2011 Nissan Xterra Owner's Manual - Page 271

VARIABLE VOLTAGE CONTROL SYSTEM Your vehicle is equipped with a variable voltage control system. This system measures the amount of electrical discharge from the battery and controls voltage generated by the generator. The current sensor A is located near the battery along the negative battery cable. If you add electrical accessories to your vehicle, be sure to ground them to a suitable body ground such as the frame or engine block area. DRIVE BELT LDI0454 WDI0639 CAUTION ● Do not ground accessories directly to the battery terminal. Doing so will bypass the variable voltage control system and the vehicle battery may not charge completely. ● Use electrical accessories with the engine running to avoid discharging the vehicle battery. 1. 2. 3. 4. 5. 6. Power steering fluid pump Automatic belt tensioner Cooling fan Air conditioner compressor Crankshaft pulley Generator WARNING Be sure the ignition key is in the OFF or LOCK position before servicing drive belt. The engine could rotate unexpectedly. 8-16 Maintenance and do-it-yourself