Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Refrigerant Pressure Sensor / Switch: Testing and Inspection

APT (A/C PRESSURE TRANSDUCER)

INSPECTION




1. Measure the pressure of high pressure line by measuring voltage output between No. 1 and No. 2 terminals.
2. Inspect the voltage value whether it is sufficient to be regular value or not.

Voltage = 0.00878835* Pa + 0.37081095

3. If the measured voltage value is not specification, replace the A/C pressure transducer.