Test Dg: Step 3
3) Check Continuity of KS & SIG RTN Circuits Turn key off and wait 10 seconds. Disconnect ECA 60-pin connector. Inspect for and repair any damaged wiring. Install breakout box, leaving ECA and knock sensor disconnected. With DVOM on 200-ohm scale, measure resistance between SIG RTN circuit at KS harness connector and test pin No. 46. Measure resistance between KS circuit at the vehicle harness connector and test pin No. 23. If either reading is 5 ohms or more, service open circuit and repeat QUICK TEST. If both readings are less than 5 ohms, go to next step.