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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Power Steering Pump

Power steering (P/S) pump specification Hydraulic pressure control Relieved pressure 7850 kPa
Control device Flow control valve and relief valve
Power steering pressure switch Switch turns on (closes) whel the pressure is higher than 2500-3500 kPa
ECM uses this signal for idle speed control.