[w.ashcroft]

Received the Sprint FIPO and plugged it in. Everything works brilliantly with the 3G MMI.

Excellent, thanks for confirming!

 

[BoostinFD]

I received mine yesterday... I'm going to mod the cable and see if it works...
Keep your fingers crossed that i dont have to take ami apart

 

[w.ashcroft]

I received mine yesterday... I'm going to mod the cable and see if it works...
Keep your fingers crossed that i dont have to take ami apart

Good luck! :thumbsup:

 

[BoostinFD]

Allright bud... Here's an update...

Did your mod, plugged the cable in and the device... No blue led.. Like the device has no power.
I have another cable unmodified plugged it in and the device... It powers on, pairs with iphone, iphone says it's playing through bluetooth but no sound coming out.

So back to your modified cable with iphone in, it plays through speakers like it normally would but nothing else on the nav screen obviously.

So the issue is power... Any chance maybe i could redirect power from ami to one of the power pins on the cable... Which brings me to another question which one is the power on the connector? There are 2 red, but i couldnt get voltage on either i think...

 

[w.ashcroft]

So back to your modified cable with iphone in, it plays through speakers like it normally would but nothing else on the nav screen obviously.

...but the iPhone isn't charging, right? When I connect my iPod/iPhone to the modified cable I get audio and power (charging).

So the issue is power...

I think you have confirmed this works only on MMI 3G HDD, other systems disconnect power from the modified AMI cable because AMI thinks it isn't required by the connected device.

Any chance maybe i could redirect power from ami to one of the power pins on the cable... Which brings me to another question which one is the power on the connector? There are 2 red, but i couldnt get voltage on either i think...

You would need to use a multimeter on the female AMI connector to see if any pins are constantly powered (which I doubt), however the power is on the two larger/thicker pins of the AMI cable as all other smaller pins are audio/data.

 

[BoostinFD]

I found 3.4v on couple of pins... So i'll see if i redirect it from that pin to the larger one.

Iphone didnt charge, that's correct... I'll see what i can do though... I dont think i can screw anything up with 3 volts... I hope.

You wouldnt happen to have apin layout on the cable or ami at least?

 

[w.ashcroft]

I found 3.4v on couple of pins... So i'll see if i redirect it from that pin to the larger one.

Oooooo :2thumbsup:

You wouldnt happen to have apin layout on the cable or ami at least?

Sure, here you go - unnumbered pins are apparently not used.

Audio: Pins 1,2,3,4
Power: Pins 25,28
Resistor Loop: Pins 21,22

1 - NF in, left-side (low frequency)
2 - NF in, right-side (low frequency)
3 - Low frequency earth
4 - NF in, screen earth (low frequency)
13 - iPod data
14 - iPod data
16 - iPod detected
17 - USB data (+)
18 - USB data (–)
21 - Detect
22 - Earth
24 - FBAS wire (–)
25 - USB (earth)
27 - FBAS wire (+)
28 - USB (+5V)

 

[BoostinFD]

Well the thick red wire is pin 28 which says usb +5
so which one is the actual power wire for the device?

I tried redirecting these pins to the red one... Before connecting to it, shows 3.4v... As soonbas i splice into it, shows .6v

So something is up...

The red byitself shows no power at all...

 

[BoostinFD]

Is this pinout for ami or the connector that you have... Or are they both the same?

 

[w.ashcroft]

Well the thick red wire is pin 28 which says usb +5
so which one is the actual power wire for the device?

That's right, ignore that it says USB.

+5v for the iPod/iPhone/FIPO is pin 28
-0v for the iPod/iPhone/FIPO is pin 25

...these translate to power on the dock connector, don't forget they won't be powered without your original iPod resistor in place.

 

[w.ashcroft]

Is this pinout for ami or the connector that you have... Or are they both the same?

The diagram is for the AMI cable connector (both female unit end and male cable end).

 

[BoostinFD]

So why would a pin 23, which is not labeled, that has 3.4v when tapped into red wire not show 3.4, but rather .6v?

How much voltage is necessary to power this fipo thing?

 

[w.ashcroft]

So why would a pin 23, which is not labeled, that has 3.4v when tapped into red wire not show 3.4, but rather .6v?

What do you mean by tapping? Have you snipped the thick red wire in the connector on pin 28, soldered on a smaller pin and reinserted into the connector as pin 23? Also where on the path from AMI unit in car, AMI cable connector, AMI cable dock connector are you measuring?

How much voltage is necessary to power this fipo thing?

Shouldn't take much, 5v is the norm but you might get away with 3.4v.

 

[BoostinFD]

I pulled it out of the pin 28... Then from the pin 23 tapped into that red one that still goes to the device... Still no luck... Maybe i'm missing something still

 

[w.ashcroft]

I pulled it out of the pin 28... Then from the pin 23 tapped into that red one that still goes to the device... Still no luck... Maybe i'm missing something still

Where are you measuring/probing to find 3.4v and then .6v? Perhaps its changing power levels again depending on what is connected?

 

[BoostinFD]

Well measuring on the back of the connector plugged in ami. I never put the casing back on, so the wires are easily accessible.

Could the resistor i have be wrong? It's 1/4 watt 1k ohm. I didnt get 1/2 watt As it looked bigger then one it was already in there.

When i redirected power completely to the red wirebfrom pin 23... It shows 3.4v but still not charging iphone or powering fipo.

 

[w.ashcroft]

Well measuring on the back of the connector plugged in ami. I never put the casing back on, so the wires are easily accessible.

I see, you're measuring at the connector you've broken open.

Could the resistor i have be wrong? It's 1/4 watt 1k ohm. I didnt get 1/2 watt As it looked bigger then one it was already in there.

No, if the MMI screen shows "external audio source active" or something like that when the cable is plugged in you have the resistor part right.

When i redirected power completely to the red wirebfrom pin 23... It shows 3.4v but still not charging iphone or powering fipo.

With the cable plugged in, what voltage do you get on the power wires (red now on pin 23 rather than original pin 28)?

If 3.4v and it isn't powering the FIPO then it can only be that 3.4v isn't enough.

If .6v I am at a loss, what are you doing that changes it from 3.4v to .6v? e.g. Connecting the FIPO to the other end?

 

[BoostinFD]

Yup connecting fipo drops to .6 or .2

Without it on shows 3.4v

So for some reason the device is making the ami shot the power off on every pin i tried...

 

[BoostinFD]

Last update i guess... Disconnecting the red/black wire from the connector and Connecting 9v battery to the red/black wire made it work... The quality is not that great though. So if there is a way to get the 5+ volts to that pin somehow, it would work... None of the pins from the ami will supply the power. Probably software is shutting it down.

 

[w.ashcroft]

Yup connecting fipo drops to .6 or .2

Without it on shows 3.4v

My guess is that the 3.4v you found isn't capable of delivering any current whatsoever, so when FIPO tries to suck a few milliamps there is serious voltage drop.