Pressure-reduce Test

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.