tuning issues

[Dillon Dollar]

Ugg for electrical gremlins. Good luck Dillon!

No blown fuses anywhere?

Not that I can find I think it has somethin to do with the abs light and the traction control being shut off

 

[JeremyH]

Yeah def could be.

 

[Dillon Dollar]

Yeah def could be.

I just don't know where to start to chase it down

 

[oh5gt]

Is the mileage showing up on the dash or is it just bars?

 

[Dillon Dollar]

Is the mileage showing up on the dash or is it just bars?

I believe it was just bars but i luckially got it to take the stock tune


What do the bars mean

 

[Dillon Dollar]

Replaced the bad ends of the power wire and made sure there was a good connection and checked all the fuses so i decided to upload the tune and it failed during tuning, so I tried to turn it back to stock and it failed while turning it back to stock so now the car is dead again...


I'm lost any ideas

 

[Dillon Dollar]

Update


I disasembled the fuse box pcm and all the passenger side grounds and blew all the connectors out wig air it is now reassembled and it turned the car back to stock and then i tried to upload the custom tune, and once again I'm shit out of luck

 

[Makdaddy]

Can you get another PCM to flash to

 

[Dillon Dollar]

Can you get another PCM to flash to

Not that i know of I thought of tryin my handheld on another car, but if my pcm was bad it couldn't be flashed at all

 

[lito]

Can you remove relays and fuses for other stuff so you can basically leave the pcm alone at the time of flashing?

 

[Dillon Dollar]

Can you remove relays and fuses for other stuff so you can basically leave the pcm alone at the time of flashing?

Id have to figure out what goes to what, do you think its possible that somethin is interfering with the signal, like somethin possibly pulling power away during a download of a tune

 

[Dillon Dollar]

It's all disconnected going to let it sit overnight and try some electrical cleaner tomorrow

 

[lito]

Id have to figure out what goes to what, do you think its possible that somethin is interfering with the signal, like somethin possibly pulling power away during a download of a tune

I would try to isolate the PCM at flash time, the only other devices that share the HS CAN bus are IC and ABS, unplugging the ABS may lead into trouble as I think (never checked) that the termination has to be in the in the control module, if so, doing this may render into the impossibility to access the PCM temporarily.

I would take the power out of the ABS at least. IIRC there are 3 fuses for it, some are for the HCU pump but I would remove all three.

 

[Dillon Dollar]

I would try to isolate the PCM at flash time, the only other devices that share the HS CAN bus are IC and ABS, unplugging the ABS may lead into trouble as I think (never checked) that the termination has to be in the in the control module, if so, doing this may render into the impossibility to access the PCM temporarily.

I would take the power out of the ABS at least. IIRC there are 3 fuses for it, some are for the HCU pump but I would remove all three.

Alright ill try to figure out the fuses for the abs remove them and then try to reflash the computer

 

[lito]

Manuals say F8 and F65 of the BEC and F18 from the SJB.

 

[Dillon Dollar]

Manuals say F8 and F65 of the BEC and F18 from the SJB.

Yeah iv been doing a lot of reading and some peoole who have had bad abs modules could not pass emmissions because a scan tool could not connect to the computer.



Lito would ig hurt if I unplugged the module completely and attempted to flash thr car

 

[lito]

Lito would ig hurt if I unplugged the module completely and attempted to flash thr car

Hurt no, but it may not work, test it as you can't damage it with this (as long as you remove the battery while doing it), if the terminator is in the module it may not allow you to connect to the PCM, try it and report back.

Edit, if that way it does not connect to the PCM, plug it back with the fuses removed.

 

[Dillon Dollar]

Hurt no, but it may not work, test it as you can't damage it with this (as long as you remove the battery while doing it), if the terminator is in the module it may not allow you to connect to the PCM, try it and report back.

Okay will do

 

[Dillon Dollar]

Okay good news i unplugged the abs module and the car uploaded the stock tune, then it finally uploaded the aftermarket tune, and finally uploaded the stock tune again, so it appears to be working


Is the module bad?

 

[lito]

Maybe, if want to change it, IIRC you only need the electronics as the pump body is the same.

Edit: In the mean time you could have your tuning process done with it unplugged and then reconnect and see how it goes.