errer codes

CanadianBak'inSupra · 11-01-2009, 05:00 PM

any help as to narrowing the problem down would be great!

Ignition switch circuit
Ignition switch
Main relay circuit
Main relay

Ill replace all if i have to, but if any one has any past experience with these failing in there supra i would apreciate...

cre · 11-01-2009, 05:21 PM

Specifically what error code are you getting? (typing with acrylic nails is a BITCH)

CanadianBak'inSupra · 11-03-2009, 02:34 PM

i only get error code 11 2 blinks 1 after the other,
already changed the ecu
anything... would be great

cre · 11-04-2009, 01:16 AM

Well, the first line of business would be testing for voltage drop across +B and +B1 at the ECU.

This is more than you need to look at, but it shows the ECU pinout:
http://www.cygnusx1.net/Supra/Librar...ection=FI&P=30

Might also test to see what the drop is across the Batt line as well.

I suspect you're looking at either a bad EFI relay or some bad wiring.

CanadianBak'inSupra · 11-04-2009, 02:11 PM

thanks ill replace those first!

Edit: Electrical / relay / fuses is not my show...
ill take as much info on it as i can thanks for the help!

CanadianBak'inSupra · 11-08-2009, 01:38 AM

ok so i replaced:
all fuses
EFI main relay
Fusible link AM1 40A
Fusible link AM2 30A
(ECU a month ago)

it runs a lil better, but i cannot find the fusible link 2.0L and have yet to change the Fusible link ALT 100A(wich is burnt and ugly lookin, also looks like it melted a spot on
#2 Junction block lid

after that and some other cheking ill look and see if i get any error codes..

cre · 11-08-2009, 07:04 PM

You're on the right path. Hopefully it's not a spot of bad wiring... patching the engine harnesses on these cars sucks.

11-01-2009, 05:00 PM	#1
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	errer codes any help as to narrowing the problem down would be great! Ignition switch circuit Ignition switch Main relay circuit Main relay Ill replace all if i have to, but if any one has any past experience with these failing in there supra i would apreciate...

11-04-2009, 02:11 PM	#5
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	thanks ill replace those first! Edit: Electrical / relay / fuses is not my show... ill take as much info on it as i can thanks for the help! Last edited by CanadianBak'inSupra; 11-04-2009 at 03:06 PM.

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11-01-2009, 05:21 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Specifically what error code are you getting? (typing with acrylic nails is a BITCH)

11-03-2009, 02:34 PM	#3
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	i only get error code 11 2 blinks 1 after the other, already changed the ecu anything... would be great

11-04-2009, 01:16 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Well, the first line of business would be testing for voltage drop across +B and +B1 at the ECU. This is more than you need to look at, but it shows the ECU pinout: http://www.cygnusx1.net/Supra/Librar...ection=FI&P=30 Might also test to see what the drop is across the Batt line as well. I suspect you're looking at either a bad EFI relay or some bad wiring.

11-08-2009, 01:38 AM	#6
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	ok so i replaced: all fuses EFI main relay Fusible link AM1 40A Fusible link AM2 30A (ECU a month ago) it runs a lil better, but i cannot find the fusible link 2.0L and have yet to change the Fusible link ALT 100A(wich is burnt and ugly lookin, also looks like it melted a spot on #2 Junction block lid after that and some other cheking ill look and see if i get any error codes..

11-08-2009, 07:04 PM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	You're on the right path. Hopefully it's not a spot of bad wiring... patching the engine harnesses on these cars sucks.