Rwal Brakes?

djunkees · 10-10-2008, 09:56 PM

what is the easiest way to determine if my `92 1.6L-16V sidekick has the optional RWAL brake system. Im trying to diagnose the brake warning lite in a steady, dimmly illuminated state and I`ll of course be using JTGH`s handy dandy site as a reference!

jtgh · 10-11-2008, 04:06 PM

that's easy.
pop hood (bonnet if in UK)
now
look at master cylinder.
does it just look like just a cylinder and diagharam or
does it have all this other weird junk around it.

bingo RWAL.

http://carfix.stufftoread.com/brakes/MC-real91-up.jpg

well hidden
see that back split crinkle cable , n photo, that is the RWAL dump valve cable.

also on the rear axle center pig carrier left side front is a sensor and wire cable.

cheers

djunkees · 10-13-2008, 12:45 AM

thanks-it IS rwal !

djunkees · 10-13-2008, 01:55 AM

Im trying to use the flowchart which says to check the voltage between pins but no reference is made anywhere as to what connector to measure.I am doing this only after following the earlier steps on your site for `brake lite stays on.` I should also mention that it is only 80% illuminated and becomes 100% only after the `e' brake is applied-I think I am on the right track except not knowing which connector to measure...

jtgh · 10-13-2008, 01:42 PM

the procedure ( basic) 3 steps. ) 4 really)
unplug all inputs to the Brake light seqentially , hand brake off, pull brake fluid res. wire,
pull wire to pressure diff wires.

this is a block of metal, below MC, it is small and just monolitic , but there is his sensor
on it and many brake lines, (ignore MC and Dump valve , dump has many wires not 2)
it has 2 wires and is below MC so nothing else matches that.
pull it.
now if lamp is still on the RWAL controller is crying for help.
the trick here is to make sure non of these switches are closed.

step 2 (hand brake off, fluid switch open, diff switch open)
command up diag mode of the RWAL.
Please keep this in mind, 1 lamp 4 diff. error producing condtions, you must repair all the other conditions before working the RWAL or the lamp will not work .

once you get to the point, only RWAL is controlling the lamp.
then place that jumper.

step 3: get codes. look them up
step 4 test device it says is bad.

That japanese flow chart is crude but i do understand it.
i have annotated copies if need be....

you goal should be getting the codes out.

the lamp is shared , that is the only hard part up till now.

jtgh · 10-13-2008, 02:22 PM

brake lamp stuck on or flashing

click above and hit F5 (refresh) new data.
and you answers.

djunkees · 10-13-2008, 05:21 PM

All these tests have allready been done and each one has passed. No fault codes were flashed out so now I`m directed to flowchart `B' . The 1st step of flowchart `B' asks me to `measure voltage between terminal 1 and 3' -but it fails to mention which connector or device where these terminals are.They could be talking about the terminal 1 and 3 on the RWAL RELAY or the RWAL CONTROL MODULE HARNESS CONNECTOR or maybe something else? ?

jtgh · 10-13-2008, 06:47 PM

here is my page one comments.
see attachment.

PG B, is CM malf page, this means the CM messing up.

page B is faulty , my 95 manual corrects a major error.
change 1 to 3 ,to 5 to 3. Thats the connector that is jumper connector. on steering column , white in color.

pin 5 Ground.

pin 3 goes to RWAL CM pin 7. (which is the same pins for diagnostic call Up)
notice carefully , you jumper it first ,the remove after 2 seconds or longer .
if you do not get any codes. ( there is no OK code, strangely, but the light is brake lamp is on)
so at the point in flow cart 1 , it says to go to chart B.
we are here, and now we measure the same pins (95fsm corrects the error , 3 and 5)

the next block down on left side is hard to read, that is pin 10.

i have the 13 pages of flow charts on each RWAL DTC trouble code, if you need them.
hollar.

cheers.

the 91 FSM had 2 errors.
see next post and attachment, i think ? i figure it out.

jtgh · 10-14-2008, 06:59 PM

This Suz flow charts are very bad, and im sure something happens
in the translation from Japanese to Eng.
and they seem afraid of the IBM decision box, so I added one.

this page is the gross malfunction of RWAL controller or loss of power to it.

hope it helps.

ask more questions.

note the comment there on good to drive is true if this path corrects the Solid glowing of the Brake light.

djunkees · 10-14-2008, 10:17 PM

Thanks so much Jerry!! Your instructions are more clear -and infomative-than the manuals!! I`ll try the voltage checks tonight on my work break or tomorrow afternoon and let you know what happens...chow for now!!