

| Subject: | Testing a Fuel Injection harness?? |
| From: | Tom Young |
| Date: | Thu, 5 Oct 2006 15:09:51 -0700 |
Hi all: I got a fuel injection harness to replace the one that was destroyed in an engine fire. (Air-cooled Federal Vanagon.) I figured I'd do some testing of the harness before going any further with it, but I'm stumped right at the get-go and I'm wondering if there's something here I don't understand. I first tested the wire that connects to the ignition coil; a continuity tester (test light and a battery) attached to the wire's spade connector at one end and terminal 1 of the big black ECU connector (as indicated in the wiring diagram) at the other end lit up. Cool! It's a good wire. I then went on to test the 4 fuel injection connectors and here's where I got stumped. Looking at the wiring diagram, one of the two wires at each fuel injector connector runs to a terminal in the ECU connector and the other wire runs to the white plug that attaches to the right side of the dual relay. In each case I registered continuity between one terminal of the connector and the appropriate terminal in the ECU connector. But, when I went to do the test with the other wire in each of the fuel injection connectors I got no indication of continuity at the white dual relay plug. The harness certainly *looks* OK and it's only an overabundance of caution that persuaded me to test it in the first place. According to my reading of the wiring diagram I should be showing continuity between the FI connectors and the white dual relay plug, but I'm not. Do I have a bad harness here, or am I missing something in my reading of the diagram? TIA. ---------------------------------------------------------------- Tom Young Lafayette, CA 94549 ----------------------------------------------------------------
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