Jeep Cherokee (XJ): Engine

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Power grounds. Power steering pressure switch- pcm input. Sensor return-pcm input
Power grounds OPERATION The Powertrain Control Module (PCM) has 2 main grounds. Both of these grounds are referred to as power grounds. All of the high-current, noisy, electrical devices are connected to these grounds as well as all of the sensor returns. The sensor return comes into the senso ...