Ignition Control Module: Testing and Inspection

Igniter Testing:

NOTE: This test requires Mazda Special Service Tools (SST) or aftermarket equivalents.


Spark Test

1. Disconnect igniter connector.
2. Connect adapter (SST #49 H018 910) between igniter and wiring harness.
3. Attach 4-pin connector of igniter checker (SST #49 F018 002) to adapter harness.
4. Connect igniter checker power leads to battery.
5. Turn ignition switch "ON."
6. Disconnect high tension coil lead from distributor cap and hold 0.20 - 0.39 in (5 - 10 mm) from a ground.
7. Flip SW2 "ON" and "OFF" and verify that strong blue sparks are discharged from the high tension lead.

CAUTION: Do not hold SW2 "ON" for longer than one second or damage to the igniter may occur.




Voltage Test


1. Turn ignition switch "ON."
2. Connect a voltmeter to the black wire terminal of the adapter harnes.
3. Flip SW2 "ON" and "OFF" and verify that the voltmeter pointer fluctuates.

CAUTION: Do not hold SW2 "ON" for longer than one second or damage to the igniter may occur.