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Home >> Mazda >> 1991 >> MX-5 Miata Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> Check VBAT Open To Coil (NAVAJO)
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Check VBAT Open To Coil (NAVAJO)

Turn key off, and disconnect harness at coil pack. Turn key on. Measure voltage between coil pack harness terminal No. 4 and ground. If more than 10.5 volts is present, go to next step. If there is less than 10.5 volts, repair open circuit. Remove all test equipment, and reconnect all components. Clear Continuous Memory and check for fault codes.