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The mkiv Supra Owners Club

VVTI TT fault code query


jonc

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My car went into limp home yesterday:rolleyes: Whilst accelerating up a hill she just died (but kept running) and I had to use a lot of throttle to keep her going.

 

She idles perfectly and has started first time every time since last night.

 

First time ever in a long time of ownership so I cant complain. My Bluetooth OBD2 connection does not seem to be talking to my torque software at the moment so I used the paper clip trick between Tc and E1 (For VVTI) and I got two codes 19 and 59 from the engine light and neither make any sense as they are not in my manuals or on the web:(

 

Has anybody else come across these codes?

 

The car is a 98 VVTI TT tiptronic BPU. I am going into the man cave for another play but if anybody has any guidance it would be appreciated :D

 

Cheers

 

Jon

Edited by jonc (see edit history)
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Dunno about the codes, not got time to look them up, but the description of your issue sounds like a drive by wire issue where the throttle position sensors are playing up and not agreeing with each other.

 

Thanks Chris that's what I have been looking at this evening mate. I think I will try a reset first:-

 

Turn the key to the “ON” position, push foot completely down on the throttle pedal for 30 seconds, you will hear a beeping/humming sound while the ETCS-i system resets, turn the ignition to “Off”. Now turn the car back over and re-test to see if you have any symptoms.

 

I will also check the following:

 

Throttle control motor –

Resistance between terminal 3 (CL-) and 4 (CL+) – 4.2 – 5.2 W at 20°C (68°F)

Resistance between terminal 1 (M+) and 2 (M-) – 0.3 – 100 W at 20°C (68°F)

 

Throttle Position Sensor –

Resistance between terminals VC and E2 – 1.2 – 3.2 kW at 20°C (68°F)

TPS Voltage – 0.3-0.9 volts (Idle), 3.5-4.7 volts (WOT)

 

 

Accelerator Pedal Position Sensor –

Resistance between terminals VC and E2 – 1.2 – 3.2 kW at 20°C (68°F)

Voltage – 0.3 – 0.9 volts (idle)

 

Try an ecu reset first

Pudsey may know more ref codes

 

Hello bud hows it going? yea I was going to reset the ECU as well as looking at the above. Fell out of love with the Sup over the summer so thought I would give her a try at regaining that love and this is how she repays me:rolleyes::D

Edited by jonc (see edit history)
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If you need to check anything by checking mine give me ashout

 

Cheers mate

 

Been busy all week in work so I have had to use the wifes car as my daily drive is hauled up. I did ring around some expert garages during the week but no one wanted to touch it down here (I rang 8 people including people on recommendations) so I will find out this weekend whats gone wrong and order the parts through mr T

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http://www.troublecodes.net/toyota/

 

This may or may not be beneficial.

 

None if the codes you have mentioned seem to appear on the list, but obd2 does have more numbers per code.

 

I hope you manage to correct the issue.

 

NB.

 

You may also find this helpful.

 

http://www.turbosupras.com/pdfs/JZA80%20TSRM/DI.pdf

 

From page 156 onwards details the gte engine, and the fault codes for obd2.

Edited by Pudsey
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http://www.troublecodes.net/toyota/

 

This may or may not be beneficial.

 

None if the codes you have mentioned seem to appear on the list, but obd2 does have more numbers per code.

 

I hope you manage to correct the issue.

 

NB.

 

You may also find this helpful.

 

http://www.turbosupras.com/pdfs/JZA80%20TSRM/DI.pdf

 

From page 156 onwards details the gte engine, and the fault codes for obd2.

 

Wow,

 

Thanks mate. Been busy today so will get on it tomorrow.

 

Hopefully will have an update after some investigation tomorrow.

 

Cheers

 

Jon

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I had time to nail the issues today.

 

Firstly had to get my torque pro working. I have not used it for ages and have changed phones since I last used it and for some reason it was a right pain to connect even with the correct advanced code ATIB 96 \n ATIIA 13 \n ATSH8213F0 \n ATSP4 \n 0100:rolleyes:.

 

Still after conducting the checks in the repair manual nothing was forth coming as all the voltage and Resistance readings were in spec so nice bunch of checks but didn't prove anything:

 

 

Throttle control motor

 

Resistance between CL- and CL+ Design 4.2- 5.2 ohms My reading was 4.5 ohms:D

Resistance between M+ and M- Design 0.3 - 100 ohms My reading was 2 ohms :D

 

TPS

 

Resistance between Vc and E2 Design 1.2 - 3.2 K Ohms My reading was 1.4 K ohms:D

 

Accelerator position sensor

 

resistance between Vc and E2 Design 1.2 - 3.2 K ohms My reading was 1.61 K ohms:D

 

 

 

Now all the above were taken with the car in the garage sat for the week so I took her for a run and she went into limp home mode with the MIL light on once warmed up. The readings above didnt change but once I got Torque pro working I had the following codes:

 

P0120- Powertrain- Throttle position sensor/switch A circuit

 

P1120- Accel pedal sensor circuit

 

P1121- Accel pedal position sensor range

 

P1349- VVTI system malfunction

 

I think that sums up where my issue is:D:rolleyes:

 

Now to look for the part number of a accelerator position sensor which I believe is 22060-46020. Not sure if the TPS needs changing as well from the line P0120 or is it just that the TPS could not read because the accelerator pedal position sensor is fubarred:D

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So it's as I thought, you should change them both.

 

Cheers chris. Yea you were right but with no one down this end willing to take a look it had to wait until I could ask the ECU what was wrong :D perks of living in gods country:innocent:

 

Is the TPS easy to set up as I have not read up on it but believe its a bit of a pig:blink:

 

Everyone thanks for your help so far;)

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  • 2 years later...
Hey. Did you ever get this resolved?

I'm having the same problem.

 

Cheers

 

Yes mate. Replaced the throttle body. It a fbw issue. Couldnt find any details in UK US or Japan on setting up TPS and APS together. There must be a way I just could find it so opted for a throttle body change.

 

I keot my old throttle body in case I happened across a set up procedure but to no avail yet.

 

Over here throttle bodys are £700 + so I go a low mileage second hand one from the US.

 

Its a known issue on vvtis and some owners have gone for the fbw delete option using Porsche tb but that needs a seperate ecu.

 

Someday someone cleverer than me will happen a setting up procedure of the tps and aps on a fbw system

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