GQ-4X will not write 93c56

[klaudio]

Hi forum,

I'm trying to write a 93c56 with a GQ-X4 and is not working, does someone knows if there is a way write it?

programmer say writing, but when verify it fails.

cheers,

[daniersms]

Try to write in 16bit and 8 bit just maybe that could be the problem

[klaudio]

Try to write in 16bit and 8 bit just maybe that could be the problem

tried 8bit 16bit, different eeprom from list, no luck, i google that removing pin 6 to 8 might work, then again, no luck.

open to any suggestions, this is my first time with 93c56

trying to program a suzuki liana, got the immo 93cl66 programmed, i removed 93c56 on ecu but won't write

[m-o-y]

you need clean chip pins
and to confirm all pins connected. then it read and write with success .
good luck

[rokibar]

try with lower voltage. i use in my programers 2.75v when no want write tham and allweys ok.

[klaudio]

you need clean chip pins
and to confirm all pins connected. then it read and write with success .
good luck

Done all that more than once, i even apply solder and remove just to be sure i had clean pins, I will clean my clips just to see if that is the problem.

[klaudio]

try with lower voltage. i use in my programers 2.75v when no want write tham and allweys ok.

programmer does not give me option for voltage, can only test, is automatic and is using 5v, see result from test

*****************************
* Testing VCC Without Load *
*****************************
VCC 3.6V test passed (code:0x6)+
VCC 5V test passed (code:0x1)-
VCC 5.5V test passed (code:0x2)-
VCC 6.2V test passed (code:0x12)-
VCC 6.5V test passed (code:0x18)-
*****************************
* Testing VPP Without Load *
*****************************
VPP 3.6V/5V test passed (code:0x9)-
VPP 12V test passed (code:0x8)+
VPP 12.7V test passed (code:0x2)+
VPP 15V test passed (code:0x4)+
VPP 21V test passed (code:0x3)-
VPP 25V test passed (code:0x5)+
*****************************
* Test Completed *
*****************************

Message log after writing

Writing... Buffer
Elapsed time: 0.92 seconds.
Device write completed OK
Verifying... Buffer
Verify Failed, Address=0x000000, Device=0xF9, Buffer=0xA0
Verify Failed
Elapsed time: 4.54 seconds.
Speed = 1

[rokibar]

who is chip manufacturer? choised right one? try firichild than your programmer will use low voltage. will know is there problem??????

[lupu_sandu]

Are you sure that is 93c56 or is 93CS56?

[daniersms]

Ok if you want you can send me the file and I will try with my Willem to write a chip and see if it writes or not

[klaudio]

who is chip manufacturer? choised right one? try firichild than your programmer will use low voltage. will know is there problem??????

Manufaturer F
fairchild, that's a whole new game for me, I'm fairly new at this, leave in a small country, no electronic parts supply, , everything i need i have to order from new zealand or u.s., i guess i'm stuck for the time being, does anyone know if x431 will match ecu to immo?

[klaudio]

Ok if you want you can send me the file and I will try with my Willem to write a chip and see if it writes or not

ECU liana 93c56.rar

thanks, by the way it is 93c56

[budG60]

Smd ic? If yes, no short circuit or bad contact in your adapter?

[klaudio]

Smd ic? If yes, no short circuit or bad contact in your adapter?

checked several times, disconnected and reconnected, i don't think that's the issue, I can erase, once erased it verifies, after it won't write, did a blank check no results.

[scoot]

try reload software from mcu mall