BE-139 BODY ELECTRICAL SYSTEM – THEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM INSPECTION PROCEDURE 1 Check voltage between terminal TAIL of theft deterrent door lock ECU connector and body ground. LOCK Disconnect P (1) Remove instrument panel. (See BO section) (2) Disconnect the ECU connector. C Measure voltage between terminal TAIL of theft deterrent and door lock ECU connector and body ground. OK Voltage: 10 – 14 V TAIL BE3843 N07482 NG OK Check and replace theft deterrent ECU. Check and repair harness and connector between theft deterrent and door lock ECU taillight control relay (See page IN–30).