Autocom can not connect BMW E60/61 E90 series

[ioanrokos]

Any idea for this problem?
OKI chip inside, R75&R74 390ohm

[spider-wifi]

I tested several pieces autocom cdp to E90. This problem isn't only with board the name AB. Tagging resistors R1148 & R1149 instead R75 & R74

[ioanrokos]

I think maybe one or two faulty relays in the main PBC.
Perhaps the quality of the parts inside.

[willobd]

Any idea for this problem?
OKI chip inside, R75&R74 390ohm
your autocom version is 2011.01 version or 2011.03 version??
with the OKI chip, the autocom can do Ford, BMW and Opel cars well.
but it depend, because this is just a copy tool.
and the 2011.03 version can do more cars than the 2011.01 version

[ioanrokos]

Is 2011.3 version
It makes all BMW exept E60, E90, E87

i notice in mine board relay, that max4820 chips has bad soldering(these two RIGHT from the relays)
both of them has two legs soldered together

[ioanrokos]

Has any has the same problem
I can not figure out whats happend

[ioanrokos]

[B]STOLEN FROM ANOTHER FORUM
this is all i have found about making vci 100% functional (ford, bmw...):

test interface with usb cable, not bluetooth
use software without internet connection or add "127.0.0.1 activation.autocom.se" to C:\Windows\system32\drivers\etc\hosts file
firmware must be upgraded with vci connected to car, and to pc with usb cable
try selecting the same ecu of other car model of the same make (brand)

most important is Change R74 and R75 + 2 K-line trancievers and will be OK on BMW E60 and E90. You have to change all together! If change first K-line trancievers and than connect to any brand of car, you will have to buy another pair of trancievers! (?????):

1. check/replace 2 resitors > 390 ohm: R74/R75 SMD ones should be marked 391 or 3900 (not 39R0 = 39 ohm, not 300 = 30 Ohm)
see attached picture 1

2. check/replace poor quality Vishay or SI9241 K-line transceivers > 9241A:
see attached picture 1

Check voltage on K and L line with multimeter. On idle you must have about 12V on them. When you start communication with car lines shortly go down on about 1V. If you don't get that voltage drop try to check signal on TX input of 9141 IC. If you have some pulse (i think from -5V to 5V) during initializing of connection with car then 9241 IC is surely defective

maybe transceiver is ok, change 3.9 or 39 ohm > 560 ohm on pull-up resistor of SI9241 (or 470 ohm up to 1 Kohm)

3. check/replace relays:
see attached picture 3

bad K-Line comunication: 1 relay in relay board freeze to position "ON". open the relay with a knife and I set the weight inside the spring to automatically switch to the OFF position (see attached picture 2)

When CDP powered and connected to USB, run SW and connect to any car (no need for a real car!) and then go back to main SW window. measure relay coils and see how many are ON: 3 relays must be ON when in this window! If only 2 are ON BMW E60 and E90 don't work!

only 2 red marked must be ON when standby, both 2 red and 2 green marked (1 relay for obd pin 1 and 1 relay for obd pin 7 and 15) must be ON with bmw (see attached picture 4)

replace relays drivers ic's LV125D > NPX 74LV125D (see attached picture 8 and 9)

when applied 5v on one relay, if 3 relays turn ON this is not OK, only one by one must turn ON (+ is common for all relays, drive with ***8211;, you can test all of them just moving ground)

with bmw problem is on relay pcb, relays are ok, must be 1 of the relay drivers

replace MAX chips on relay board and if Ford not work get new OKI chip

4. check/replace oki chip, some come defective, or replace made in japan > thailand

5. check/replace capacitors (need 47uF 50V for trucks) replace all capacitors on PCB to electrolitic

6. check/replace voltage regulator near capacitors

7. check obd2 connector pins, all straight, not bended

8. check/replace 4 resitors together max1487: R36 (R1143) 47 Ohms, R34 (R1144) 10K, R33 (R1141) 10K, R35 (R1142) 10K or 470 ohms ??? (see attached picture 5)

9. check resitor R58 and capacitors C11 and C5 (different between working and not working autocoms). with 9241A diagram you can see that K line need resistor to Vbat (this is 500ohm on both autocom) and capacitor to GND (measured this capacitance in circuit and on working AC is 40nF and on non working AC is 100nF) or change C11 to 102pF = 1nF
see attached picture 6

10. solder some surface of pcb with hot air (see attached picture 7)

11. open the clone ,get a good flux, remake all soldures of the pcb

12. check/replace IC close to usb port ATMLH124 > 93LC4681

[aliashoyo]

[B]STOLEN FROM ANOTHER FORUM
this is all i have found about making vci 100% functional (ford, bmw...):

test interface with usb cable, not bluetooth
use software without internet connection or add "127.0.0.1 activation.autocom.se" to C:\Windows\system32\drivers\etc\hosts file
firmware must be upgraded with vci connected to car, and to pc with usb cable
try selecting the same ecu of other car model of the same make (brand)

most important is Change R74 and R75 + 2 K-line trancievers and will be OK on BMW E60 and E90. You have to change all together! If change first K-line trancievers and than connect to any brand of car, you will have to buy another pair of trancievers! (?????):

1. check/replace 2 resitors > 390 ohm: R74/R75 SMD ones should be marked 391 or 3900 (not 39R0 = 39 ohm, not 300 = 30 Ohm)
see attached picture 1

2. check/replace poor quality Vishay or SI9241 K-line transceivers > 9241A:
see attached picture 1

Check voltage on K and L line with multimeter. On idle you must have about 12V on them. When you start communication with car lines shortly go down on about 1V. If you don't get that voltage drop try to check signal on TX input of 9141 IC. If you have some pulse (i think from -5V to 5V) during initializing of connection with car then 9241 IC is surely defective

maybe transceiver is ok, change 3.9 or 39 ohm > 560 ohm on pull-up resistor of SI9241 (or 470 ohm up to 1 Kohm)

3. check/replace relays:
see attached picture 3

bad K-Line comunication: 1 relay in relay board freeze to position "ON". open the relay with a knife and I set the weight inside the spring to automatically switch to the OFF position (see attached picture 2)

When CDP powered and connected to USB, run SW and connect to any car (no need for a real car!) and then go back to main SW window. measure relay coils and see how many are ON: 3 relays must be ON when in this window! If only 2 are ON BMW E60 and E90 don't work!

only 2 red marked must be ON when standby, both 2 red and 2 green marked (1 relay for obd pin 1 and 1 relay for obd pin 7 and 15) must be ON with bmw (see attached picture 4)

replace relays drivers ic's LV125D > NPX 74LV125D (see attached picture 8 and 9)

when applied 5v on one relay, if 3 relays turn ON this is not OK, only one by one must turn ON (+ is common for all relays, drive with ***8211;, you can test all of them just moving ground)

with bmw problem is on relay pcb, relays are ok, must be 1 of the relay drivers

replace MAX chips on relay board and if Ford not work get new OKI chip

4. check/replace oki chip, some come defective, or replace made in japan > thailand

5. check/replace capacitors (need 47uF 50V for trucks) replace all capacitors on PCB to electrolitic

6. check/replace voltage regulator near capacitors

7. check obd2 connector pins, all straight, not bended

8. check/replace 4 resitors together max1487: R36 (R1143) 47 Ohms, R34 (R1144) 10K, R33 (R1141) 10K, R35 (R1142) 10K or 470 ohms ??? (see attached picture 5)

9. check resitor R58 and capacitors C11 and C5 (different between working and not working autocoms). with 9241A diagram you can see that K line need resistor to Vbat (this is 500ohm on both autocom) and capacitor to GND (measured this capacitance in circuit and on working AC is 40nF and on non working AC is 100nF) or change C11 to 102pF = 1nF
see attached picture 6

10. solder some surface of pcb with hot air (see attached picture 7)

11. open the clone ,get a good flux, remake all soldures of the pcb

12. check/replace IC close to usb port ATMLH124 > 93LC4681
Would a link to a forum where did you go?
Or still images to describe the repairs.

[mick711]

MHH

Include i think that is the problem picture and PDF for tips and trick for control repair VCI ;)

[chrismoore02]

Some good info on here. Think I need to order some parts and give it a go :D

[eiemax]

hello friends, can you tell me where I can buy the IC max4820?

Thanks

[autocentarvu]

@eiemax

maybe here

MAX4820EUP+ - MAXIM INTEGRATED PRODUCTS - DRIVER, RELAY, 8CH, SPI, 20TSSOP | Farnell United Kingdom (http://uk.farnell.com/maxim-integrated-products/max4820eup/driver-relay-8ch-spi-20tssop/dp/2113140?Ntt=max4820)

[eiemax]

Wow, good friends, thanks for the tip.
A last questions: I want change lv125a with 74lv125d. I have buy this, but i received Philips, not NXP. Is the same thing, or i must have only NXP for work with BMW??

[victor2k]

NXP is formerly a division of Philips

[eiemax]

I solved problem with bmw ?

Thanks

[flavyus1987]

I solved problem with bmw ?

Thanks


Solved or not?
How you did this??

[eiemax]

I ask if changing the two chips, solved or not, I do not have it changed, I ask those who already did, if solved