Coolant Level Indicator Lamp: Description and Operation

The Low Coolant Switch is located in the coolant surge tank. The IPC contains the Low Coolant Indicator. The IPC lights this telltale when commanded to by the PCM. If the coolant level in the surge tank is low, the low coolant indicator will turn on and will remain on until the Ignition Switch is turned off or the coolant level in the surge tank is restored to a normal level. For a Bulb Check procedure, the IPC will light this telltale for 3 seconds when the IPC is initially powered up (ignition in "OFF/UNLOCK," "RUN," or "CRANK" positions) regardless of the serial data signal.