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Author Topic: Ecu doesnt light up  (Read 1170 times)

evoeta

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Ecu doesnt light up
« on: March 05, 2014, 07:20:19 PM »
hey guys!!

wondering if anyone has had the same issue or similar and can pass on some advice, ok problem. ive gone to plug my ecu in which is a chipped ecu for my rb30det, the led on the side doesnt light up and gets no power. i have checked the power going into the ecu an the ground they are sweet as, i have put the ecu into another car and it works legit. i also got my hands on a 25det ecu and that lights up then tried a 20det and 20de ecu both dont work WTH cant figure it out can someone shed some light please?!

cheers in advance

promaori

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Ecu doesnt light up
« Reply #1 on: March 05, 2014, 08:40:49 PM »
if it doesn't power up, then its possible that something has short circuited in the ECU and broken a vital connection. best bet is to use another ECU or try and fix the traces on the ECU board

evoeta

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Ecu doesnt light up
« Reply #2 on: March 06, 2014, 06:09:57 PM »
the ecu is sweet, i have put it in another car an run it, also got the ecu from the other car which runs and put it in and that ecu didnt light up but then i when i reinstalled it into the car it came from

downtrail

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Ecu doesnt light up
« Reply #3 on: March 06, 2014, 06:49:11 PM »
might be a ground missing there are like 7 grounds for an rb ecu some are for injector switching some are for aux switching some are for ignition switching etc. if there is one missing this may be the cause of your problems.
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evoeta

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Ecu doesnt light up
« Reply #4 on: March 06, 2014, 09:06:34 PM »
Ahhh i didnt know this. i shall investigate this. but would that cause my 25det ecu to light up and not my rb20 ones??

downtrail

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Ecu doesnt light up
« Reply #5 on: March 06, 2014, 09:36:02 PM »
possibly for 20det ecu

pin no 10,30,50,107,108,20,60,116 should be grounded.

pin no 58, 109 constant +12v
pin no 49,59 ign feed from eccs relay

eccs relay triggered from pin no 16 switches a ground to power up ecu

Hope that helps
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