Temperature Dial Calibration

Before making tests, calibrate dial to insure accuracy as follows: Remove connector containing leads to In-car Sensor (Black with single light green stripe and Light Green wire), connect tester temperature dial lead assembly (green lead) to lead assembly removed from in-car sensor. Set control head temperature dial at 75, then set tester as follows: Manual Control - 50, Switch S-2 - Automatic, Switch S-1 - Cal. Readjust control head temperature dial until the temperature dial Cal. centers itself on the meter.