Engine wiring diagrams please

Tiny
ALPHASENTORY GALAXY
  • MEMBER
  • 2000 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
No power to fuel pump; no power to fuel relay pins load and control side. Relay is good for fuel and efi injectors.
Friday, July 26th, 2019 AT 1:10 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
If 12 volts is going into the ECU and only 9 is coming out it sounds like the ECU is bad. To be sure here are the computer wiring diagrams and a guide to check the power and grounds if everything checks out replace the ECU:

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

Check out the diagrams (below). Please let us know what you find.
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Tuesday, August 6th, 2019 AT 10:10 AM

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