Turn the ignition switch ON or engine idle.
Check that the water sensor lamp.
Specification: About 2 second
Without presence of water, the lamp should flash for 2 seconds and turn off afterward in order that this system has normal condition.
Turn the ignition switch OFF, and then remove battery negative (-) terminal.
Remove the water sensor.
(Refer to Delivery System - "Water Sensor")
Reconnect the water sensor connector and sensor.
Turn the ignition switch ON.
Ground the sening pin at chassis ground.
Specification: Sensor lamp "ON"