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I am looking for the cell phone connector in a '02 ES300. The dealer installed my Nokia kit when I purchased the car (power, ignition, ground, radio mute wasn't connected). Nokia cable appears to go behind the NAV screen, can't really see if there was a connector up there due to the realys, and A/C unit. Do you think the wires were spliced in somewhere? I would think there would have been a connector in the console. I believe the car has a cellphone fuse. I also could find anything in a Lexus CD that had a complete 2001 schematic, but really no diagrams for 2002.
Have you looked for a cell phone connector under your center console? Neither the electrical diagram or the 2 volume repair manual set for my 00 LS mentions a connector under the console but I found a total of three connectors for the phone system under my console towards the back. One was a coax for phone antenna imprinted on the rear window, and the other two were probably for the different dealer installed phones that Lexus offered.
Unless some "phone nut" like me has messed with phone systems in the ES series and replies to your question, it might be easiest to just diassemble the console and see what you find. It is a fairly easy job (< 15 minutes) to get to the phone connectors on a 90-00 LS.
There are no spare connectors in this model under the console. My 1996 ES300 had two spare connectors. The dealer wired the original cable up somewhere behind the dash, leaving the speaker and the control module in that open space under the ashtray/cigarette lighter. If there was a connector that was used, it should have been in that area.
Your dealer may not have used any of the OEM phone connectors for your Nokia kit. The Nokia kit in my 00 LS takes its power (both "constant" and "ignition sense") directly from the ignition switch; the ground wire is attached to a bolt on the firewall. The President phone kit in my 90 LS, installed by a SW Bell installer, didn't use any of the OEM phone wiring either.
There were separate manuals for the Lexus phone kits -- not much information about the phone systems is in the repair manuals or the electrical manual exept that the electrical diagrams show the colors of some of the wires associated with the phone system.
I never looked in http://techinfo.lexus.com/ for the manuals on the phone systems but it might be worth a try.
You could pull your nav and trace the wires for your phone kit. It may sound difficult but I have pulled the audio/AC units in both my 90 and 00 LS and it was very easy - about a 10 minute job. It is even easier in our Camry which is probably more similar to an ES.
Here is a place where you can view electrical diagrams for 2002 ES300's -- various versions with and without the telephone system: http://www.bedlib.org/ebsco.html
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