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180° Interval Difference Method

DIAGNOSTIC METHOD CHART

Diagnostic value domg 180 = (omg 1 - omg 0) - (omg 5 - omg 1)/4
Judge as a misfire in the following cases.
  • domg 180 > judgment value of positive side
  • domg 180 ≤ judgment value of negative side

(Judgment value before 180° CA)
Fig 1: Crankshaft Position Speed Graph (180 Deg Interval Difference Method)
G07669718Courtesy of SUBARU OF AMERICA, INC.
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