lotsa codes where to start

[dubbedup]

ok im getting the following codes on a 93 wrx, are any other them related, the only thing taht is odd is a high idle everything else is sweet as...

14-17 - injectors

44 is wastegate solinod, so hopefully this is just unplugged or a bad vaccumne line etc.

24 is idle controller, so that explains the high idle

31 tps - no idea why this code is spitting out

could this be one thing that is setting of a whole heap of codes

[Guest]

how do you check all these code man?im abit confuesd..alot of people on here say they check there codes and stuuf.id like to hava look at mine.iv had it scaned at the macanics and the only fault was afm.

[dubbedup]

there are plugs under the steering colum, do a search for"how to check engine light" or something similar. or look under electrical forum

[gazzy2000]

engine earths all good and clean? earthing kit cud be the go?

is this the one you wired up?

[dubbedup]

yeah all earths on cleaned and put on ok, was talking to the old owner and he said check engine light came on before it got stolen but did not affect it, as it has started idling high I would like to get this sorted mainly, just dont really know where to start, lol searching for inspiration/motivation as what it could be....

[DRFVDR]

AFM ?????

[dubbedup]

would it not just throw a AFM code?

Any ideas on how to start testing some of these faults?

[rex-leggy]

 dubbedup said:

would it not just throw a AFM code?

Any ideas on how to start testing some of these faults?

haynes manual bro all the diagnostics are in one . it sucks but unless you just start replacing stuff? but that will soon get expensive have ya got a muli meter?

How to test the Throttle Positioning Sensor (TPS)

Here's the procedure out of the chilton's manual to test the TPS switch.

1. Turn the ignition switch ON. 2. Measure the voltage between the ECU connector terminal and ground.

Voltage should be as follows:

Terminal 2 and ground: 0.7-1.6 volts with the throttle fully open

Terminal 2 and ground: 4.4-4.8 volts with the throttle fully closed

Terminal 3 and ground: 5 volts

Terminal 1 and ground: 0 volts

3. Ensure voltage smoothly decreases in response to throttle opening. If measurements are not within specification, check and repair ECU terminals or harness.

4. Disconnect the connector from the throttle sensor. Measure the resistance between throttle sensor terminals 2 and 3. Resistance should be 12 kilo-ohms.

5. Measure the resistance between terminals while slowly opening the throttle valve from the closed position.

Resistance should be as follows:

Terminals 2 and 4: 10-12 kilo-ohms with the throttle valve fully closed

Terminals 2 and 4: 3-5 kilo-ohms with the throttle valve fully open

6. Ensure resistance smoothly increases in response to throttle opening. If measurements are not within specification, replace the throttle sensor.

7. Disconnect connectors from ECU and throttle sensor.

8. Measure resistance between ECU connector and throttle sensor connectors.

Resistance should be as follows:

ECU terminal 1 and throttle sensor terminal 2: 0 ohms

ECU terminal 2 and throttle sensor terminal 4: 0 ohms

ECU terminal 3 and throttle sensor terminal 3: 0 ohms

9. Measure resistance between throttle sensor connectors and ground.

Resistance should be as follows:

Terminal 2 and ground: 1 mega-ohm minimum

Terminal 4 and ground: 1 mega-ohm minimum

Terminal 3 and ground: 1 mega-ohm minimum

10. If resistance is not within specification, check and repair the harness or connector.

Here is a diagram for the pin-outs.

[dubbedup]

cheers mate this is the sorta info i need.

[rex-leggy]

its a bit strange that all your injectors coded up theres something funny going on there lol

[dubbedup]

could it be a voltage thing? the car was stolen and had all the loom chopped, the owner/police recovered the vehicle b4 they took the motor and box out, altho it was all just sitting there ready to pull, but it the bolt on parts were removed, and have since been replaced...

[rex-leggy]

 dubbedup said:

could it be a voltage thing? the car was stolen and had all the loom chopped, the owner/police recovered the vehicle b4 they took the motor and box out, altho it was all just sitting there ready to pull, but it the bolt on parts were removed, and have since been replaced...

do you think they could have cut through the loom while the battery and everything was still hooked up ? could have shorted out everything.

[dubbedup]

hope not, car goes well just has a high idle....

[rex-leggy]

 dubbedup said:

hope not, car goes well just has a high idle....

reset the ecu and clear the codes then bro

[dubbedup]

yep done that but still not dropping the idle back down.

[rex-leggy]

and the codes just came back up ?

[dubbedup]

yep think so, drove round till ecu constantly flashing, turned off, then drove round the block at lunchtime had code 31 flashing thru, then drove home and had all them back...

[dubbedup]

is there a way of testing AFM and Idle and wastegate controllers?

something like what rex-leggy has posted would be ideal,

thanks

[CUDDAS]

semi off topic - i have just put in a re-map'ed ecu to run yellows in my BC5 & i tried to run it with the greys in & my map sensor disconnected,

It threw check light & codes 14 15 16 17 & 45 these being the 4x injectors & the map sensor, so i installed the yellows & hooked up the map sensor & proceeded to clear the codes (It seams to run mint & the air fuel mixtures are good with the Innovative Wideband system hooked up)

But it will only clear the map sensor & still flashes the 4x injectors??? & throws the check light when not in check mode.

Now this is where it gets interesting, after disconnecting the battery,

I removed the re-map ecu & installed my normal modcontrol chipped ecu, re-connected the battery & it started sweet as & did not throw any trouble codes at all NONE..... it idled high so we used the apexi safc to enable it to idle as normal taken out for a few runs & i have removed the map sensor pressure source again, seems ok, but i'd like to know why the other ecu is flashing the just the 4x injector codes when this one is not???

weird aye sorry for the thread-jack but it might have something similar, also running the green afm too

[rex-leggy]

afm cleaning http://www.iwsti.com/forums/how-install/171272-mass-air-flow-maf-sensor-cleaning.html

hope this link works should ave all the tests

http://home.comcast.net/~trilinear/SubaruEA82-ServiceManualPart2.zip

[rex-leggy]

and i gta green afm here if ya need 1

[dubbedup]

thanks, at this stage im going to try a few locally as a test fit to se if it solves the prob, thanks