the instrument panel.
3. On all models, insert a suitable Phillips head screwdriver through .2 inch diameter hole located on module near the reset sticker and lightly press down and hold.
4. While still lightly pressing down on screwdriver, turn ignition switch to Run position. The emissions maintenance lamp should remain illuminated for as long as the screwdriver is pressing down. Hold screwdriver in position for approximately five seconds.
5. Remove screwdriver, lamp should go out after approximately two to five seconds, indicating the module has been reset. If lamp fails to go out, repeat reset procedure. Place ignition switch in the Off position.
6. Turn ignition switch to Run position and check to ensure emission maintenance lamp is illuminated for two to five seconds. After approximately two to five seconds the lamp should turn off.
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TSB 89-22-08 EMW/IMS Applications

Publication Date: NOVEMBER 1, 1989

LIGHT TRUCK: 1985-89 BRONCO
1985-87 BRONCO II
1985-89 ECONOLINE, E-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 LISTED 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
APPLICATION ENGINE MODULE TYPE MODULE LOCATION SERVICE PART NUMBER
Aerostar - All - EMW - Left Of Steering Column On EEC IV Bracket - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
Ranger, Bronco II - All - EMW - Behind The Glove Box - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
Econoline, Bronco, F-Series - All - EMW - Bottom Of IP Left Of Steering Column - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)

1987 MODULE APPLICATION CHART
APPLICATION ENGINE MODULE TYPE MODULE LOCATION SERVICE PART NUMBER
Aerostar - All - EMW - EEC IV Bracket - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
Ranger, Bronco II - All - EMW - Behind The Glove Box E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
Econoline, Bronco, F-Series - All - COMBO - Bottom Of IP Left Of Steering Column - E7TZ-12B514-A

1988 MODULE APPLICATION CHART
APPLICATION ENGINE MODULE TYPE MODULE LOCATION SERVICE PART NUMBER
Ranger - 2.0L - EMW - Behind The Glove Box - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
F & B Series - 6.1L & 7.0L - EMW - Mounted in the IP - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
Econoline, Bronco, F-Series - 5.8L - COMBO - Bottom Of IP Left Of Steering Column - E7TZ-12B514-A

1989 MODULE APPLICATION CHART
APPLICATION ENGINE MODULE TYPE MODULE LOCATION SERVICE PART NUMBER
F & B Series - 6.1L & 7.0L - EMW - Mounted in the IP - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)
Econoline, Bronco, F-Series - 5.8L - COMBO Bottom Of IP Left Of Steering Column - E7TZ-12B514-A

1990 MODULE APPLICATION CHART
APPLICATION ENGINE MODULE TYPE MODULE LOCATION SERVICE PART NUMBER
F & B Series - 6.1L & 7.0L - EMW - Mounted in the IP - E5TZ-12B514-C (1000 Hr) or E5TZ-12B514-A (2000 Hr)


PART NUMBER PART NAME
E5TZ-12B514-C EMW Module - 1000 Hr
E5TZ-12B514-A EMW Module - 2000 Hr
E5TZ-12B514-A COMBO Module

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY