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Home >> Audi >> 2002 >> S6 4.2 U >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> On Board Diagnostic (OBD) - Suspension & Tire Pressure Monitoring >> Four-wheel pneumatic suspension system, function >> Suspension strut valves -N148-, -N149-, -N150-, -N151-

Suspension strut valves -N148-, -N149-, -N150-, -N151-

The suspension-strut valves (also referred to as transverse check valves) permit raising and lowering of the vehicle.

The suspension-strut valves are activated by the self leveling suspension system control module. The valves are grouped together in a solenoid valve block.

These valves take the form of 2/2 way directional valves and are of the normally closed (NC) type.