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Re: How to test ECU ? Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: How to test ECU ?, saab9000turbo, Sat, 12 Jul 2003 16:30:02 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Stop throwing parts at the car and test it instead.
Get a regular test light and hook the lead to battery negative. Unplug one of the fuel injector connector and check for power at one of the two pins from engine wire harness while cranking the engine over.
Next, move the test light lead over to battery positive and check for pulsing ground signal at the other pin while cranking.
If you have power in the first test (lit up test light), the power supply to injectors are good.
If you don't have a blinking test light at the second test, you might have a bad computer (but only maybe). It might be other factors that makes the ECU not supplying ground signal to injectors.
Anders
posted by 66.229.132...
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