A sequential port fuel-injected vehicle has been towed into the shop with a customer complaint of “Cranks but won’t start.” As the technician is verifying the symptom, he notices that he does hear the...

A sequential port fuel-injected vehicle has been towed into the shop with a customer complaint of “Cranks but won’t start.” As the technician is verifying the symptom, he notices that he does hear the fuel pump operate for two seconds when he first turns on the ignition switch. In other tests, he finds that although power is supplied to the fuel injectors with the ignition turned on, there is no PCM pulse to any of the fuel injectors. At this point, what faults could be responsible for the no-start condition? What test(s) would you recommend be performed next to narrow the list of possible faults?