1982 Ski-Doo Shop Manual, Page 300Get this manual
SECTION 04 ELECTRICAL SUB-SECTION 07 (TESTING PROCEDURE)
CONTROL UNIT DIODE TEST (4-5P only)
AFTER THE START SWITCH HAS BEEN DEPRESSED
READING DOES NOT CHANGE
READING IS AT THE CORRECT VALUE
READING CHANGES, BUT IT IS LOWER THAN THE CORRECT VALUE