Jump to content
SAU Community

Recommended Posts

hi all

i am trying to get a rb20det running in a vl, but i have an issue with the wiring, when i turn the IGN on, the fuel pump primes, the lights on the ecu are on, but it won't start so i pulled out the CAS and turned it around with the IGN on and started testing wires, the injectors are working, but i am getting no power to the ignitor pack from the ecu while spinning the CAS, i have tested the wires back to the ecu and they are fine. dose anyone have an ideas were i have gone wrong.

Cheers

Dan

Link to comment
https://www.sau.com.au/forums/topic/123244-need-help-with-rb20det-wiring/
Share on other sites

i can't see any relays in the wiring diagrams, as there are 6 wires comming from the ecu to the ignitor and then the other side of the ignitor goes to the 6 coils packs.

i am getting no signal to fire from the ecu, so if you could explaine were this relay is ment to be, that would be help full.

it's down near the ecu.. there are two of them and they should be green (on r32).. the power source for the engine is switched through them. The ignitor gets it's power feed directly from one of the pins of the relay.

ok, after looking over the diagrams again, i am still lost with what you gays are saying, the ignitor pack has 6 wires going in one side, and 7 the other side. on the side with 6 wires it shows them going to the ecu(pins 1, 2, 3, 11, 12, 13), then on the other side it shows 6 wires going to the coils and 1 wire going to earth.

the only thing i can see that is connected to one of the relays is the power going to the coils.

let me know if i have this all wrong

Dan

I think they think you are confused.

The ignitor is connected directly to the ecu via 7 wires. 6 triggers and an earth.

The 6 outputs from the ignitor run to the coils. I think it's the E pin but i could be wrong there

What the guys are talking about is the ign relay which supplies power to the coils. This is the most likely culprit for your no spark issue.

In a nutshell, make sure that the ign and eccs relays are getting a 12V feed. The ign relay will be connected to the + pin on all the coils. The - pins are all common earthed.

Edited by BHDave

The 6 triggers are negative switching

There is a latching plug close to the igniter which also goes to the coils this has the positive feed and earth as well as the timing link wire.

Check you have 12 volts and earth at the cas then check the 2 signals with a LED one will pulse 6 times per revolution of the cas the other 180 times per revolution which will look as though it is on all the time unless you turn it very slowly.

ok, i now have spark, IGN and ESSC relay are working, i have given 12v + to the aac valve and the 02 sensor heater, also the CAS is working,

but the motor still won't start, any idea's what else i am need to check.

cheers

Edited by darkl0n

About the only thing left is to make sure that the ignition on signal that goes direct from the key to the ecu is still providing power when cranking. Afm could need power aswell. And you may also need to hook up the cranking signal to the ecu (but that isn't essencial and it should still fire without it) You know the injectors will fire when ignition is on, you know the fuel pump works and you know you have spark

And that the fuel hoses are connected the right way :D I've made this mistake myself once.

Is the CAS aligned correctly. It should only fit one way because of the half-moon keys in the CAS and the camshaft.

Often, the camshaft key snaps off, permitting the CAS to align only on the teeth.

w00t!

I ran into this problem today coincidently, on a mates cef that I wired about 2 years ago. Even though it was hooked up it wasn't supplying enough power to switch on the power fc.

Took me ages to find another source that provided enough power while cranking but didn't set the relays clicking (in the same way as ryno's problem) when the ignition was turned on.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
    • Place the new daughterboard in the case and mount it using the 3 small black rivets provided, and reconnect the 3 factory ribbon cables to the new board Then, use the 3 piggyback cables from the daughterboard into the factory board on top (there are stand offs in the case to keep them apart. and remember to reconnect the antenna and rear cover fan wires. 1 screw to hold the motherboard in place. Before closing the case, make a hole in the sticker covering a hole in the case and run the cable for the android unit into the plug there. The video forgot this step, so did I, so will you probably. Then redo the 4 screws on back, 2 each top and bottom, 3 each side and put the 2 brackets back on.....all ready to go and not that tricky really.      
    • Onto the android unit. You need to remove the top screen because there is a daughterboard to put inside the case. Each side vent pops out from clips; start at the bottom and carefully remove upwards (use a trim remover tool to avoid breaking anything). Then the lower screen and controls come out, 4 screws, a couple of clips (including 3 flimsy ones at the top) and 3 plugs on the rear. Then the upper screen, 4 screws and a bunch of plugs and she is out. From there, remove the mounting brackets (2 screws each), 4 screws on the rear, 2 screws top and bottom and 3 screws holding in the small plates on each side. When you remove the back cover (tight fit), watch out for the power cable for the fan, I removed it so I could put the back aside. The mainboard is held in by 1 screw in the middle, 1 aerial at the top and 3 ribbon cables. If you've ever done any laptop stuff the ribbon cables are OK to work with, just pop up the retainer and they slide out. If you are not familiar just grab a 12 year old from an iphone factory, they will know how it works The case should now look like this:
    • Switching the console was tricky. First there were 6 screws to remove, and also the little adapter loom and its screws had to come out. Also don't forget to remove the 2 screws holding the central locking receiver. Then there are 4 clips on either side....these were very tight in this case and needed careful persuading with a long flat screw driver....some force required but not enough to break them...this was probably the fiddliest part of the whole job. In my case I needed both the wiring loom and the central locking receiver module to swap across to the new one. That was it for the console, so "assembly is the reverse of disassembly"
×
×
  • Create New...