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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Power Steering Pressure Switch: Description and Operation

Power Steering Pressure Switch:

PURPOSE/OPERATION
The power steering oil pressure switch senses the power steering load and sends a low/high voltage signal to the engine control module, which then controls the idle speed control motor based on this signal. The engine control module uses this information for idle speed control. When pump output pressure exceeds a preset level, the switch closes, completing the circuit to ground.