hyundai no start

Asked by Jan 15, 2014 at 09:02 PM about the 2009 Hyundai Sonata

Question type: Maintenance & Repair

2009 Hyundai sonata 2.4 L , cranks but no start , no codes, no spark but has injector pulse and rpm reference on scanner cranking,  has power at coils but no ground signal from computer when cranking, cam sensor changes 5v to 1 v cranking slowly, fuses seem ok , tried 2nd known good key, have not tested crank sensor yet, manual shows mass air sensor but there is none it appears to be speed density instead ?any ideas?

1 Answer

22,425

ECM sends ground signal to coils the same as injectors. If you have no ground the ECM is bad.

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