EMW / IMS Module (see the application chart in the TSB below)
Certain diesels use a different warning module here.
IF THE IMAGE IS TOO SMALL, click it.
The alternator bulb resistor is 510 Ohms (~350 thru the bulb & resistor). Note that this film circuit includes an identical resistor, but the plastic for the ALT socket is thicker, requiring the special bulb holder.
.
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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" (Inferred Mileage Sensor) 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
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RESET PROCEDURE
1. Turn ignition key switch to Off position
2. Lightly push a Phillips screwdriver through the 0.2 inch diameter hole with the sticker labeled "RESET" and lightly press down and hold. Go to Step 3
3. With the screwdriver still pressing down, turn ignition switch to the RUN position. The EMW lamp will then light and should remain lighted for as long as screwdriver is pressed down. Hold the screwdriver down for 5 seconds. Go to Step 4.
4. Remove the screwdriver The lamp should go out in 2 to 5 seconds indicating a reset has occurred.. If not, start over at step 1. Turn the ignition switch to OFF and go to step 5.
5. Turn the ignition to the RUN position. EMW Lamp should go off in 2 to 5 seconds. If not, repeat the procedure.
If the module has no reset hole, replaced the module. (Service replacement modules have never been available from any source. Disconnect, remove, and discard the module.)
