DR-1D Brake Switch Input Circuit to Logic Module

1. Turn ignition switch Off, then disconnect blue connector from logic module.
2. Connect a voltmeter to cavity 13 and ground.
3. Turn ignition switch to Run position, then depress brake pedal.
4. If voltmeter reads within 1 volt of battery voltage, replace logic module.
CAUTION: Before replacing the logic module check terminal in cavity No. 13 of the blue connector to make sure it is not crushed causing a poor connection.
5. If voltmeter reading is not within 1 volt of battery voltage, check for open circuit in wire of cavity 13 to brake switch, defective brake switch or open circuit to brake switch.