Operation CHARM: Car repair manuals for everyone.
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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Low Pressure Sensor / Switch: Service and Repair

Low Pressure Switch:





Heater/Evaporator Assembly:





- A/C refrigerant system does not need to be discharged to remove or install this component.

- Remove water tray cover at firewall to remove A/C refrigerant low pressure switch.

- Replace O-ring gasket.

- Tightening Torque: 5 Nm (4.0 ft lb).