Ignition Coil With Built-in Power Switch Inspection

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the ignition coil connector.

Measure the resistance between each terminal on the ignition coil connector.

If the measurement corresponds to the table, replace the ignition coil.

IGNITION COIL SPECIFICATION

Item	Tester Connection Position		Condition
Item	Positive	Negative	Condition
Terminal	A	B	INFINITY or 0 ohm is abnormal
	B	C	INFINITY or 0 ohm is abnormal
	C	A	0 to several kilohm (continuity) is abnormal

Fig 1: Identifying Ignition Coil

Courtesy of MAZDA MOTORS CORP.