2. Connect the negative probe of the device to contact 2 of the ignition distributor connector, and the positive probe to contact 4 of the connector (Fig. 9.2).
Fig. 9.2. Power Transistor Test (MPI)
Warning: This test must be performed within 10 seconds, otherwise the ignition coil winding may burn out and the power transistor may be damaged.
3. Connect the positive pole of the 1.5 V power source to pin 3 of the ignition distributor connector, and the negative pole of the power source to pin 4 of the connector, the device should show current flow, and when the power source is disconnected, the device should not show current flow (see Fig. 9.2)
4. If the test results do not give a positive result, replace the power transistor.
(The material was created based on the website www.MitsubishiMan.ru)