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aimen96
7th June, 2022, 07:52 PM
Greetings

Got P56041 634AE for jeep XJ 2001 with Motorola HC11k4 I tried to reed it for for immo off with clone UPA USB but couldn't read it at all 😕, tried different options like lift pins Reset, Moab and MoabA but every time it keeps getting an error " device no respond"
Now I desolder it out but it's still not reading.

Test connections all green ok except VSS black 0V.
Test hardware all test passes except except test 20 4.01V " range 4V tp 5V" I don't know whether it's the problem ir not.
Maybe the problem with the 24c128 Eeprom of the UPA-USB v1. 3r2

aimen96
9th June, 2022, 12:31 PM
I solved it the problem was in the clock Oscillator must add 8Mhz with 2 capacitors in pins 73 & 74 and connect all 3Vss and 3 Vdd now it reads like a charm.

Any helps with immo off file for this ECU
P56041 634AE??

alfa8x
20th October, 2022, 02:45 PM
Hi I also have this problem, I can't read this processor on a P56041 305AD control unit of a Wrangler 4.0. can you tell me how did you do it?919812

Cdoc
18th August, 2023, 09:54 AM
do you have more pictures please

I solved it the problem was in the clock Oscillator must add 8Mhz with 2 capacitors in pins 73 & 74 and connect all 3Vss and 3 Vdd now it reads like a charm.

Any helps with immo off file for this ECU
P56041 634AE??