Low Coolant Indicator

The Low Coolant Level Indicator only illuminates to warn the operator when the surge tank has a low coolant level. Battery voltage is applied to the Low Coolant Level Indicator Module from pin 25 of the I/P Cluster through CKT 68 (YEL/BLK) when the ignition switch is in the RUN or START positions. The Low Coolant Level Indicator Module monitors the resistance of the Low Coolant Level Sensor. The level sensor has a high resistance of 50,000 ohms or more when the coolant level is low. This is the set point at which the Low Coolant Level Indicator Module grounds CKT 68 (YEL/BLK) in order to illuminate the low coolant lamp.