![]() ![]() Step 3: Generate your Honda Odyssey Radio Code To discover your complete 8-digit code, simply disregard the letters and combine the two sets of numbers.įor example, combining U2051 and L5641 produce 20515641 as the serial number. U2051) while another screen displays an L followed by the last 4 digits of your serial number (e.g. One screen will display a U followed by the first 4 digits of your serial number (e.g. The display should toggle between multiple screens. While pressing 1 and 6, turn the radio on.ĥ. If not, disconnect the battery for a moment before re-connecting and then try again.Ĥ. Step 2: Where to find your Honda Odyssey Radio Serial NumberĢ. If you own a model Odyssey, your VIN can be located on the driver's side door jamb, or in the glove box. I'm not familiar with that process or how much that costs.Step 1: Where to find your Honda Odyssey VIN Otherwise you'll need to get the code from the dealer. I'm sure there are used ones out there but that code is important. If all that is good, replace the Nav Unit.Įach Nav Unit has it's own anti-theft code so you need that code to make it work when you install it. You just want to check the wiring first which means checking each of the power wires and each of the ground wires, and you'd want to make sure that the signal wires from the Nav Unit to the Display Unit are not broken. From your descriptions it's pretty apparent it's the Nav Unit. The scope would be necessary to look at the outputs to the display unit. If those are good then usually the module, in this case the Nav Unit, is the problem. Generally, if a module is not working, you check all the power wires and all the ground wires to make sure those are good. Checking powers and grounds just means you check all the power and ground wires going to the nav unit. If you can see the backlight then the service manual says to replace the Nav Unit under the seat.Ĭhecking powers and grounds doesn't require a scope. I'm guessing you'll have backlighting since it works when folded down for the cupholder message. If nothing is displayed then shade the display from the sun and see if the backlight comes on. If that displays then go into the Nav System Link Diagnosis section and check all the links. Normally, you'd see the diagnosis screen displayed. ![]() Use a jumper wire across that connector and then turn on the key. There is a way, however, to force start the display and then you can have the display check it's inputs (if the Nav Unit will light it up.) On the back of the Nav unit itself is a 2-pin connector that is not connected to anything. If powers and grounds check out OK it most likely needs a new Nav unit. If nothing there then I'd probably check powers and grounds with a scope or meter. If I were working on this car I'd probably scope the wires going to/from the nav unit and the nav display to see if the Nav unit is outputting anything. That would explain why you get the cup holder message displayed but nothing from the reverse camera or the Nav unit. The Audio CD changer outputs directly to the Nav display and doesn't go through the Nav Unit. That unit takes all the inputs from gauge cluster, climate control, reverse signal, vehicle speed sensor, PCM, and voice control and then outputs to the Nav display. The Navigation Unit is the box (DVD player) that contains the Nav DVD. I don't recall for sure where it is on the 05-06 but I think it's in the same place. In looking at the diagrams and reading the system operation description, it appears your issue is going to be the Navigation unit (or possibly the wiring in between.) On the 07 and up it's the DVD player under the driver's seat. We plan on checking the fuses when it is daylight tomorrow but not quite sure which ones to check. I tried to push the talk button to get the system to turn on but it is silent with no beeps. I reinserted it and it is still black screened. I checked the Nav dvd drive under the seat and took out the maps dvd and it is authentic with no scratches or fingerprints. The door opens when accessing the CD and the screen displays the warning message not to use it as a cup holder. Sooo, now that we know we SHOULD have a nav system.we'd like to try and troubleshoot it. We decided to purchase the vehicle anyway because we weren't aware there was a navigation system in the first place (and the price was great)! He tried to troubleshoot it but could not get it to come back on. The car salesman told us when we got there that the Nav/backup screen went blank a few days ago but was working perfectly before that. I've searched a few threads but hoping for some fresh answers. ![]()
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