boot mode question

[donesko]

I need to put ecu in boot mode, do I need to do connect pins of ecu on bench or can I use car harness and read it trough car's obd port .For example connect pin 24 to ground for 2secs and then read it from car's obd.

[Anmed]

I've done so and so, choosing as appropriate.

[rsibiza]

I need to put ecu in boot mode, do I need to do connect pins of ecu on bench or can I use car harness and read it trough car's obd port .For example connect pin 24 to ground for 2secs and then read it from car's obd.


In Boot @Table some flashtools use lot higher data transmissison as on OBD...so it may cause some problems...

But theoretically possible...

[donesko]

So I finaly tried it on table it's smart meg 1.0 ecu 261205004
ECU layout is same as in this picture
http://wiki.obdtuning.com/images/d/d1/MCC_Smart_MEG_10_11_Platine1.jpg
I used this schema to connect +12,gnd,kline and connect it to MPPS
http://wiki.obdtuning.com/images/c/c8/MCC_Smart_MEG_10_11_Skizze1.jpg
Can't get ecu info.
Tried with same wires on other ecu's like IAW59 and it works flawlessly.
Are connections in these pictures ok?. How long boot pin should be connected to GND? 2sec or more?
I'm useing pc atx power supply, get's only 11.5volts is this problem?

[pablo1971]

i no on the 29f400/29f800 the boot pins are different depending on what processor it has...ie bosch or siemens

[donesko]

i no on the 29f400/29f800 the boot pins are different depending on what processor it has...ie bosch or siemens

it's bosch ecu
now I found this pdf
it says to connect 4pins to +12 and 4pins to GND?

[zsoltika]

BOSCH:
put to gnd flash 24pin
switch on power supply
up to gnd flash 24pin
id,read,write now possible in boot mood

[zsoltika]

this wiring is work good

[wiseman]

ground your pin for 5 secs not 2 secs.

[donesko]

I tried again today, connected like in byteshooter picture but still can't read. I also tried with galletto and got zeros in ecu info and when reading message Start reading.. BOOT MODE INACTIVE.

[pablo1971]

have you earthed out the boot pin on the 29f

[pablo1971]

sorry,at a closer look i can see the boot wire......have you tried it without the 100 ohm resistor in....:party:

[donesko]

sorry,at a closer look i can see the boot wire......have you tried it without the 100 ohm resistor in....:party:

it's 5.0k ohm ? no I havent tried without resistor

[leolux]

I tried again today, connected like in byteshooter picture but still can't read. I also tried with galletto and got zeros in ecu info and when reading message Start reading.. BOOT MODE INACTIVE.

HI have same problem... i dont get ecu in bootmode if i do id get only zeros have teste with 1000ohm and without resitor same result... any help thx

[leolux]

HI have same problem... i dont get ecu in bootmode if i do id get only zeros have teste with 1000ohm and without resitor same result... any help thx

HAve found the Issue for other user with same problem.... Its timout problem....

if Galletto say put pin 24gnd you must be click okay thans wait 1 second and after that take power on ecu with boot pin on it works perfect.... if you start ecu bevor they dont read and error cames up....

Leo

[joker01]

so the resistance on the boot cable how much should it be ???

[maajkii]

1ohm...............