BE–136 BODY ELECTRICAL SYSTEM – THEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM Headlight Control Relay Circuit CIRCUIT DESCRIPTION When the theft deterrent system is activated, it causes the Tr in the ECU to switch on and off at approximately 0.2 sec. intervals. This switches the headlight control relay on and off, thus flashing the headlights (See the wiring diagram below). In this condition, if any of the following operations is done, the Tr in the ECU goes off and the headlight control relay switches off, thus stopping the headlights flashing: (1) The front LH or RH door is unlocked with a key. (2) The ignition switch is turned to ACC or ON position. (3) Approximately 1 minute elapses. WIRING DIAGRAM T9 Theft Deterrent and Door Lock ECU R/B No.2 Headlight Relay 2A 4 3 2 FL MAIN 2 1 2 R-Y 13 IB2 R-Y R-Y 16 HEAD IF2 R-Y 10 R Light Control Switch B 2 R/B No.2 HEAD (LH)*1 HEAD (LH-LWR)*2 2 R/B No.2 HEAD (RH)*1 HEAD (RH-LWR)*2 Battery 2 2 R-G 1 W-B W-B EA 2 2 R-B 1 *1: USA Models *2: CANADA Models N0854B