From: "Norbert Wank" Subject: [none] Mike/John/Jim: my 95 Max is not picking up power off idle, sounds very rough running, just like my old KZ when the ignition unit failed... I was looking at either connector going into the TCI unit, and cannot locate any white/green or white/red leads, as indicated in the schematic on page 7-23. Your e-mail mentioned "5-pin under seat", but there is no such connector, or no green lead. Looking into the connectors going into the TCI unit, I see the following: 6-connector O-X-B/R L/Y-B-B/Y and the (it appears to be ignition coil wires, another error of the manual on page 7-26): 8-connector O-Gy-R/B-X Y-W-B-X where: O = orange X = no connect B/R = black/red L/Y = blue/yellow B = black Gy = grey W = white Y = yellow B/R to B/Y of the 6-connector appears to be pressure sensor output, which works fine at about 2V. I have only identified one pick-up coil from B-O (6-connector) with 116 Ohms. Any other resistance to B is infinite. Resistance measuremnets on the 8-connector are all 4 Ohms, which is OK considering my wimpy probe wire resistance. The manual mentioned two pick-up coils, but the drawing shows four. Where do I measure those p/u coils? Thanks for any help. Bert - ---------- > * > Just me replying to my own e-mail, > > Yes, after redoing the tests below, w/black as common instead of > orange, the bike gave readings in spec. Total range was 112-117 ohms, > This means that, without a doubt, I can say that the TCI box is blown. > Everyone who owns a factory service manual, should make a correction > in the p/u coil test area & give Mike a round of applause for pointing out > what could give a Vmax mechanic a headache on any given day. > ( clap, clap, clap, clap... ) > > Thanks Bubba, > ( Do they still use " Bubba " by you ? When I was in your > neck of the woods,(NC) it meant friend, pal, partner ect... ) > > .oOo./\/\/\/\/\/\/\/\/\/\/\/\.oOo. > ___John M Cochrane___ > mrmax@starnetinc.com > VMOA #308, Palatine, IL USA > .oOo./\/\/\/\/\/\/\/\/\/\/\/\.oOo. > > John M Cochrane wrote: > > > What a Great Catch, > > > > I'll test them today and let you know how it turned out. Now, I can have > > confidence in which part is defective. ALLLLRIGHT !!! > > > > Thanks a ton Mike. > > > > Mike Sayers wrote: > > > > > On 14 Sep 97 at 23:09, John M Cochrane wrote: > > > > > > > ********* Well the test went as follows, O-B 116 ohms, O-GY 224 ohms, > > > > ********* O-WG 226 ohms, O-WR 229 ohms ( under seat 5 pin readings ) > > > > ********* My parts bike had very similar readings, it has low miles. > > > > > > Judging by these numbers, I think the book has Black and Orange mixed > > > up. Try it this way: B-O, B-Gy, B-W/G, B-W/R. Looks like your pickups > > > are good if I'm right. > > > > > > ...YES IT DOES have them wrong, look at the diagram on page 7-23, the > > > four colors coming from the pickup coils (#59) are Orange, Gray, > > > White/Red, White/Green. Black is common to all. Those idiots. > > > Everybody correct your manuals. > > > > > > This is major mistake #3 I've found in this book, the first two being > > > the Exhaust clearance shim table, and the testing the fan switch in > > > boiling water thing (you must use oil or coolant, water will not > > > get hot enough). > > > > > > Mike Sayers AMA #694085 DoD #2026 VMOA #234 > > > 1990 Yamaha Vmax Smithfield, NC (near Raleigh) > > > > ---------------------- > Mike/John/Jim: > my 95 Max is not picking up power off idle, sounds very rough running, just > like my old KZ when the ignition unit failed... > I was looking at either connector going into the TCI unit, and cannot > locate any white/green or white/red leads, as indicated in the schematic on > page 7-23. > Your e-mail mentioned "5-pin under seat", but there is no such connector, > or no green lead. 90 & up Vmaxes only have a 2-pin connector under the seat, mine is right by the rear left corner of the battery along the vertical frame tube. This is because there is only one ignition pickup coil. I forget what colors the wires are. The TCI unit is also different. Your manual should have a supplement with the newer info in it.