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Toyota Repair/no injector trigger

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Expert: Ted Ritter - 6/5/2009


Question
i have a 86 corolla sr5 and swapped it to a gts i have all the harness,cluster,engine,and so on ex the rear. my problem is i have no injector trigger i have battery voltage at the injectors. the injectors ohm out ok in spec. i check grounds and test tps i thought it might be the igniter or ecu but swapped them but i really don't know if they were good need help bad

Answer
I'm assuming that you also swapped the ECM, check the ground connections for the ECM, check all the brown/black wires at the ecm connectors to body ground, disconnect the connectors from the ecm and check each wire for continuity to body ground, the computer switches the injectors on/off by supplying a ground pulse signal to them.

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Ted Ritter

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I have more than 28 years experience as toyota technician, I will be able to answer most questions related to the Toyota product line up to the present year models,I am located in the US but welcome questions from other regions of the world. When asking a question please provide specific information: year,model, engine,transmission information. Provide as much information as possible including a brief repair history if possible. I have been a volunteer here for almost ten years an have answered over 16,000 questions helping Toyota owners with their problems without any compensation, some of my answers are published on many other websites via google and other search engines. AllExperts recently added a new feature which allows questioners to donate to experts on the site, any amount of donation is very much appreciated, to make a donation just click on the DONATE button.

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Toyota technician since 1979,expert in electrical systems,OBD systems,engine repair, driveability problems,EFI systems,ASE certified,Toyota master technician.
Certified Hybrid Vehicle technician.

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Toyota master technician, ASE certified in eight catagories, Hybrid vehicle certified. Toyota technical training: Engine Automatic transmission Manual transmission Drivetrain Electrical systems Brakes and chassis Air conditioning Engine performance and diagnostics Hybrid systems

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