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How to check diagnosis?; what error codes mean what?
Topic Started: Nov 18 2008, 10:36 AM (920 Views)
blah
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Stage 4
I'm looking for info on the OBD-II connection in the AE111.

Just general research shows that CAN protocol for our gen. toyotas is should be ISO 9141-2. Does anyone know if this is so?
Where abouts is the connector, is it on the ECU behind the headunit (according to schematics on toyodiy)?
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kyleseo
Stage 5

It should be the diagnostic port in the engine bay.
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blah
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Stage 4
Where abouts in the engine bay is this?

I couldn't find it last time I looked
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AceSniper
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Global Moderator

you would need a toyota scaner that plugs into the diagnostic port, no obd plugs
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blah
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Stage 4
So the ae111 doesn't have a standard OBDII port? Where abouts in the engine bay is the diagnostic port?
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AceSniper
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just bridge the diagnostic connector and read the engine light flashes... will give any info you need... why do you want to connect up?
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blah
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Stage 4
Going to add a computer to the car, set it up with touchscreen for gps, mp3 and vids. Also want to get obdII readouts so that I can monitor it through the display.

I've been googling, but can't seem to determine whether the 20v BT is OBDII or not, getting hits saying yes it is and others contradicting it.

Where abouts is the diagnostic port located?

-------------------------------------------------
Found the port, right next to the fuse box, not sure why I didn't notice it.....
I'm pretty sure that's not an OBDII port, so looks like that monitoring idea is down the drain....
Edited by blah, Dec 11 2008, 01:19 PM.
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BZR4AGE
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JDM TODA
There are no OBDII plug in the AE111. I've try hooking up a Greddy touch informer, but googled and found that there are actually no OBDII plug. Then I've try to find a conversion plug for our diagnostic to OBDII, which also does not exists.

The conclusion from googling is that if your car have "diagnostic" there are no OBDII. The diagnostic plug is at the front right behind the air filter next to the coil.
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AceSniper
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depends on the displays inputs, you could wire it into the loom the obd plug thing is just for ease
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BZR4AGE
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JDM TODA
hey ace! yea I thought about that aye...but the wrost thing is the Greddy Touch informer didn't have any wiring diagrams....and I kind of given up on trying to wire it in!

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JDM
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AE111
do i have to take the car to toyota or can i do it with my laptop?
if so i take it i need a special lead and software?
if thats the case where can i get those parts?

lol, thanks
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TRUENOSAM
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Stage 6
You will need the special software wich will be hard to aquire and also the leads.

Reamember the AE111 does not have the OBDII connector socket that vehicles have over here

Dont know about you but my local Toyota dealer could only cater for OBDII fitted cars, Not grey imports

jdm
Sep 6 2009, 10:53 PM
how much do you think Toyota will charge for checking this? if they can.
Checking what exactly? For a code read (if they can do it) will probaly be charged at 1/2 hours labour
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AceSniper
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just do the te1 e1? what ever it is bridge and count engine light flashes, that's all any auto sparky will do with toyota obd1 look it up on google easy
Edited by AceSniper, Sep 7 2009, 02:30 AM.
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kyleseo
Stage 5

As Ace said, you'd be paying someone to do what you could do yourself in about 60seconds.

Get a paper clip, unravel it, open the diagnostic port cover in the engine bay, stick one end of the clip in E1 and one end in TE1, get in the car and turn the key to ACC and count how many times the CEL flashes, then match that to the relevant problem. Codes and problems can be found online.
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JDM
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AE111
cheers for your help guys.

fecking brilliant!!!!!! will do this soon as im fully awake. lol

thank you again

got no flashes ^_^
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JASE
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Stage 6
no flashes = no faults :thumbsup:
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JDM
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kyleseo
Sep 7 2009, 02:40 PM
Can't remember whether Toyota's system just flashes constantly or whether the CEL light just remains on if there are no faults. If the CEL light came on then disappeared as normal then the terminals wern't connect.
on the first key click (ACC) there were no flashes.

and on the second click, it flashed constantly.
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kyleseo
Stage 5

Your fine then.

May well be a click after ACC actually, been ages since I did it.
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bigshark
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Stage 6
sorry for sounding like a noob but what is CEL?
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kyleseo
Stage 5

Check Engine Light. The orange engine warning light on your dash.
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bigshark
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Stage 6
cheers!! it sounds easy enough to self diagnose your car!! :D

must try it one day
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AceSniper
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ecu will only give sensor faults that it can detect... like a oxy sensor will keep having a output but its wont be correct the ecu dosnt detect the oxy heater if that's blown.
If you have a blocked fuel filter/bad plugs/leads all that kind of thing the ecu wont pick it up...

Most of the time if the ecu has codes the cel will come on while your driving.

Newer cars the ecu detects alot more but it also can be a pain... silly little things that may not matter get picked up or you replace a part that's non oem it wont fix the problem.
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JDM
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AE111
Hi guys, did the diagnosic on my gf's car today (94 toyota starlet - ep82), and the flashes i got were as follows:

1 flash, pause, 2 flashes, pause, 3 flashes, pause, then 4 flashes.

it kept doing that over and over.

can someone tell me what they mean?

thanks.
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JASE
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Stage 6
OBD1 Codes

1 Normal Condition.
2 Air Flow Meter signal.
3 Ignition signal.
4 Engine Coolant Temperature Sensor signal.
5 Oxygen Sensor.
6 RPM signal (Crank Angle Pulse).
7 Throttle Position Sensor signal.
8 Intake Air Temperature Sensor signal.
9 Vehicle Speed Sensor signal.
10 Starter signal.
11 Switch signal.
11 ECU/ECM.
12 Knock Control Sensor signal.
12 RPM signal.
13 Knock Control CPU (ECM).
13 RPM signal.
14 Turbocharger Pressure.
14 Ignition signal.
21 Oxygen Sensor.
22 Engine Coolant Temperature Sensor signal.
23 Intake Air Temperature Sensor signal.
24 Intake Air Temperature Sensor signal.
25 Air-Fuel Ratio Lean.
26 Air-Fuel Ratio Rich.
27 Sub Oxygen Sensor signal.
28 No. 2 Oxygen Sensor signal.
31 Air Flow Meter signal (Vacuum Sensor signal).
32 Air Flow Meter signal.
34 Turbocharger Pressure signal.
35 Turbocharger Pressure Sensor signal.
35 HAC Sensor signal.
41 Throttle Position Sensor signal.
42 Vehicle Speed Sensor signal.
43 Starter signal.
51 Switch signal.
52 Knock Sensor signal.
53 Knock Sensor signal.
54 Inter-cooler ECM signal.
71 EGR System.
72 Fuel Cut Solenoid signal.
78 Fuel Pump Control signal.
81 TCM Communication.
83 TCM Communication.
84 TCM Communication.
85 TCM Communication.
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JDM
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AE111
JASE1
Sep 19 2009, 04:11 PM
JDM
Sep 19 2009, 04:05 PM
so she has 4 different codes? 1,2,3, and 4?

what are the chances lol.
is the ep82 the turbo or non

as far as i am ware you add the first and second together some one correct me if im wrong

first code is 1 pause 2 flash = code 12
second code 2 pause 4 flash = code 34
oh dear, its the turbo version.

so you add the 2 codes together?

with honda it would be 1 long flash then 2 short flashes to make 12.

can anyone confirm what toyota codes do?

thanks for your help Jase.


so just to re-cap, it flashed once, paused then flashed twice, paused then flashed 3 times, paused then flashed 4 times.

cheers guys
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mike ae111
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new ae111 coming soon
you count the flashes that are a half a second apart then at the end of it there will be a 2.5 second delay till the next on starts

does anyone know what pins do i join to get the abs codes??
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1i1
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NZ Toyota Parts Guy

I would assume that the it'll be the same as a NZ new delivered Corolla (4AFE). According to manual its Tc and E1

kyleseo
Sep 8 2009, 06:50 PM
Yeh it's a decent enough system, you'd feel robbed if you payed a dealer to do it :D

It's not a 100% accurate method though. Things on the car can still be faulty and the ECU won't throw a code. O2 sensor is a good example, it could be on it's way out and causing running problems but until it fails to a certain point, no code will be thrown up.

Just bear in mind, if the car isn't running right but the ECU has no errors it might just be that the problem isn't severe enough for it to have been picked up on yet.
Some dealers are nice and may not charge to chuck the tester onto a car ;)

You can check the o2 sensor by pluging in the correct tester and watching its operation. Very cool to see that your o2 sensor is doing what it should be
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clarkey
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Stage 3
i got 3 flashes when i bridged the ports.. it says ignition signal.. in plain english whats wrong with my car so? is there a sensor that needs replacing?
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Tommy
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Wakaba
JASE1
Sep 19 2009, 03:52 PM
OBD1 Codes

1 Normal Condition.
2 Air Flow Meter signal.
3 Ignition signal.
4 Engine Coolant Temperature Sensor signal.
5 Oxygen Sensor.
6 RPM signal (Crank Angle Pulse).
7 Throttle Position Sensor signal.
8 Intake Air Temperature Sensor signal.
9 Vehicle Speed Sensor signal.
10 Starter signal.
11 Switch signal.
11 ECU/ECM.
12 Knock Control Sensor signal.
12 RPM signal.
13 Knock Control CPU (ECM).
13 RPM signal.
14 Turbocharger Pressure.
14 Ignition signal.
21 Oxygen Sensor.
22 Engine Coolant Temperature Sensor signal.
23 Intake Air Temperature Sensor signal.
24 Intake Air Temperature Sensor signal.
25 Air-Fuel Ratio Lean.
26 Air-Fuel Ratio Rich.
27 Sub Oxygen Sensor signal.
28 No. 2 Oxygen Sensor signal.
31 Air Flow Meter signal (Vacuum Sensor signal).
32 Air Flow Meter signal.
34 Turbocharger Pressure signal.
35 Turbocharger Pressure Sensor signal.
35 HAC Sensor signal.
41 Throttle Position Sensor signal.
42 Vehicle Speed Sensor signal.
43 Starter signal.
51 Switch signal.
52 Knock Sensor signal.
53 Knock Sensor signal.
54 Inter-cooler ECM signal.
71 EGR System.
72 Fuel Cut Solenoid signal.
78 Fuel Pump Control signal.
81 TCM Communication.
83 TCM Communication.
84 TCM Communication.
85 TCM Communication.
Are these relevant to my Trueno? or the is it for the Starlet posted above? Or both?
Edited by Tommy, Jan 10 2010, 11:32 PM.
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bigshark
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Stage 6
i was thinking that as 34 and 35 is 'turbo charge pressure / sensor signal??'
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joyce
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Levin-it-up
i tried the diagnostics there and my engine managment light just keeps flashing..no pauses or anything??

Anybody know whats up??
Edited by joyce, Jul 26 2010, 04:26 PM.
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Ikenty
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BZ Touring Carib
joyce
Jul 26 2010, 04:25 PM
i tried the diagnostics there and my engine managment light just keeps flashing..no pauses or anything??

Anybody know whats up??
You are normal then.
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joyce
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Levin-it-up
awh didnt want to hear that! Gettin a oxygen sensor to see if thats the problem
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