D 150 Pickup V6-239 3.9L (1992)
EGR Maintenance Light: Description and Operation
DESCRIPTION
All models are equipped with an Emission Maintenance Reminder (EMR) light. The EMR lamp illuminates at approximately 133,000 km (82,500
miles). The EMR informs the owner when oxygen sensor (02 sensor) and other scheduled emission maintenance is required. The indicator light is
located in the instrument cluster.
OPERATION
The EMR system is incorporated into the engine controller. The engine controller records the vehicles mileage and stores it into memory every 8
miles. At that time, the engine controller checks for the 60,000, 82,500, and 120,000 mileage trip points. When the current mileage matches one of
the above mentioned trip points, the EMR light is activated.
The following parts are to be replaced at either the indicated mileage, or when the EMR light remains on when the key is in the ON position. After
performing the required maintenance, the EMR light must be reset to turn the light off.
96,000 km (60,000 miles):
^
Replace EGR Valve
^
Clean EGR passage
^
Replace PCV Valve
132,000 km (82,500 miles):
^
Replace Oxygen Sensor
192,000 km (120,000 miles):
^
Replace EGR Valve
^
Clean EGR passage
^
Replace PCV Valve
LIABILITY
Failure to perform the required maintenance and only reset the EMR light, may be a violation of federal law. Only after performing the required
maintenance should the EMR light be reset.
RESETTING EMR LIGHT
1.
Connect DRB II (or equivalent) scantool to the diagnostic connector.
2.
Follow the scantool manufacturers instructions to reset EMR Light.
