| 摘要 |
A tester is adapted to plug in or otherwise connect to an ignition control module under test. The tester includes an LED in series with a resistor. The series circuit is connected between a battery and a contact in the connector which provides the control module with an electric load in substitution for the ignition coil primary associated with the vehicle engine. If, after the tester is connected to the ignition control module and to a battery, the LED is turned on bright, it is one indication of a failed switching transistor in the module. The tester is provided with a flexible lead terminating in a contact which is touched to a predetermined terminal of the ignition control module. If the LED flashes on and off in correspondence with the terminal being touched, it is an indication of the control module being capable of processing ignition timing signals and of the switching transistor in the module being good.
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