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 A/C 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%.