engine wiring diagrams please?

2004 TOYOTA COROLLA

254,754 MILES • 4 CYL • 2WD • AUTOMATIC

BLESSING EWOBOR

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753 POSTS
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Good morning, I have checked the fuse and relay, they are in good condition. The fuel pump and fuel injectors are functioning but there's no spark on any of the plugs. I tested the wires connected to the coil just to find out that there's no ground in any of the plugs. What could have caused it?

Oct 14, 2020 at 8:01 PM

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STRAILER

AUTOMOTIVE REPAIR CONTRIBUTOR
54,144 POSTS

Most of the time it will be the crankshaft sensor which is common. to be sure here are are two guides to help us see what's going on:

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

and

https://www.2carpros.com/articles/how-to-test-engine-compression

I have also included the crankshaft position sensor location so you can check it out. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Image (Click to enlarge)

Oct 15, 2020 at 10:27 AM

ASEMASTER6371

AUTOMOTIVE REPAIR CONTRIBUTOR
52,796 POSTS

Here are the engine wiring diagrams with a guide to help check the connections.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (Below). Please let us know what happens.

Images (Click to enlarge)

Dec 6, 2020 at 5:18 AM

BLESSING EWOBOR

MEMBER
753 POSTS

Thank you very much it was a bad connection at the crankshaft sensor

Dec 6, 2020 at 4:41 PM