Subject	FYI..Many new vehicles now have a shunt resistor connected
Posted by	Zirvana on September 14, 2006 at 10:42 AM
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Message	to the positive battery post. These resistors are typically 0.001 ohms to 0.0007 ohms and connect between the battery cable and battery post These resistors are 4 terminal devices and the voltage drop is measured from the 2 'sense' terminals on the resistor. The other 2 terminals connect to the battery post and the battery cable. The reason automakers are doing this is because so many parts on the car are going fully electronic (steering, braking, water pump, etc.) and if the battery/alternator starts to fail, the vehicles ECU wants to detect the discharge (change in voltage drop across the shunt resistor) and to start to shut down non critical electronic systems first.
Follow Ups	FYI..Many new vehicles now have a shunt resistor connected - Zirvana 10:42:13 09/14/06 OK, this is applicable to the Z32 in what way? (n/m) - MidLifeZ (DFW) 11:01:07 09/14/06 Could use one on the Z to rig up a little dash idiot light - jzack 11:40:00 09/14/06 There is one on my 2006 Xterra. It even has a small heat - Zirvana 11:47:38 09/14/06 interesting (n/m) - Adam (NoVA) 11:03:18 09/14/06 Re: FYI..Many new vehicles now have a shunt resistor connected - ouikikazz 12:43:00 09/14/06 I agree with you on the throttle. IIRC, Volvo had a recall - MixManMash 13:13:45 09/14/06 Go back to points & condenser ignition? The % of electronics - Zirvana 13:16:34 09/14/06
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