I have an A/T '97 mazda familia 323. The engine cranks but it doesn't start. The mechanic checked on it and said it has no spark. The electrician checked on the distributor but it was ok. Fuses are intact and there's no corrosion whatsoever. He's assuming that there's problem with the computer box na. Wala na bang ibang pwedeng culprit? Is it the computer box na agad that we need to pull out? Diagnosis is P1,500 na and repair (kung kaya pa) is P5,500. Surplus is 20K .

Just wanna ask if it's a smart move to have my computer box checked already or there are still other steps I could do to make it start.