Repair Autocom CDP VCI

Repair Autocom CDP VCI Test interface with usb cable, not bluetooth use software without internet connection or add "12!!!1 acti#ation!autocom!se" to C$%&indows%s'stem(2%dri#ers%etc%hosts file firmware must be up)raded with #ci connected to car, and to pc with usb cable *ost important is Chan)e R+ and R - 2 ./line trancie#ers and will be 0. on *& 3 and 4!

 You have to change all together 5 If chan)e first ./line trancie#ers and than connect to an' brand of car, you will have to buy another pair of trancievers56 trancievers56 1! chec78replace 2 resitors 9 (4 ohm$ R+8R :*D ones should be mar7ed 391 or 3900 ;not (4R < (4 ohm, not ( < ( 0hm6 2! chec78replace poor =ualit' Vishay or SI9241 ./line transcei#ers 9 9241A

Chec7 #olta)e on . and > line with multimeter! 0n idle 'ou must ha#e about 12V on them! &hen 'ou start communication with car lines shortl' )o down on about 1V! If 'ou don?t )et that #olta)e drop tr' to chec7 si)nal on T@ input of 9141 I!! I!! If 'ou ha#e some pulse ;i thin7 from "#V to #V6 #V6

durin) initialiin) of connection with car then 9241 I! is surel' defecti#e

ma'be transcei#er is o7, chan)e (!4 or (4 ohm 9 #$0 ohm on pull/up resistor of SI9241 ;or 4%0 ohm up to 1 &oh'6 (! chec78replace rela's$ bad ./>ine comunication$ 1 rela' in rela' board freee to position "0B"! open the rela' with a 7nife and I set the wei)ht inside the sprin) to automaticall' switch to the 0 position

&hen CDP powered and connected to :, run :& and connect to an' car ;no need for a real car56 and then )o bac7 to main :& window! measure rela' coils and see how man' are 0B$ ( rela's must be 0B when in this window5 If onl' 2 are 0B *& 3 and 4 don?t wor75 onl' 2 red mar7ed must be 0B when standb', both 2 red and 2 )reen mar7ed ;1 rela' for obd pin 1 and 1 rela' for obd pin  and 16 must be 0B with bmw

replace rela's dri#ers ic?s (V12#) 9 *+, %4(V12#)

when applied # on one rela', if ( rela's turn 0B this is not 0., onl' one b' one must turn 0B ;is common for all rela's, dri#e with E, 'ou can test all of them Fust mo#in) )round6 with bmw problem is on rela' pcb, rela's are o7, must be 1 of the rela' dri#ers replace *A@ chips on rela' board and if ord not wor7 )et new 0.I chip +! chec78replace o7i chip, some come defecti#e, or replace made in Fapan 9 thailand ! chec78replace capacitors ;need 4%u- #0V for truc7s6 replace all capacitors on PC to electrolitic 3! chec78replace #olta)e re)ulator near capacitors ! chec7 obd2 connector pins, all strai)ht, not bended

G! chec78replace + resitors to)ether maH14.%$ /3$ ;/11436 + 0hms, /34 ;/11446 1., /33 ;/11416 1., /3# ;/11426 1. or + ohms 

4! chec7 resitor /#. and capacitors !11 and !# ;different between wor7in) and not wor7in) autocoms6! with 9241A dia)ram 'ou can see that . line need resistor to Vbat ;this is #00oh' on both autocom6 and capacitor to JBD ;measured this capacitance in circuit and on woring AC is 40n- and on non woring AC is 100n-6 or chan)e !11 to 102p- < 1n-

1! solder some surface of pcb with hot air 

11! open the clone ,)et a )ood fluH, rema7e all soldures of the pcb 12! chec78replace IC close to usb port A(124 9 93(!4$.1