Hyundai Repair Questions? Ask a Mechanic for Answers ASAP
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I believe I can help on this concern, but I see you have been waiting a long time. I need to know first off do you still need help?
Thanks, ***** ***** the wire diagram for this circuit. https://dl.dropboxusercontent.com/u/90220402/24coil.pdf
At the coil is black wire a good ground?
At the ignition failure sensor, is the pink/black wire powered with the key on?
At the ignition failure sensor is the black wire ground?
At the ignition failure sensor is the tan/black wire powered while cranking?
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Can you do the test for power at the failure sensor again. The failure sensor powers the coil so we need to see what it is plugged up.
Unplug the failure sensor, jump a wire from tan/black to pink/black at that connector.
Is there now key on power to the coil?
Will it now start?
If so then replace the failure sensor.
Since there is now power to the coil from this test and still there is no spark verified occurring. That means its time to see if the computer is getting a CKP signal that is accurate when cranking. If so then check for a ground pulse signal from the computer to the coils.
A noid light like used to check fuel injector pulse can be used to check coil pulse.
Engine cranking speed is about 250 rpms, the reading would be similar to the CMP reading.
Hello again Chris here,
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Possible causes for a failure sensor to go bad are wiring issues effecting the power and ground to it and feedback from the coils effecting it. You will need to check all this with a new functioning failure sensor on the vehicle.
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