Checking the ignition coil (Mazda Familia BG)

The ignition coil is located in the engine compartment in front of the left shock absorber casing.

Checking the spark

1. The spark test can only be performed on vehicles without a catalytic converter, as the catalytic converter can be destroyed by fuel penetrating the exhaust system and igniting.

Caution! When starting, do not hold the ignition cable with your hand. Use well-insulated pliers for this or secure the cable in the desired position on the cylinder block using adhesive tape.

2. Disconnect the ignition cable from the ignition coil on the distributor.

3. Hold the ignition cable with well-insulated pliers at a distance of 5-10 mm from the ground. Use only well-conducting metal parts as ground, such as the cylinder block.

4. Ask an assistant to start the engine. Powerful blue sparks should flash. If no spark flashes, check the current supply to the coil.

Checking the power supply

1. Disconnect the plug from the ignition coil and with the ignition on, check the voltage at the positive terminal. The voltage should be 12 V. If there is no voltage, check the main fuse and cable harness.

Checking the primary winding

1. Measure the resistance between the terminals using an ohmmeter and compare it with the value in the table.

(Based on website data: MAZBOOK)

Checking the secondary winding

1. Measure the resistance between the positive terminal and the high voltage terminal using an ohmmeter, compare the obtained value with the value in the table.

Required values

Engine	Primary winding voltage		Secondary winding voltage
All engines produced before 9/89.	infinity		6 - 30 Ohm
Carburetor engine and injection engine (VZ) since 10/89.	1	0.77 - 0.95 Ohm	10 - 16 Ohm
	2	0.9 - 1.1 Ohm	10 - 16 Ohm
Injector engine (BP, B6) since 10/89.	0.81 - 0.99 Ohm

2. If the result of one or both tests does not meet the required value, the ignition coil should be replaced.