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Home >> Jeep >> 2006 >> Commander Base, 3.7 K, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 179 (Electronic Control Modules (Service Information)) >> MODULE, Powertrain Control >> Description >> Ignition Circuit Sense

Ignition Circuit Sense

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

This circuit ties the ignition switch to the Powertrain Control Module (PCM). Battery voltage is supplied to the PCM through the ignition switch when the ignition is in the Run or Start position. This is referred to as the "ignition sense" circuit and is used to "wake up" the PCM.

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