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Hi Everyone,
I have a Bosch iBooster and the brake pedal from a 2014 Model S p85.
I'm wiring them into my jag and would like to double check from anyone who might no better than me.

Some details
The brake switch has four wires
There is continuity between one red/white and the white/green when the switch IS pressed, but not between any other wires.
There is continuity between one red/white and the green/purple when the switch is NOT pressed, but not between any other wires.

My summary is;
white/green - Brake on
red/white - power ??
red/white - power??
green/purple - brake off

The iBooster has lots of wires;
fat yellow - power
fat black - earth
red/yellow - ignition or brake switch?? (notice this wire branches into 2)
red/white - brake switch or ignition?? (notice this wire branches into 2)

optional wires
couple of CAN twisted pairs.
two black wires that go to a plug in the fluid reservoir. I'm thinking they control a light to the dash to warn you that the fluid is low.

DrJeff confirmed the ibooster wiring except for the red/white wires that i have.

My assumption is that the red/white on the ibooster goes to the red/white on the brake switch as they are the same colours. is that a reasonable guess?
I therefore think the red/yellow is ignition.
 

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Thanks for replying.
Glad to hear my blogpost was helpful.
Did you also wire the pedal travel sensor?
I only see three wires connected to the ECU.
On the GEN2 you have you need (at least) 7 wires to/from the ECU.
From what donor car is it?
This is from MX.

I've only wired the power requirements, ignition signal and then pushed the pedal initiator. Didn't get any movement.
 

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Yes, like that.
Think it makes the ECU more universal.
GEN1 had an external sensor so in that case it was really needed to wire externally as well.
Ahh, brilliant! It's alive! :) Thank you.
Question. When I power the ibooster without ignition (pins 1 & 9, nothing on pin 20 = open) it doesn't assist the brake. Then I simulate ignition (pin 20 = +12v), ibooster does brake assist. Then I disconnect ignition (pin 20 = open), it still brake assists until complete power off.
Should the ignition signal be tied to ground when off (pin 20 = gnd)?
 

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hello, I just recieved the iBooster for my project (tesla model 3).
I have a question, do you have an external Stop light switch or you extracted a signal from the pedal sensor from the iBooster?
IMHO...you should use a extra switch in your pedals to activate the brake light. Are you using regen? If so, you should also activate the brake lights from your VCU when you are in regen mode...
 

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Hi, is this section still alive?

I got an ibooster, which I believe is the newer generation. (See attached)
I followed this amazing article - Wiring the Tesla iBooster - EVcreate, but cannot get it to run. Running it off the 12VDC car battery. Pin#1 bat+;
pin#9 com/bat-;
pin #20 bat+
Mine looks like gen2, but doesn't have a brake fluid reservoir cap.
Any suggestions?
View attachment 122893
View attachment 122892
I have an ibooster gen2 the same as yours. same thing happens to me. I'm testing it on the bench, I also connected the 4 pedal wires, it works for a short time, only if I connect pin 20 for a moment and then disconnect it immediately, it works like this for a while, if I connect pin 20 it stops immediately. and every now and then, it makes small movements, but it doesn't help me... if I disconnect pin 20, it doesn't work, if I just touch and disconnect, it starts again. advice? 2 new items by Celio Regoli 3 new items by Celio Regoli
 

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I have an ibooster gen2 the same as yours. same thing happens to me. I'm testing it on the bench, I also connected the 4 pedal wires, it works for a short time, only if I connect pin 20 for a moment and then disconnect it immediately, it works like this for a while, if I connect pin 20 it stops immediately. and every now and then, it makes small movements, but it doesn't help me... if I disconnect pin 20, it doesn't work, if I just touch and disconnect, it starts again. advice? 2 new items by Celio Regoli 3 new items by Celio Regoli
It makes sense why it works for a while for you after removing the pin 20, per this...
In my experience after removing ignition it takes a little while (30 to 40 sec) and then the iBooster goos to sleep (and has very low current draw).
But, yes, mine seems to work. I've only tested it on the bench though....
My bench test.
in your shoes, I'd check the wiring again.
If not hopefully someone else car help here...
 

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Instagram is annoying AF.

From what I could tell, before Zuckerberg broke out his tinbeggar's cup, is you put the booster under the floor?

Would be interesting to see a few pics, HERE, of how you ran the mechanicals for that one.
 

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Ho controllato tutto e non ci sono errori, metto le foto, se fosse rotto non andrebbe, e anche se avessi i fili del sensore sbagliati, non andrebbe, e anche se avessi i +12v sbagliati e gnd, non andrebbe ... va solo in modalità di spegnimento. Sono costretto ad usare, a mettere un NE555 che ogni tanto dà un impulso.
Scusate, modifico il post, metto la traduzione.

I checked everything and there are no errors, I put the photos, if it were broken it wouldn't go, and even if I had the wrong sensor wires, it wouldn't go, and even if I had the wrong +12v and gnd, it wouldn't go....it just goes in shutdown mode. I am forced to use it, to put a NE555 that gives an impulse every now and then.
 
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