Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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A/C Pressure Sensor

Used by the fuel injection ECU:
When the AC compressor is in operation, an electrical signal is sent from the pressure sensor (located on the receiver/dryer at passenger side fire-wall) to the ECU.
When the A/C system pressure is low, the pressure sensor will come on (A/C compressor turns on) and send a signal to the ECU. If the pressure is sufficient for the A/C system to operate without the compressor, the pressure sensor will stay off and no signal is sent to the ECU.