Ignition Coil Resistance

Inspect coil for signs of arcing or leakage. Remove primary and secondary leads from ignition coil. Using ohmmeter, check primary resistance between (positive) and (negative) terminals of coil. See Fig 1 and Fig 2 .
Check secondary resistance between (positive) terminal and coil tower. See IGNITION COIL RESISTANCE . Replace coil if readings are not within specifications.

Fig 1: Checking Coil Resistance (Fuel Injection)

Courtesy of MAZDA MOTOR CORP.

Fig 2: Checking Coil Resistance (Carbureted)

Courtesy of MAZDA MOTOR CORP.

IGNITION COIL RESISTANCE

Application	Primary	Secondary
Festiva	.8-1.6	6000-30,000
Tracer	Continuity	6000-30,000