Engine wiring diagrams please?

BLESSING EWOBOR

MEMBER
2004 TOYOTA COROLLA
4 CYL
2WD
AUTOMATIC
254,754 MILES

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?

Wednesday, October 14th, 2020 AT 8:01 PM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
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.

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Thursday, October 15th, 2020 AT 10:27 AM

ASEMASTER6371

MECHANIC
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 make bigger)