Diy To Do Diagnostic On An R33 S2

[xr8eater]

i have a stall problem on my S2 so i took the kick pannel off the passenger side got the ecu out to do the diagnostic check. swiched the ignition on and no lights, on closer inspection there is the holes to view the lights and a hole for the screw but none of its there is ther any other way to do this with out a consult unit.

and why dont i have lights????

Edited April 2, 2008 by xr8eater

[teng]

http://usagtr.googlepages.com/skyline_book.pdf

Download and read the book. It may hold alot of answers to your skyline.

[xr8eater]

yes it does but not this one

[teng]

My R33 S2 doesn't have lights on it's ECU either but at least mine doesn't have holes like the one you described. I haven't seen R33 Ecu having lights yet though. Most of the ECU i've seen are the concealed type.

[xr8eater]

so back to my first question how do you do the diagnostic check then

im baffeld even the service manual says they have lights

[Jmaac]

Light on your dashboard should flash with it also

[xr8eater]

no flashing lights on the dash either what prosess are you doing it in Jmaac?

[Jmaac]

You have to switch the car to the right diagnostic mode by shorting some terminals on the diagnostic plug. Its all in the workshop manual

That probably wont help with your stall issue, clean afm, aac etc. and go from there

[xr8eater]

i have cleaned the afm and aac is there any pics on how to do the shorting out prosess the work shop manual only has consult interface ways of doing it??????????

[xr8eater]

ok after alot of messing about

i will finaly give you guys a way to do a diagnostic on an S2 with no lights on the eccs

first find the consult plug in the fuse bos next to the steering wheel as in pics

next remove the plug end and turn your car to the on position dont start it

get a paper clip and insert into only the holes shown for 2 seconds and remove

your engine check light should start to flash a series of codes

ECU Diagnostic Codes

11 Crankshaft position sensor

12 MAF sensor circuit (air flow meter)

13 Coolant temperature circuit

14 Vehicle speed sensor circuit

21 Ignition circuit

31 ECU (ouch!)

34 Knock sensor

43 Throttle position circuit

45 Injector leak

51 Ignition circuit

54 Auto signal to ECU

55 All OK

Turn the ignition off to put the ECU back to normal and clear all faults.

to check the o2 sensor follow the prompts above but dont tun the ignition off just start the car the check light will flash off for rich on for lean.

Edited March 16, 2008 by xr8eater

[Jmaac]

Yeah I was going to say everyone scans over the consult bit but it is actually in there!

[Jmaac]

Also your ecu will remember the fault codes for a approximately 50 starts, even if its been fixed since! must do reset

[xr8eater]

even with the standard reset disconecting the battery will not clear the diagnostic you have to perform the diagnostic to fully clear it

[thirtythree-II]

did the diagnostic test which worked perfrectly.... came upp with no. 12 afm prob.

my consult plaug didnt have the black plug connected in it, is just opened....

also are r33 s1 ecu identical with their terminal connector numbers as a r33 s2.

I need to check the continuity of terminal no. 26 & 27 which relate to the afm sensor wires.

[xr8eater]

my one came up with that problem a quick clean of the afm and off she went

[delljit]

mine comes up with 55 (no errors) and my idle is all over the place sometimes, including the odd stall.

[xr8eater]

go to DIY section and do an aac clean

clean your afm also

Edited March 31, 2008 by xr8eater

[dori34]

r32's dont have this consult port do they??

[xr8eater]

they do but the ecu has lights to conduct the test

[Stormchaser]

Im having problems with the airbag light staying on. Would either the shorting the two wires in the diagnostic plug remove it or using the consult?