Emissions Maintenance Light: Service and Repair

Fig. 2 Emission maintenance reminder lamp system.:

This lamp will be illuminated after approximately 60,000 miles of operation, Fig. 2. The amber lens lamp is located on the instrument panel and has the word Emissions, Emiss or EGR printed on it. On 1988 Ranger models with 4-122/2.0L engine, the lamp lens will indicate Check Engine. 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 Aerostar models, the module is located under the instrument panel near the bulkhead connector. On Bronco and F Series, the module is attached to the instrument to the left of the steering column. On Bronco II and Ranger models, the module is located on the righthand side of the instrument panel below the glove compartment. 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.