how to jump rb25det CAS?

Post by **ANVIL** » Fri Jul 24, 2009 3:35 pm

well after months of chasing this stupid no start issue (the thread is still on the first page) im begining to suspect it may be a wiring issue with the CAS. can someone tell me how to jump my CAS to work to help diag this issue??

Post by **Joe** » Fri Jul 24, 2009 7:34 pm

you cant jump a cas lol

only way to really test it is to unbolt it from the engine and turn it by hand to see if the injectors click.

Post by **ANVIL** » Sun Jul 26, 2009 11:58 am

i meant jump the wiring.

like can some one tell me where each wire is supposed to be wired to, so i can re-wiring it directly to the right source to make sure the wiring is correct and not messed up some where in the harness

Post by **STLu13** » Mon Jul 27, 2009 7:58 pm

If you are getting fuel and spark then the cas may not be your issue, but Ive seen some weird cas problems on rb26s. The way to test your cas is to...

1. take cas off with it still plugged in2. turn ur ignition to run3. place the negative lead of your mulimeter on a ground4. probe the wires in the connector to make sure you have a +12vdc5. now there should be 1 or 2 signal wires at like 3 or 5 volts when you are spinning the cas

I dont know the pinout of the rb cas off hand, but it should have 2 signal wires for different degrees. Like Joe said you should hear the fuel pump on and the injectors click when you spin it. Ill find the exact wire pinout for you from a friend. gl

Post by **ANVIL** » Fri Jul 31, 2009 4:23 pm

weekend bump...

Post by **ANVIL** » Mon Aug 03, 2009 1:48 pm

no one here does their own wiring and can tell me how the wiring to the cas is??

Post by **ANVIL** » Fri Aug 07, 2009 2:41 pm

Wow used to get answers same day on this forum. $20 paypal to who can tell me how to do it

Post by **rb25det250sx** » Fri Aug 07, 2009 3:05 pm

the CAS wires go to pins

1-120* pin #412-1* Pin #423-Positive this is tapped in to AF27 which is pin #344-GRD connects to the ECCS

my paypal account is [email protected]

edit correction.
Modified by rb25det250sx at 6:18 PM 8/7/2009

Post by **rb25det250sx** » Sat Aug 08, 2009 8:53 am

BUMP..for the sucker that owes me 20 bucks

Post by **ANVIL** » Mon Aug 10, 2009 7:15 pm

Payment sent thanks finally. Hopefully I'll have time to re wire tomorrow

Post by **ANVIL** » Tue Aug 11, 2009 4:14 pm

Pin 34 has nothing to it and never did according to the ecu pinout.... WTF

Post by **Joe** » Tue Aug 11, 2009 4:17 pm

this f***ing forum is not a pay for information forum

anyone that demands money for helping gets banned.

Post by **rb25det250sx** » Tue Aug 11, 2009 5:58 pm

i didnt demand anything...he offered.

Post by **Joe** » Tue Aug 11, 2009 6:15 pm

rb25det250sx wrote:i didnt demand anything...he offered.

rb25det250sx wrote:BUMP..for the sucker that owes me 20 bucks

not only that but you were WRONG.

Post by **ANVIL** » Wed Aug 12, 2009 9:17 am

It was offered I don't have a problem paying when I offer. Just sucks I didn t get an answer until I offered

Post by **rb25det250sx** » Wed Aug 12, 2009 9:18 am

either way... how was i wrong. i looked it up. followed the wires in my harness. then looked at the pin out, and double checked on a pic of a wireharness that i found on here.

Post by **rb25det250sx** » Wed Aug 12, 2009 9:26 am

pin #41&51 120*pin #42&52 1*

The ground does connect to a ECCSand the positive according the the picture connects to AF27 which is B/W and connects to pin #33.

and im perty positive... if not mayb carl h can comprehend

Post by **eh?** » Wed Aug 12, 2009 9:40 am

You don't know how to read the diagrams?

http://rbforums.org/pics/rb25diagram.jpg

http://wiki.r31skylineclub.com...s.jpg

http://paulr33.skylinesaustral...g.jpg

Post by **rb25det250sx** » Wed Aug 12, 2009 9:45 am

so where the hell does the positive connect then...

Post by **eh?** » Wed Aug 12, 2009 9:54 am

I'm not talking about you.

Post by **ANVIL** » Wed Aug 12, 2009 9:57 am

They look like crap on my phone.

So I need to splice the signal wires into 2 pins each?

Post by **eh?** » Wed Aug 12, 2009 10:20 am

Why do you need to jump it?Just check for continuity.

Post by **ANVIL** » Wed Aug 12, 2009 10:25 am

To be 100% sure it's wired correctly. If theywere shorted to each other or something it's possible they would still have continuity

Post by **rb25det250sx** » Wed Aug 12, 2009 10:26 am

like previously posted... take CAS off and spin and listen to see if injectors click.

Post by **eh?** » Wed Aug 12, 2009 10:49 am

ANVIL wrote:To be 100% sure it's wired correctly. If theywere shorted to each other or something it's possible they would still have continuity

Yes and that's part of a wiring check. You check continuity to each end and to each other. Obviously you want continuity to each end but not to each other. Next check for a good power source and ground.

Post by **ANVIL** » Wed Aug 12, 2009 1:03 pm

I did that spin test The injectors work it just seems like they aren't firing at the correct time. That's why I'm concerned about the signal wires. So do I splice each signal wire to 2 ecu pins?

Post by **rb25det250sx** » Wed Aug 12, 2009 3:39 pm

yeah..i would assume so, since it shows that on the diagram.

Post by **ANVIL** » Thu Aug 13, 2009 9:08 am

I'll try it but Can someone confirM that that's how to do it

how to jump rb25det CAS?

how to jump rb25det CAS?

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