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Home >> Mercedes Benz >> 1990 >> 300SEL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Testing With On-Off Ratio Tester >> Notes

Testing With On-Off Ratio Tester: Notes

NOTE: Perform On-Off Ratio Test and record results. Proceed to appropriate, TEST STEP as indicated in TROUBLE SHOOTING charts. See TEST STEP CHARTS in this article and perform indicated circuit tests to repair vehicle.