Jeep Cherokee (XJ): Special tools

COMPASS

COMPASS

    Previous pageRemoval and installation

    Overhead console (1) Disconnect and isolate the battery negative cable. (2) Remove the two screws located forward of the display module that secure the overhead console to the upper windshield o ...

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    Other materials:

    Powertrain control module (PCM)
    DESCRIPTION The Powertrain Control Module (PCM) is located in the engine compartment (Fig. 1). The PCM is referred to as JTEC. OPERATION The PCM operates the fuel system. The PCM is a pre-programmed, triple microprocessor digital computer. It regulates ignition timing, air-fuel ratio, emis ...