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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test Dg - Knock Sensor (KS) >> Test Dg: Step 4
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Test Dg: Step 4

4) Check KS Circuit for Short to Ground  Turn key off and wait 10 seconds. With breakout box installed, ECA and knock sensor disconnected, set DVOM on 200-k/ohm scale. Measure resistance between test pin No. 23 and test pins No. 40, 46 and 60. If all readings are 10 k/ohms or more, remove breakout box, reconnect ECA and go to step 6). If any reading is less than 10 k/ohms, repair shorts in harness and repeat QUICK TEST.