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Electric Load Detector

  1. Unplug 3-pin ELD connector (located on right fender apron near underhood fuse panel). Turn ignition on. Measure voltage between Black/Yellow wire (+) and Black wire (-) at ELD connector. If battery voltage exists, go to step 3). If battery voltage does not exist, go to next step.
  2. Measure voltage between Black/Yellow wire and chassis ground. If battery voltage exists, repair open in Black wire between ELD connector and ground connection behind right kick panel. If battery voltage does not exist, repair open in Black/Yellow wire between ELD connector and No. 4 fuse (Accord and Odyssey) or ECM fuse (Prelude) in underhood fuse panel.
  3. Measure voltage in Green/Red wire between ELD connector and ground. If voltage is about 5 volts, go to next step. If voltage is not as specified, check for open or short in Green/Red wire between ECM and ELD connector. Repair wire as necessary.
  4. Turn ignition off. Reconnect ELD connector. Connect test harness between ECM and connectors. See Figure . Start engine and allow it to idle. While measuring voltage between terminals A26 and D10 of ECM connector, turn headlights on low beam. If voltage does not drop when headlights are turned on, replace ELD. If voltage drops, replace ECM with known-good unit. If voltage drop symptom disappears, replace original ECM.
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