Wireless Door Lock Control Tuner Circuit
Ensure ignition is off. Disconnect 8-pin tuner connector. See Fig 1. Measure continuity between connector terminal No. 5 and ground. Continuity should be present. Measure voltage between connector terminal No. 8 and ground. Voltage should toggle between 0-5 volts. If continuity and voltages are not to specification, check wiring for an open or short circuit. See WIRING DIAGRAMS .