8484081

1.

Connect scan tool with 'DATA LINK CONNECTOR' (DLC).

2.

Warm engine up to normal operating temperature.

3.

Turn all the electrical devices including air conditioner OFF.

4.

Monitor "A/C ON SIGNAL SWITCH" and "A/C PRESSURE SENSOR" parameter on the scan tool.

Reference value :

A/C switch "ON" : A/C RELAY "ON" (A/C compressor turns ON and OFF periodically by A/C pressure S/W. )

A/C switch "OFF" : A/C RELAY "OFF"

Fig.1) The operating condition of A/C relay is shown.

☞ Check if A/C compressor works properly when A/C switch is turning ON.

☞ Diagnosing problem of "A/C RELAY" and "A/C COMPRESSOR" is convenient through ACTUATION TEST on the scan tool.