"COAST" Circuit Test

With ignition "ON" and voltmeter connected to light blue-black hash wire at amplifier six-way connector, depress the "ON" switch and hold "COAST" button down on steering wheel. Voltmeter should indicate about 6 volts. If all functions check good, perform SERVO ASSEMBLY TEST  and SPEED SENSOR TEST . Insert a known good amplifier and recheck system if necessary.

See SERVO ASSEMBLY TEST .