Coolant Level Indicator Lamp: Description and Operation

Low Coolant Level Warning Light

The Instrument Cluster (Z142) receives battery voltage through the Low Coolant Level Switch (X144) with the Ignition Switch (X134) in position II and the engine coolant level OK. If the engine coolant level is low, the Low Coolant Level Switch (X144) opens. removing voltage from the Instrument Cluster. The Instrument Cluster then lights the low coolant level warning light. The Warning Lamps Check Unit (Z161) applies ground to the warning light momentarily as a bulb check when the Ignition Switch (X134) is moved to position II.