Pressure-reduce Test
WARNING: This page is about a different car, the 1991 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
This test activates selected wheel circuit valves in the modulator valve by placing valve in pressure-reduce position. Valve action can be verified by checking appropriate wheel for braking action. The TECH 1 will indicate whether valve operated correctly. To perform pressure reduce test, raise and support vehicle. Depress brake pedal. Use TECH 1 to command the PRESSURE REDUCE mode. Try to spin the wheel being tested. Wheel should spin if solenoid valve reduces pressure.