Coolant Level Switch Circuit Open (Gas Only)

When Monitored: With the ignition on.

Set Condition: The BCM detects the Coolant Level Sensor Signal voltage is more than 4.8 volts for 5 seconds or more.

Possible Causes are:

Turn ignition off. Disconnect the Coolant Level Sensor harness connector. Turn ignition on. Using the DRBIII(R), read the Coolant Level Sensor status. Connect a jumper wire between the Coolant Level Sense circuit and the Ground circuit. Using the DRBIII(R), monitor the Coolant Level Sensor voltage. Does the DRBIII(R) display 0 volts? If yes, replace the Coolant Level Sensor. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS. If no, go to next step.
Turn ignition off. Disconnect the Coolant Level Sensor harness connector. Measure the resistance between ground and the Coolant Level Sensor Ground circuit. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the Coolant Level Sensor Ground circuit for an open. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
Turn ignition off. Disconnect the Coolant Level Sensor harness connector. Disconnect the BCM C2 harness connector. Measure the resistance of the Coolant Level Sense circuit between the Coolant Level Sensor harness connector and the BCM C2 harness connector. Is the resistance less than 5 ohms? If yes, replace the Body Control Module. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS. If no, repair the Coolant Level Sense circuit for an open. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.