Emissions Maintenance Light: Description and Operation

This Emission Maintenance Reminder System is incorporated into the engine controller. The controller stores vehicle mileage into its memory every 8 miles, then at 60,000, 82,500 or 120,000 miles it will illuminate the Emission Maintenance Reminder (EMR) lamp. When the indicated mileage is reached or the EMR lamp is on at all times, the following parts must be replaced and the EMR lamp reset. After necessary emission maintenance has been performed, connect Diagnosis Read-Out Box II (DRB II) to the on-board diagnosis connector. Follow instructions indicated by DRB II tool.

1. At 60,00 miles, proceed as follows:
a. Replace EGR valve.
b. Clean EGR passage.
c. Replace PCV valve.
2. At 82,500 miles, proceed as follows:
a. Replace oxygen sensor.
3. At 120,000 miles, proceed as follows:
a. Replace EGR valve.
b. Clean EGR passage.
c. Replace PCV valve.