HELP! Where is Intake Air Temperature Sensor on a 1994 FJ 80 Land Cruiser (1 Viewer)

[Vavrinyuk]

I keep getting a check engine light CODE 24 (Intake Air Temperature Sensor) after my car warms up to normal driving temp and driving a few miles. Can someone please help where I can find it to fix the issue. When light turns on the idle only goes up a little bit but other then that engine runs normal.

Please help I have check every cable and sensor and all seem to be in good working condition.

Thank you all!

 

[bloc]

Built into the air flow meter

 

[Maleficio]

Pull your connector at the AFM and spray contact cleaner on both ends, or brake cleaner, reinstall, see what happens.

AFM connector is on the air filter assembly. I have a 94, too.

Reset your ECU before you fire back up. Disconnect one battery terminal for ten minutes, reconnect, or pull your EFI fuse for ten minutes.

 

[Maleficio]

If you don't feel like waiting ten minutes, connect one battery terminal to the other for twenty seconds to dump the data, reconnect, see what happens.

 

[Mudder]

If you don't feel like waiting ten minutes, connect one battery terminal to the other for twenty seconds to dump the data, reconnect, see what happens.

Ummmm what?

 

[Maleficio]

Ummmm what?

It's the quickest way to clear the codes. Disconnect one terminal, use a jumper to connect the two terminals for twenty seconds. Reconnect the terminal. Grounding the ECU dumps the data. Fighter jets utilize a switch to do this.

 

[Maleficio]

Actually, disconnect the positive terminal, jump it to the negative.

 

[ZackR]

Easiest way to clear codes on a 94 is to pull the EFI fuse, wait a minute and put it back in. Less hassle than pulling the battery cable off.

 

[Maleficio]

Easiest way to clear codes on a 94 is to pull the EFI fuse, wait a minute and put it back in. Less hassle than pulling the battery cable off.

True.

 

[Vavrinyuk]

Thank You all for the reply

I have pulled the ECU fuse and disconnected battery terminals to reset codes and it still lights up after it drives around. I will try cleaning the AFM and see if that helps.

I forgot to ask is there a temperature sensor on the Throttle Position Sensor or Idle Control Sensor I recently replaced both and want to make sure they are not causing the issue either.

 

[Vavrinyuk]

I meant EFI Fuse

 

[Maleficio]

Focus on your AFM. "Barn Door" as we called it in the Porsche 928 world. This is where your temp sensor is located. Clean your contacts now.

 

[SmokingRocks]

There are troubleshooting procedures specifically for the AFM in the factory service manual. You need a multi meter

 

[bloc]

Fighter jets utilize a switch to do this.

Landcruisers aren't fighter jets


You are aware there is an "edit" function to add things you forgot to posts, right?

 

[Maleficio]

Going out on a limb here. Is it possible to clean the temp sensor, say with MAF cleaner? That's what I would do after cleaning the contacts.

 

[Maleficio]

Landcruisers aren't fighter jets


You are aware there is an "edit" function to add things you forgot to posts, right?

The switch provides a ground to dump the data, which is the same as jumping the disconnected positive battery terminal to the ground terminal.

 

[SmokingRocks]

I wouldn't waste your time with the AFM. Clean the contacts then test per the FSM, if its out of spec replace it. the AFM's are "dumb" compared to a MAF.

 

[Maleficio]

For all you boys who keep saying the LC is not a fighter jet, do you know where automotive technology comes from?

 

[SmokingRocks]

in this case the technology comes from farm implements

These aren't Saab's

 

[Maleficio]

in this case the technology comes from farm implements

These aren't Saab's

The L6 may be an industrial engine, but it's controls came directly from Aviation.

Aviation leads the way.