no (and yes) the car has ABS.
if zero fluid there, then the ABS modulator is real bad.
or its input bad called the master cylinder.
the MC has 2 parts inside, one can fail and other ok.
to finds this is easy, learn to crack lines.
means loosen the flared fittings. or the bleeds where found.
my guess you mean that both rear bleeds are dead.
so move forward and crack (loosen the fittings so they can leak)
person to pressure brake, key off is ok, brakes work with no key on.(manual brakes if no blockages)
so if the lines are dead on ABS MOD but good in front
the ABD mod is toast (rusted inside)
when did the brake work right, list week .last year, or?
the modulator is called in jeep the HCU
see those fittings? ccw is loose.
the fsm is free, read it yet,?
WK is same car.http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service
posted over 300 times this free fsm link.
i only have questions.
1: did you remove any parts.?
2: did you attempt to bleed the brakes and not read the words in the FSM on how to do that first>
3: or say car was parked for 1 year.
then you found brakes in rear bad. or have ABS or Brake failure lamps glowing??????
or the scan tools show errors?
then decided to check for fluid pressure on rear of car using , stand methods.,
4: were both rear caliper lacking pressure, or just 1 side.
the post implies both..."brakes". but>>>>?????
as you can see , us knowing the full story,
is a win/win... the context of your work.