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my g/f has a 99 accord and i need to reset the multiplex system. Where is it at and how do i do it. any help would be appreciated. thanx

 
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There is no reset procedure for the multiplex unit because it doesn't need to be reset. What makes you think there is a problem with it the first place?

 
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i dont see why youd have to do this unless you swap the motor and/or ecu..

 
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well heres the thing. My g/f door locks all of the sudden stoped working. like with the keyless remote it only locks her driver door same with unlocking. so i did a little research and it said a whole bunch of prople had the same problem and the solution was to reset the multiplex system. I have no clue. What i do know is i am NOT absolutly NOT paying the 800 bucks that honda wants to fix it. i really need some help lol. thanx.

 
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Okay. Well, first of all, it requires troubleshooting and yes, Honda is the best to be doing that sort of thing. However... You can attempt to reset the multiplex unit by unplugging the negative battery cable, waiting a minute, then plugging it back it. I have never seen a multiplex unit screw up as you described without failing completely. If that doesn't fix the problem, you will have to do Mode 1 and Mode 2 diagnostics to see for sure if the multiplex unit is in fact defective. You will require a service manual to do these tests.

 
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I mean im not sure if that what is what it is thats what ive been told, if anyone has suggestions to what it might be (actuators???) spelled that wrong lol, or anything else that can be done?? thanx

 
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It is extremely unlikely that 3 actuators failed simultaneously. It is the keyless entry system in conjunction with the multiplex system which determins if the drivers door, or the other 3 unlock with a double press of the keyless remote or if all doors lock and unlock by the switch. Start with unplugging the negative battery cable for a minute and plugging it back in... this will probably do nothing as the multiplex unit self diagnoses and bypasses stuff when it's malfunctioning. Assuming you want to tackle it yourself, my best suggestion is to pick up a service manual and a digital multimeter. Then do a Mode 1 and a Mode 2 test on your multiplex unit. If it passes those, test the keyless entry system. You will require an electronics background to test the keyless entry system. It is expensive to get this professionally diagnosed because of the amount of background knowledge and experience to track down these problems.

 
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kool i appreciate the help. If that dosent work ill probley have to take it to honda as much as i dont want to. thanx again