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1.Assemble a gauge manifold on the high pressure service valve.
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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 conditioner switch.
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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.
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- 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 higher than that at the gauge manifold.
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