Jeep Cherokee (XJ): On-board diagnostics

Next pageEmission system. Malfunction indicator lamp (mil). State display test mode

Emission system OPERATION The Powertrain Control Module (PCM) monitors many different circuits in the fuel injection, ignition, emission and engine systems. If the PCM senses a problem with a moni ...

Other materials:

Engine block heater
The engine block heater warms the engine and permits quicker starts in cold weather. Connect the cord to a 110-115 Volt AC electrical outlet with a grounded, three-wire extension cord. For ambient temperatures below 0F (-18C), the engine block heater is recommended. For ambient temperatures ...