Jeep Cherokee (XJ): Heating and air conditioning

Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Heating and air conditioning

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Emissions inspection and maintenance programs
In some localities, it may be a legal requirement to pass an inspection of your vehicle's emissions control system. Failure to pass could prevent vehicle registration. For states that require an Inspection and Maintenance (I/M), this check verifies the "Malfunction Indicator Light (MIL)" is ...