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Engine wiring diagrams please?

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

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 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
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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.
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Sunday, December 6th, 2020 AT 5:18 AM
Tiny
BLESSING EWOBOR
  • MEMBER
  • 671 POSTS
Thank you very much it was a bad connection at the crankshaft sensor
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Sunday, December 6th, 2020 AT 4:41 PM

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