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 ...

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Description and operation
Trip computer A mini trip computer is available on this model to provide several electronic functions and features. The trip computer contains a central processing unit and interfaces with other modules in the vehicle on the Chrysler Collision Detection (CCD) data bus network. The CCD data bu ...