Wiper Amplifier Circuit Check

With ignition switch in ACC position, turn wiper switch to INT or OFF position. With an analog voltmeter, measure voltage between BCM terminals No. 11 and 29. See Figure. With wiper switch in OFF position, meter should read battery voltage. With switch in INT position, pointer should swing from zero to 12 volts every 2 to 21 seconds. If values are correct, go to next step. If values are not correct, check wiper amplifier. See WIPER AMPLIFIER. If wiper amplifier is okay, check amplifier circuit. If amplifier is not okay, replace wiper amplifier.