COAST Circuit Test
With ignition on, connect voltmeter between ground and circuit No. 151 (Light Blue/Black wire) of amplifier connector. Press ON switch, then press and hold COAST button. Voltmeter should indicate approximately 1.5 volts. If all functions are okay, perform SERVO TEST and SPEED SENSOR TEST, and substitute a known good amplifier.
NOTE:
DO NOT
substitute a new amplifier until actuator coils in servo have been tested. See SERVO TEST.