O' my. I've done both and more, for sure, I never saw anything like your picture. It must be the cameraman. ZC1
We have a winner!!! There are actually 3 pipes in the picture which was taken with the camera right under the wheel arch, that is why I had to cover the flash. On the far left of shot is the fuel filler pipe and centre and right are 2 vent pipes. The caked on dirt look is actually sound deadening material appied by Toyota although there are some brown spots of dirt from a recent trip. I put some lines on this picture to make it easier to see.
ok. major and possibly dangerous disassembly required. you likely have not seen this in person. 2 good clues to start off, have a shot.
Location: Interior of brake control power supply unit, located near the 12V auxiliary battery in the right-rear hatch floor Purpose: Electrolytic capacitors storing emergency power for brake system in the event of a 12V bus power failure
Now I won't need to electrocute myself pulling that apart to see what is in it. If it is an emergency brake power supply and the brake servo is in the front of the car why is this unit in the back? Sorry I know this is off topic.
OK, here's a photo out of my archives... What is the location and purpose of the cutout in the center of the photo.
pat: DH says "beats the $%#^ out of me!" patrick: under windshield wiper cowling cover allows water to drain
Fuel filler hose inside the fuel tank from the subtank along side the bladder to the plate shown on the left of shot which allows the filler pipe to go through the steel outer housing of the tank.
location is correct. purpose is almost correct. technically, this particular line does not connect to the charcoal canister. geez, i hope this was at least sorta hard. have our fuel tank dissection photos made it that far around the world, or has someone else done it?
According to what literature I can find, the unit is not exactly the brake control power supply unit as stated by Pat but the "power source BACKUP unit." Unless it serves a dual purpose, it doesn't supply power to the brake control unit during normal operation. Of course, it's location is the same place as Pat mentioned. In the '04 & later Prius, the power source backup unit has been adopted as an auxiliary power source in order to supply power to the brake in a stable manner. This unit contains 28 capacitor cells, which store an electrical charge provided by the (12V) vehicle power supply. When the voltage of the (12V) vehicle power supply drops, the electrical charge stored in the capacitor cells is used as an auxiliary power supply to the brake system. The electrical charge stored in the capacitor cells becomes discharged when the HV system stops operating after the power switch is turned OFF. ZC1
