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Home >> Jeep >> 2014 >> Compass Limited, AWD, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 147 (Electronic Control Modules (Service Information)) >> Module, Powertrain Control, 2.8L Diesel >> Operation >> Operation >> Pcm Operating Modes >> Ignition Switch On (Engine Off)

Ignition Switch On (Engine Off)

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition is turned on, the PCM activates the glow plug relay for a time period that is determined by engine coolant temperature, atmospheric temperature and battery voltage.

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