FAULTY ELM 327 INTERFACES DE-MYSTIFIED (READ HERE)

[lucarossi.1963]

Hello Lucarossi

What ELM this is because in the image
v1.5?
or
v2.1?

This is the version v2.1 not to change to work with MES can

But the v1.5 before, this is to be modified.

But I do need a better picture
and yet
What kind of car and what control you want to read ???

Greeting Eddy

I was sold for elm327 bluetooth V1.5 but when I run the test from the list to me by v2.1
I would like to perform diagnostics for engine fiat punto 1.3mjt 2009.
What are you going to change it?
I removed the resistance 27 and torque I read the engine control unit, I also raised the resistance R4 hope I have not compromised the intrfaccia.
The outcome of the test and always equal .........
I am attaching below

• COMMAND: ATZ
  RESPONSE: ATZ
  
  
  ELM327 v2.1
  
  >
  
  COMMAND: ATI
  RESPONSE: ATI
  ELM327 v2.1
  
  >
  
  COMMAND: ATE0
  RESPONSE: ATE0
  OK
  
  >
  
  COMMAND: ATL0
  RESPONSE: OK
  
  >
  
  COMMAND: ATH0
  RESPONSE: OK
  
  >
  
  COMMAND: ATSPC
  RESPONSE: OK
  
  >
  
  COMMAND: ATS0
  RESPONSE: OK
  
  >
  
  COMMAND: ATCAF0
  RESPONSE: OK
  
  >
  
  COMMAND: ATCFC0
  RESPONSE: ?
  
  >
  
  COMMAND: ATCRA 7B0
  RESPONSE: ?
  
  >
  
  COMMAND: ATSH 7B0
  RESPONSE: ?
  
  >
  
  COMMAND: ATAT1
  RESPONSE: OK
  
  >
  
  COMMAND: ATST41
  RESPONSE: OK
  
  >
  
  COMMAND: ATBI
  RESPONSE: OK
  
  >
  
  WARNING: This interface is not compatible with ELM 327 1.3! Will not connect to any CAN module.

[Alfaeddy]

Hello

I do not understand why you have the resistor R4 away ??
And the resistor R27 has probably unrelated to the bridge. !!
What ohm reading is R27 ??

Please remove even the white plastic on the 4 pins
possibly the resistor is below

Greeting Eddy

[lucarossi.1963]

Hello Alfaeddy
the R27 was about 100 ohms between pin 6:14, sorry I do not understand what I have to raise more. I'm Italian and I'm using a trans latore

[Alfaeddy]

Hi Luca Rossi
I also use a translator to
The resistor must have 120 ohms when R27 = 100 ohms he is not.
At the 8 plug pins you can remove the white plastic base
Look after including whether are still resistors.
Greeting Eddy

[lucarossi.1963]

Hi Alfaeddy
resistance R27 measurement scale 200 ohms = 98.2 .....
What should I lift near the white plug 8 pin?
one marked with a red circle?

[lucarossi.1963]

Anyway, I wanted to know if you can change the firmware since multiecuscan recognizes him as elm 327 V2.1 and says it is not compatible with elm 327V1.3 (and will not connect to any Canon .......... .)

[Alfaeddy]

Hi Luca Rossi


No, I mean, look under the white housing
I once marked the approximate locations.
This white housing can be removed upwards.

Greeting Eddy

IMG_4368 markiert.jpg (66.2 KiB) Viewed 7227 times

[Waltomatic]

WOW, big job!

[lucarossi.1963]

Hi Alfaeddy

here he is now?

[pumpingiron91]

Hello everybody, I bought a super chinese ELM327 v1.4 cable but it reads only the Engine Control Unit (Multieciscan, registered). I know, I have to change some resistance or capacitor, but this type I have not found it yet. I add a picture about mine.

!!!Thanks your help!!