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Title: Trouble reading my ECU with bench harness. Post by: Rick on October 02, 2010, 03:04:26 PM Well today i finally managed to sort out a bench harness to try and read my ECU.
Regulated bench supply, 13.8V with 1A current limit set. I used pin 62 as the ignition live, pin 43 Kline pin 3 as the permanent live and pin 1 as the ground. I think I am getting it into boot mode, as if i don't ground pin24 of the 400BB flash, Galletto says boot mode not active. If i do put it in boot mode, it says reading ECU, waits about 40s then gives me a read error, code 200000. Have I got pins 62 and 3 the right way round? I think I must as i'm getting it into boot mode i think. Any ideas? Rick Title: Re: Trouble reading my ECU with bench harness. Post by: Tony@NefMoto on October 02, 2010, 03:09:24 PM Here is how my bench harness is setup:
Pin 1 ground Pin 2 ground Pin 3 switched ignition 12v from terminal 15 Pin 43 k-line Pin 62 constant 12v battery power from terminal 30 Title: Re: Trouble reading my ECU with bench harness. Post by: Rick on October 03, 2010, 06:03:33 AM I will switch pin 3 and 62, but i think i'm getting boot mode.
I only used one of the ground pins, assumed they were both common points? Rick Title: Re: Trouble reading my ECU with bench harness. Post by: Tony@NefMoto on October 03, 2010, 10:40:27 AM Both grounds should be connected.
Are you grounding a pin on the ECU circuit board to trigger boot mode? Title: Re: Trouble reading my ECU with bench harness. Post by: Rick on October 03, 2010, 10:56:56 AM yes, pin 24 on the flash.
I will try connecting both grounds :) Title: Re: Trouble reading my ECU with bench harness. Post by: okkim on July 15, 2012, 01:47:31 AM Both grounds are not needed. Neither is the the pin 21 as shown in photos here. It works fine at least with the 551D box.
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