1989 Ski-Doo Repair Manual, Page 406Get this manual
Section 04 ELECTRICAL Sub-section 06 (TESTING PROCEDURE)
Ignition module test
a) To perform this test, switch can be at LO or HI positionb) Set the selector to CONTROL UNIT positionc) Depress START switch for seconds minimum and read LED level indicatorReading should be from to 5
Ignition module diode test
a) Set the selector to CONTROL UNIT DIODE positionThen, four or five LEOs will lightIf four or five LEOs do not light, check the power source and that the selector and switches are positioned correctlyb) Depress the START switch and read LED level indicatorReading should be from to 8