Test Aa: Step 9

9) Isolate Shorts In ECA  Turn key off and wait 10 seconds. With breakout box installed, connect ECA to breakout box. Disconnect EDIS module. Set DVOM on 200-k/ohm scale. Measure resistance between test pin No. 56 (PIP) and test pins No. 37 and 57 for short to power. Measure resistance between test pin No. 56 and test pins No. 40 and 60 for short to ground. If all readings are 90-150 k/ohms, problem is in EDIS system. See EDIS IGNITION SYSTEM in SYSTEM/COMPONENT TESTS article. If any reading is less than 90 k/ohms or greater than 150 k/ohms, replace ECA and repeat QUICK TEST.