ECM passat tdi 130 tear2002 - GSM-Forum

lavoisier1965 · 02-05-2013, 21:06

I ask if it possible to scan (read) ECM (calculator motor) on table with vag-com.

sharacing · 02-17-2013, 09:12

only to read trouble codes (diagnose) or read some parameters (voltage, self test...) - yes

to read all the parameters you must connect its sensor (pressure, water temperature...)

connect 12v, ground and K line to ECU (pinout see AutoData or ELSA)

connect 12v, ground and K line to VAG COM adapter.

use external 12v adapter for powering both ECU and VAG COM cable.

lavoisier1965 · 02-20-2013, 12:18

Quote:

Originally Posted by sharacing

only to read trouble codes (diagnose) or read some parameters (voltage, self test...) - yes

to read all the parameters you must connect its sensor (pressure, water temperature...)

connect 12v, ground and K line to ECU (pinout see AutoData or ELSA)

connect 12v, ground and K line to VAG COM adapter.

use external 12v adapter for powering both ECU and VAG COM cable.

many thanks for your reply..
my problem is that i cant connect to car with vagcom but i connect to airbag,abs,.. without ECM. ECM connect to car no connection with any modul

sharacing · 02-20-2013, 12:36

Do you have an aftermarket radio (Pioneer, Sony...) it was common problem, as they block in car diagnose because where is diagnostic pin in original radio EURO Connector and when it is connected to them (aftermarket radio), they give output 12v for automatic antenna in diagnostic pin and therefore block vag com adapter and also kill adapters without auto-protection IC inside...

Also is possible with some aftermarket ECU power-modules and such crap connected to any of K line of diagnostic as it is the same line with one root (that root is tachometer)

sharacing · 02-20-2013, 12:55

Do you have an aftermarket radio (Pioneer, Sony...)?

It was common problem, as when one install some aftermarket radio, it then blocks in car diagnose system for most of the components (not all) because where commonly was pin for automatic antenna (+12v switched) VW decided to put its diagnostic K line for original VW radios inside EURO Connector.

So when everything is from factory - no problems, but when one installs aftermarket radio it puts output 12v for automatic antenna in diagnostic pin and therefore block vag com adapter and also kill adapters without auto-protection IC inside, and killed some original VW VAS diagnostic scanners as I have heard

If you have not original radio, first suggestion is to disconnect it from car and then try to diagnose.

Another possibility is that K line for motordiagnose goes to Engine ECU not directly from OBD2 connector like for airbag etc. but through Instrument Cluster (Tachometer). If aftermarket radio is not the case of the problem, than maybe Instruments got defective not to pass Diagnose signal to engine ECU any more as it should.

MfG
VW Doctor
Nicholas (sharacing)

lavoisier1965 · 03-01-2013, 23:42

Quote:

Originally Posted by sharacing

Do you have an aftermarket radio (Pioneer, Sony...)?

It was common problem, as when one install some aftermarket radio, it then blocks in car diagnose system for most of the components (not all) because where commonly was pin for automatic antenna (+12v switched) VW decided to put its diagnostic K line for original VW radios inside EURO Connector.

So when everything is from factory - no problems, but when one installs aftermarket radio it puts output 12v for automatic antenna in diagnostic pin and therefore block vag com adapter and also kill adapters without auto-protection IC inside, and killed some original VW VAS diagnostic scanners as I have heard

If you have not original radio, first suggestion is to disconnect it from car and then try to diagnose.

Another possibility is that K line for motordiagnose goes to Engine ECU not directly from OBD2 connector like for airbag etc. but through Instrument Cluster (Tachometer). If aftermarket radio is not the case of the problem, than maybe Instruments got defective not to pass Diagnose signal to engine ECU any more as it should.

MfG
VW Doctor
Nicholas (sharacing)

thank you freind for your help..
no, aftermarket is not the case of the problem..
yes,maybe instrument ho case problem;I ask if you can give suggestions what i can do on instrument.

hackinen · 11-17-2013, 12:08

your car was tuned program ? if yes probably owner have lock obd communication for protect his work.

02-05-2013, 21:06	#1 (permalink)
lavoisier1965 Freak Poster Join Date: Dec 2007 Location: algeria bordj bou arreridj 34 Posts: 314 Member: 641879 Status: Offline Sonork: police Thanks Meter: 46	ECM passat tdi 130 tear2002 I ask if it possible to scan (read) ECM (calculator motor) on table with vag-com.

02-17-2013, 09:12	#2 (permalink)
sharacing Junior Member Join Date: Oct 2006 Location: Novi Sad Age: 46 Posts: 13 Member: 367739 Status: Offline Thanks Meter: 0	only to read trouble codes (diagnose) or read some parameters (voltage, self test...) - yes to read all the parameters you must connect its sensor (pressure, water temperature...) connect 12v, ground and K line to ECU (pinout see AutoData or ELSA) connect 12v, ground and K line to VAG COM adapter. use external 12v adapter for powering both ECU and VAG COM cable.

02-20-2013, 12:36	#4 (permalink)
sharacing Junior Member Join Date: Oct 2006 Location: Novi Sad Age: 46 Posts: 13 Member: 367739 Status: Offline Thanks Meter: 0	Do you have an aftermarket radio (Pioneer, Sony...) it was common problem, as they block in car diagnose because where is diagnostic pin in original radio EURO Connector and when it is connected to them (aftermarket radio), they give output 12v for automatic antenna in diagnostic pin and therefore block vag com adapter and also kill adapters without auto-protection IC inside... Also is possible with some aftermarket ECU power-modules and such crap connected to any of K line of diagnostic as it is the same line with one root (that root is tachometer)

02-20-2013, 12:55	#5 (permalink)
sharacing Junior Member Join Date: Oct 2006 Location: Novi Sad Age: 46 Posts: 13 Member: 367739 Status: Offline Thanks Meter: 0	Do you have an aftermarket radio (Pioneer, Sony...)? It was common problem, as when one install some aftermarket radio, it then blocks in car diagnose system for most of the components (not all) because where commonly was pin for automatic antenna (+12v switched) VW decided to put its diagnostic K line for original VW radios inside EURO Connector. So when everything is from factory - no problems, but when one installs aftermarket radio it puts output 12v for automatic antenna in diagnostic pin and therefore block vag com adapter and also kill adapters without auto-protection IC inside, and killed some original VW VAS diagnostic scanners as I have heard If you have not original radio, first suggestion is to disconnect it from car and then try to diagnose. Another possibility is that K line for motordiagnose goes to Engine ECU not directly from OBD2 connector like for airbag etc. but through Instrument Cluster (Tachometer). If aftermarket radio is not the case of the problem, than maybe Instruments got defective not to pass Diagnose signal to engine ECU any more as it should. MfG VW Doctor Nicholas (sharacing)

11-17-2013, 12:08	#7 (permalink)
hackinen Junior Member Join Date: Jan 2010 Posts: 1 Member: 1199535 Status: Offline Thanks Meter: 0	your car was tuned program ? if yes probably owner have lock obd communication for protect his work.