front front - rear rear.
You bleed the rear brakes the same way you bleed the front brakes. If you can't get brake fluid to come out the rear bleeders you may have a faulty master cylinder or the master was allowed to empty out the reservoir that feeds the rear and now it is air bound. Removing the master cylinder and bench bleeding the master may be what you need to do and don't let the reservoir go dry!
Check the level of brake fluid in the master cylinder reservoir. If it is low that will illuminate the brake light also. If it is low on brake fluid it's time to have the brakes serviced.
the rear is usually smaller and closer to the brake booster
Lubricate with brake fluidInstall into holes in Master cylinderForce reservoir into place using even but constant pressure until seated
Master cylinder reservoir. Driver's side on firewall.Master cylinder reservoir. Driver's side on firewall.
The brakes and clutch share the same reservoir.
If the master cylinder reservoir is empty, you have a leak somewhere. If the master cylinder reservoir is full, the master cylinder is bad.
There are typically two indicators of a faulty master cylinder: 1. you press on the pedal and it goes straight to the floor. If you have fluid, you're not leaking at the wheel cylinders and you have bled the air from the line... it's a master cylinder. 2. You press on the pedal, have some brakes then the pedal fades to the floor. In either case, it's the master cylinder. Of course, if it's leaking or sucking air and sending up bubbles into the reservoir when a friend presses the pedal... that too. Every time you press the pedal there should be a little "swirl" of brake fluid in the reservoir, but there should never be bubbles.
Do not pump the brakes. You will need to get all of the contaminated fluid out and refill the master cylinder.
Check your master cylinder, if it is still full or even partially full after you have tried the brake pedal several times, it's probably the master cylinder. if either side of cylinder reservoir is empty then you have a leak somewhere. Fill up the reservoir and pump the brakes several times and see if fluid is leaking. If fluid leaks at back of master cylinder then replace that. Also check the inside of the rear backing plates for evidence of wetness from a leaky wheel cylinder (rear drum brakes).
The clutch gets its fluid from the master brake cylinder reservoir. The master clutch cylinder sits just below the master brake cylinder reservoir and is fed fluid by gravity.
The ECU for the ABS brakes is attached to the Master cylinder for the brakes.