High Pressure Sensor (G65)

High Pressure Sensor (G65)

• After the A/C compressor is switched off in this vehicle, it may take a relatively long time for the pressure on the high pressure side to decrease (the expansion valve(s) is/are cold, the pressure on the low pressure side increases quickly after deactivation, the expansion valve(s) closes/close and the refrigerant can only flow slowly to the low pressure side).

- Remove plenum chamber cover.

- Remove right section of plenum chamber front wall - A -.






• Right section of plenum chamber front wall - A - is secured to vehicle by bolts - C - and - D -. A seal - E - is installed between plenum chamber front wall and vehicle body.

- Disconnect the connector - A -.






- Remove the high pressure sensor - B - (tightening specification: 5 Nm).

- Replace the O-ring - C -. Refer to => [ Refrigerant Circuit O-Rings ] Refrigerant Circuit O-Rings and to the Electronic Parts Catalog.

• Cooling performance cannot be checked with high pressure sensor removed, Climatronic Control Module (J255) does not switch on the compressor.

• The refrigerant circuit remains closed, connection with valve.

• Checking function of high pressure sensor and signal sent, refer to => [ High Pressure Sensor, Checking Pressure Signal ] High Pressure Sensor (G65), Checking Pressure Signal.

• Coat O-ring seal - C - lightly with refrigerant oil before installing, refer to => [ Refrigerant Circuit O-Rings ] Refrigerant Circuit O-Rings.