Isolate EDIS Module/PIP Fault

With key off, disconnect ECA. Connect LED test light leads between breakout box pins No. J43 (PIP E) and J7 (ground). Crank engine. If LED test light blinks, replace ECA. If test light does not blink, check PIP for short to ground or power. Repair any problems found. If no problems are found, replace EDIS module.