DR-23A Engine Coolant Temperature Sensor

This test must be performed with engine warm.

1. Connect diagnostic read-out tool to engine test connector.
2. Place system in Sensor Test Mode 04. Multiply reading on display by ten for actual reading.
3. If reading shows between 180°---250°F, proceed to Test 23 step B.
4. If reading is not between 180°---250°F, replace coolant sensor.