Post by
philipa_240sx »
https://forums.nicoclub.com/philipa-240sx-u68765.html
Sun Mar 30, 2008 2:18 am
The IPDM (Integrated Power Distribution Module) is a CPU that controls many of the devices in the car including the starter, headlights, wipers, etc. If this fails, you likely cannot start the car or control these devices.
A few years ago, many car mfg's started switched to a networked system of wiring as opposed to running individual wires. Imagine if your computer had to be individually wired to every website in the world, you see how impossible this is. With the network system (Referred to as CAN BUS), the switch sends a command to the IPDM which in turn energizes the relay to power the device.