Alternator not charging

2007 TOYOTA RAV4

110,000 MILES • 2.0L • 4 CYL • 4WD • AUTOMATIC

MUSTANGKEVIN

MEMBER
3 POSTS

Anyone know how to check voltage signal from ECM or how to check ECM? We have good alternator it was bench tested and we have 12 volts at alternator also.

Jan 17, 2020 at 12:50 PM

SCGRANTURISMO

✓ASE Certified Mechanic
4,897 POSTS

Hello,

I would start by checking the ALT fuse[120/140A] in the Engine Room R/B 1 on the left hand side of the engine compartment. In the diagrams down below I have included the Charging circuit wiring diagram and the diagram of the Engine Room R/B 1 with call out for you in the diagrams down below. Here is a link explaining how to check a fuse, if needed, below as well:

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

Please go through these guides and get back to us with what you find out. We can go from there, if needed.

Thanks,
Alex
2CarPros

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Jan 17, 2020 at 4:30 PM