Cherokee 2WD L4-150 2.5L VIN P MFI (1991)
Emissions Maintenance Light: Description and Operation
This output device is located in the instrument panel, and its purpose is to inform the driver that the vehicle requires scheduled maintenance for certain
emission system components. The SBEC II illuminates this lamp at certain mileage intervals. The controller keeps track of the vehicle mileage by
monitoring the vehicle distance (speed) sensor. The EMR Lamp illuminates at 82,500 mi.
The EMR Lamp can ONLY be reset through the use of a SCAN TOOL. If the engine controller is replaced, the current vehicle mileage needs to be
stored into the EMR memory. For more instruction refer to Powertrain Management/Computers and Control Systems/Testing and
Inspection/Procedures.
