NANO

680 ELECTRICAL For connector pin details refer below table 1. LOCK: When master actuator moves to lock position it will give lock signal to ECU Pin. No. 2 Then ECU sends a lock pulse on lock Output pin of ECU Pin no. 6 it locks all actuators. 2. UNLOCK: When master actuator moves to unlock position it will give unlock signal to ECU pin No. 2 .then ECU send an unlock pulse on unlock output pin of ecu pin No. 4 it unlocks all actuators Note: same Pin No. 2 is being used for sensing lock/unlock signal for micro controller. 3. For Moving plunger of actuator from “OUT” position to “IN” the pin no. 6 gets connected to +ve supply & pin no. 4 gets connected to –ve supply from the controller. In this condition micro switch contacts “C”& “NO” are closed and “C” & “NC” are open. The above polarities and micro switch contacts get reversed for the return stroke from “IN” to “OUT”. PRELIMINARYCHECKS Carry out the following preliminary checks as per given order before starting the repairs. • Check fuse. Replace blown fuse, if any. • Check battery condition and state of charge. Recharge or replace battery as required. • Check all related electrical connections including earth connection for cleanliness and proper gripping. Check specially the control unit earth connection. Rectify as required. • Operate driver’s side door lock from inside and outside and check functioning of central locking system. Locate the faulty unit and carry out repairs as given in subsequent paras. • If the central locking system is found inoperative in total, check for the power supply at control box input end. If this is OK, remove the control unit and check for proper functioning on the rig. PIN NO. SIGNAL DESCRIPTION ACTIVE LEVEL INPUT/OUTPUT 1 Not used - - 2 Lock/Unlock feedback Active Low/High I/P 3 Battery Negative +0 v I/P 4 Unlock Output +12 v Pluse O/P 5 Battery Positive +12 v I/P 6 Lock Output +12 v Pluse O/P