Check Gauges Lamp

The Check Gauges Lamp lights when either the engine oil pressure is low or the engine coolant temperature is high. The Instrument Cluster's Check Gauges Lamp Driver solid state logic monitors the input signals to the Oil Gauge and the Temp Gauge. With the Ignition Switch in RUN or START, the Check Gauges Lamp Driver grounds the Check Gauges lamp when either of the input signals exceeds its setpoint. This causes the lamp to light. The lamp is normally illuminated when the Ignition Switch is placed in RUN. It extinguishes when the engine is started and oil pressure increases above setpoint.