Refrigerant Pressure Sensor / Switch: Testing and Inspection

SIMPLE INSPECTION OF THE A/C PRESSURE SENSOR

1. Assemble a gauge manifold on the high pressure service valve.







2. Disconnect the A/C pressure sensor connector and connect special tool test harness MB991658 as shown in the illustration.
3. Turn ON the engine and then turn ON the air conditioner switch.










4. At this time, check to see that the voltage of A/C pressure sensor terminal No. 2 reflects the specifications of the figure.

NOTE: The allowance shall be defined as ± 5%.