1. Assemble a gauge manifold on the high pressure service valve.
2. Disconnect the A/C pressure sensor connector and connect the special tool test harness (MB991658) as shown.
3. Start the engine and then turn ON the air conditioning switch.
4. At this time, check to see that the voltage of the A/C pressure sensor connector terminal No. 2 reflects the specifications of the figure.| note | - The allowance shall be defined as ±5%.
- The A/C pressure sensor is incorporated in the discharge flexible hose, and the high-pressure service valve is incorporated in liquid pipe B. Therefore, the pressure at the A/C pressure sensor is 0.1 to 0.3 MPa (15 to 44 psi) higher than that at the gauge manifold.
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