Temperature Sensing Equipment

Correct climate control diagnosis requires an accurate and reliable temperature sensing device. A high quality analog thermometer or a digital pyrometer is recommended.

TYPICAL USE: A/C PERFORMANCE QUICK CHECK

Test conditions = 90 °F & 50% Humidity

- Note ambient temperature.
- Close all windows and doors.
- Engine speed = 1500 RPM.
- Blower speed = Medium.
- Temperature selector Maximum cooling.
- "Snowflake" button = A/C On.
- Let the engine run for approximately five minutes to stabilize the A/C system.







Expected result for a properly functioning system:
- Center vent discharge temperature = > 20 °F less than the ambient temperature.

DIS TEMPERATURE PROBE







The Diagnosis and Information System (DIS) tester is equipped with a temperature sensor cable, stored in the compartment at the rear of the tester. It can be used to measure the temperatures of liquids and gasses from -20° to +200 °C.

To use the DIS as a thermometer:
- Push "Measurement System" button on the DIS start screen..
- Push "Temperature C" button on the "Measuring System Multimeter" screen,

COOLING / HEAT GUN





To simulate testing temperatures, use the approved "Heating/Cooling Gun Kit."

Reference TSB 04 14 89.