checking ecu

hbski · 06-13-2010, 05:37 PM

i am testing my ecu. B+ to e1 and the tsrm says there should not be voltage.i have voltage.does this mean the ecu is done. thanks.

cre · 06-15-2010, 05:22 AM

Where do you read that there's not supposed to be any voltage across the two? Allowing for leakage there going to be at least a little, but given that E1 is the ECU ground I fail to see how it is possible for there not to be voltage across them during normal operation.

hbski · 06-15-2010, 10:47 PM

well it's true, reading > than me. if i read it right the second time,there should be voltage with the ignition switch on.

cre · 06-16-2010, 12:50 AM

Gotta say.. you sure had me for a moment... I was thinking you'd found one of the biggest typo's in that book to date (there are some, compare the wiring diagrams in the TEWD to the TSRM some time.

).

So, all's well?

hbski · 06-16-2010, 01:51 AM

things are getting better.at least it's not the ecu.and thanks for your time.

06-13-2010, 05:37 PM	#1
hbski Stock Join Date: Jun 2010 Location: canada Posts: 10	checking ecu i am testing my ecu. B+ to e1 and the tsrm says there should not be voltage.i have voltage.does this mean the ecu is done. thanks.

06-15-2010, 05:22 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Where do you read that there's not supposed to be any voltage across the two? Allowing for leakage there going to be at least a little, but given that E1 is the ECU ground I fail to see how it is possible for there not to be voltage across them during normal operation. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-16-2010, 12:50 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Gotta say.. you sure had me for a moment... I was thinking you'd found one of the biggest typo's in that book to date (there are some, compare the wiring diagrams in the TEWD to the TSRM some time. ). So, all's well? __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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06-15-2010, 10:47 PM	#3
hbski Stock Join Date: Jun 2010 Location: canada Posts: 10	well it's true, reading > than me. if i read it right the second time,there should be voltage with the ignition switch on.

06-16-2010, 01:51 AM	#5
hbski Stock Join Date: Jun 2010 Location: canada Posts: 10	things are getting better.at least it's not the ecu.and thanks for your time.