Supra Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
1,419 Posts
Discussion Starter #1
Guys last night after driving for about 10 minutes the warning light (!) only came on in the tachometer. There was no other light that came on with that.

Currently I do need to install my O2 sim for the check engine light (O2 sensor) but this was not the same because I can reset that by reseting my ECU. I tried to reset my ECU but had no luck the light would not go off!! Eventually I got sick of it and went to sleep and this morning I checked it again and it was still on.

Do you guys know what and why this is coming on? I checked all my hoses, oil levels, brake fluids, coolant, power steering fluids, parking brake lever, etc. There is no loss in performance nor any strange noises.

What should I do?
 

·
Administrator
Joined
·
4,970 Posts
Taimur said:
Guys last night after driving for about 10 minutes the warning light (!) only came on in the tachometer. There was no other light that came on with that.

Currently I do need to install my O2 sim for the check engine light (O2 sensor) but this was not the same because I can reset that by reseting my ECU. I tried to reset my ECU but had no luck the light would not go off!! Eventually I got sick of it and went to sleep and this morning I checked it again and it was still on.

Do you guys know what and why this is coming on? I checked all my hoses, oil levels, brake fluids, coolant, power steering fluids, parking brake lever, etc. There is no loss in performance nor any strange noises.

What should I do?
Check you engine trouble codes as described on www.mkiv.com
 

·
Registered
Joined
·
1,419 Posts
Discussion Starter #3 (Edited)
I saw the mkiv trouble codes page below
http://www.mkiv.com/techarticles/engine_codes/obd2_codes.html
but, sorry for my ignorance, how do I read these codes. Do I need to go the Toyota dealer or get a device or something?

Also shouldn't the ECU reset the error codes when I reset the ECU ?? Which I did but had no luck with the center light.
 

·
Administrator
Joined
·
4,970 Posts
Take a wire or half a paper clip ( in a U shape) and connect the TE1 & E1 ports as explained below.

Count the number of times it flashes to get each number.

DIAGNOSTIC TROUBLE CODE CHECK

Turn ignition switch on.
Connect terminal between TE1 and E1 of data link connector 1 or 2.
Read the diagnostic trouble code from malfunction indicator lamp. HINT: If a diagnostic trouble code is not output, check the TE1 terminal circuit.
Check the details of the malfunction using the diagnostic trouble code table (see table below).
After completing the check, disconnect terminals TE1 and E1 and turn off the display. HINT: In the event of 2 or more malfunction codes, indication will begin from the smaller numbered code and continue in order to the larger.

You open the cap on the diagnostic port which is labeled and is on the firewall on the passenger's side.
 
1 - 4 of 4 Posts
Top