Hello, I bought an ELM 327 1.5a with the thought of connecting a Fiat car through the Airbag CAN module, but I encountered a standard problem of the 120 ohm resistor, unfortunately I cannot locate it (my board layout is different than those shown on the internet), please help me locate the problem .

Look for one based on this topic

I checked the resistance between pins 6 and 14 and its bra, i.e. there is no connection between these pins ...

Do it as it says there, pull two lines to ground through 100ohm resistors with 560pF capacitors connected in series. If that doesn't help, you probably don't do anything. This is how you buy the cheapest. Do you have these pins connected? Do an action with inserting the pin switch because it's hard to tell which ones you have connected and which are not.

This is not the cheapest version of this cable, the pins are connected and the resistance between them is 47k ohm

I've never heard of having to terminate both lines to ground. This is supposed to work without any additional termination. Proper termination is already in the existing network in the car.

Connecting Fiat Car to Airbag CAN Module with ELM 327 1.5a: 120 Ohm Resistor Issue

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#1 16459814 06 May 2017 22:38

gnegon gnegon

Level 14

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Post #1
16459814 06 May 2017 22:38

Hello, I bought an ELM 327 1.5a with the thought of connecting a Fiat car through the Airbag CAN module, but I encountered a standard problem of the 120 ohm resistor, unfortunately I cannot locate it (my board layout is different than those shown on the internet), please help me locate the problem .
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#2 16459850 06 May 2017 22:58

piotrekwoj1 piotrekwoj1

Level 42

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Post #2
16459850 06 May 2017 22:58

Look for one based on this topic
http://fiatpunto.com.pl/topic28042.html
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#3 16460226 07 May 2017 09:20

gnegon gnegon

Level 14

» | Topic author Helpful post? (+1)

Post #3
16460226 07 May 2017 09:20

I checked the resistance between pins 6 and 14 and its bra, i.e. there is no connection between these pins ...
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#4 16460273 07 May 2017 09:51

piotrekwoj1 piotrekwoj1

Level 42

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Post #4
16460273 07 May 2017 09:51

Do it as it says there, pull two lines to ground through 100ohm resistors with 560pF capacitors connected in series. If that doesn't help, you probably don't do anything. This is how you buy the cheapest.
Do you have these pins connected? Do an action with inserting the pin switch because it's hard to tell which ones you have connected and which are not.
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#5 16461235 07 May 2017 17:20

gnegon gnegon

Level 14

» | Topic author Helpful post? (0)

Post #5
16461235 07 May 2017 17:20

This is not the cheapest version of this cable, the pins are connected and the resistance between them is 47k ohm
#6 16502740 30 May 2017 13:11

rosak rosak

Car dashboards specialist

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Post #6
16502740 30 May 2017 13:11

I've never heard of having to terminate both lines to ground. This is supposed to work without any additional termination. Proper termination is already in the existing network in the car.
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