No power to 4 fuses; driver's side window, lock, and other controls do not work?

Hi,

I worked backward from the switch. The schematic is 8 pages long, so I focused only on the power supply to the master door switch.

First, at the switch, there should be a red wire with a white tracer. That is a power supply from a circuit breaker located in the interior fuse panel where you are working. This is not a traditional fuse but a circuit breaker. So, start by checking the power to the red/white wire on the switch.

If there is no power (key on), then we need to work backward. The LBEC 2 fuse (number 72) located in the under-hood fuse box is the next location that needs to be checked. Make sure it is good, has power to and from it, and let me know what you find. If it is good, that takes us back to a 175A fuse in the under-hood fuse box. However, if that fuse has failed, there would be several other (not 4) fuses not getting power.

Try working this way to confirm:

1) Power to the switch?
2) Power to the CB in the interior fuse box
3) Power to and from the LBEC 2 (number 72) in the under-hood fuse box
4) The main 175A fuse in the under-hood fuse box.

Once we determine where power is lost, then we can perform other tests to see what is happening.

Here are two links you may find helpful when testing:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-check-wiring

I attached a few pictures below to help. They start at the driver's side switch.

Take care,

Joe

See pics below.