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Engine control module

Tiny
JAMES C ADCOCK
  • MEMBER
  • 1994 TOYOTA LANDCRUISER
  • 4.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
Engine has no spark and no check engine light. I sent engine control module to place in Florida and they sent it back after claiming to have made repairs but seems like they did nothing but put stickers on it that voids warranty if removed.
I was led to believe it would be plug in and go by salesperson at company.
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Tuesday, May 8th, 2018 AT 9:43 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

Yes it should be but if the computer has no power or ground it will never work. I would check the circuit open and EFI relay.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

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

Here is the location of the relay and the engine wiring diagrams to help you run down the power and ground. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken
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Wednesday, May 9th, 2018 AT 2:12 PM
Tiny
JAMES C ADCOCK
  • MEMBER
  • 2 POSTS
Very cool this is the most and best tips I have been given. I will do what I can to promote this site.
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Saturday, May 12th, 2018 AT 9:09 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Sunday, May 13th, 2018 AT 10:54 AM

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