ECT sensor wiring diagram

MONCHO6685

MEMBER
1997 HYUNDAI ELANTRA
1.8L
4 CYL
2WD
AUTOMATIC
137,854 MILES

The owner of this car make a jumper from the positive of battery to the green wire of the ECT and damage something. I want to have the wiring diagram to make a search for the trouble he made.
To diagnose what possible is the damage and know how to repair.
I always thankful for your great help.
Att. Juan Marin

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,645 POSTS

Welcome to 2CarPros.

I attached a few portions of the schematic related to the ECT sensor. Now, the green wire goes to the intake air temperature sensor (IAT). However, it is spliced into the ECT. Also, the same wire also connects the TPS and the acceleration sensor. I'm not sure what is happening, but I hope this helps. Take a look at the pics I added and let me know if they help or if you need something different.

Take care,
Joe

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Saturday, August 17th, 2019 AT 8:54 PM

MONCHO6685

MEMBER
118 POSTS

Hello jacobandnickolas,

The owner of the car saw a video on YouTube to see how he make a repair for the motor and A/C fans.
He made a bridge from the positive of the battery to the green wire of the ECT sensor. He heard a little "explosion" somewhere on the engine. When he try to start the engine, the engine won't start. Then he put an scanner on the obdii diagnosis plug. The car start, but very roughly, very roughly.
There's something blown on the circuit, I think, but I don't have the wiring diagram to see what's on that circuit. Something is blown, (i think). But I need the diagram to see what's on that circuit and know what's going on with that problem.
If you have suggestions, they're very welcome, as always.
Thanks jJacobandnickolas.
Att. Juan Marin

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Sunday, August 18th, 2019 AT 6:08 AM

JACOBANDNICKOLAS

MECHANIC
109,645 POSTS

Welcome back:

Are the diagrams I attached helpful? Is there more that you need?

What codes is he getting with the scanner? Also, the green wire, although spliced into the ECT, is primary for the air intake temperature sensor. Also tied in is the acceleration sensor.

Let me know if I can get anything more for you.

Take care,
Joe

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Sunday, August 18th, 2019 AT 6:54 PM