Engine wiring diagrams

MAFAROOQI

MEMBER
2009 TOYOTA COROLLA
4 CYL
2WD
AUTOMATIC
45,000 MILES

Hi. I have the car listed above XLE model. The problem I have is it is not starting. It cranks and start for one or two seconds and then turns off. I also check it with the scanner there’s no code, but the vehicle ECM was not communicating with the scanner. I send the ECM for the repair but they said the ECM is fine. They said there should be something else with the car that’s why the vehicle is not communicating with the ECM. Please help, I can’t figure out the problem.

2 Replies

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hi Mafarooqi, my name is Alex and I will be helping you today. It sounds like you might have a problem with your anti-theft system. I have copied down a description of it and how it works for you. I will also send along a couple of instructional links for you. Hope this helps.

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/how-to-reset-a-security-system

Check out the diagrams (below). Please let us know what you find.

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Wednesday, August 12th, 2020 AT 10:51 AM

KEN L

MASTER CERTIFIED MECHANIC
43,072 POSTS

Hello,

This communication error can be caused by one of the modules is not working this video will show you which one:

https://youtu.be/InIlnsjOVFA

There are three relays and five fuses I would check as well. here is the engine wiring diagrams so you can see how the system works with the fuses and relays that need to be checked as well with guides to how you how and the locations of the fuses and relays:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

There is an OBD fuse I would check as well.

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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