A regulated braking arrangement includes left and right sensors to provide wheel velocity signals, and a solenoid for dumping brake line pressure to prevent wheel lock-up. This arrangement is governed by a control system. An analyzer for checking the control system includes a sensor resistance test circuit for determining whether the left and right sensor resistances are between acceptable upper and lower limit values. A composite circuit tests the solenoid, both for acceptable resistance and for effective operation under low voltage. A wheel velocity signal circuit provides an artificial wheel velocity signal for passage through a wheel select gate circuit to the sensors in the control system. A deceleration function generator operates, through the wheel select gate circuit, to simulate a rapid deceleration to test the operability of the control system. A mechanical logic switch passes signals from a wheel select switching circuit to the wheel select gate circuit; this switch facilitates testing of different control systems, whether selecthigh, select-low, or wheel-by-wheel systems.