2004 Honda Civic LX - Keyless Entry Install - Alarm System Install (Lock and Unlock with Remote)

2004 Honda Civic LX - Keyless Entry Install - Alarm System Install (Lock and Unlock with Remote)
Door Lock Wiring Diagram
www.dropbox.co...
Installed Viper alarm system but only connected functions for the unlock and unlock features. 4 wires total needed to use remote lock and unlock functions (Power, Ground, Lock signal and Unlock signal).
After completing installation found drivers door lock does not unlock/lock using the remote. Drivers door also does not lock/unlock using the door lock switch on drivers door panel.
Possible drivers door lock actuator defective.

[@thatonecarguy5201]

Door Lock Wiring Diagram - www.dropbox.com/scl/fi/kzqr90jksv24ucq53o1a3/2004-Honda-Civic-Door-Lock-Wiring.pdf?rlkey=irzd5ym782mvp75rzfe2akwcl&dl=0

[@Weihuanwu]

Nice install, i suggest you move that antenna up to where the rear view mirror is. its better for range and the blue light is meant to deter theives as a security light.

[@thatonecarguy5201]

Great points, thank you for the comment! Will definitely relocate the antenna/light.

[@truevibecheck6927]

So my Honda Civic LX 2004 connects the remote but it doesn’t unlock or lock, and while I was using it the alarm went off, does mine already have the keyless entry installed?

[@thatonecarguy5201]

I am not too familiar with alarm systems on these but found some info. These models had the keyless entry option that locks and unlocks the doors and also the better option for an Alarm system that will go off, if doors are opened or car is disturbed. The keyless entry option will only lock and unlock the doors. With the remote you can also trigger the panic alarm, but this is different than the better “Antitheft alarm” that is used when car has the complete alarm system. Interior will have the red flashing indicator light when system is armed. If car has no indicator light, car does not have the alarm system option. These cars also have the key immobilizer used with a chip in the key and a reader/ring near the ignition switch. Hope this is helpful.

[@thatonecarguy5201]

If remote works to activate panic alarm, remote/aerial connection to car should be good. Issue could be with door lock actuators or maybe a fuse/power supply problem to door lock actuators. If door locks work with inside door lock switch, problem can also be from the remote (panic alarm function works but locking and unlocking function does not). A second remote can help with diagnosis, if its available. Can see if spare key/remote operates in same way as normal remote being used.

[@gabrielmartins4752]

please provide the files

[@thatonecarguy5201]

The video has screenshots of the diagrams at 0:43, 1:20, and 1:40-1:55. You can also pause video and zoom in, if viewing on youtube App. What files did you need? For the alarm harness or the wiring for the car? Thank you for the comment.

[@gabrielmartins4752]

​@@thatonecarguy5201 Thank you for the response. I was expecting that you would have more files regarding this car. Mine is not locking, and I've been trying to understand why. The wire that sends the signal to lock the doors appears to be fine, as does the locker motor-it functions properly when I lock it with the key. However, the issue arises when I attempt to use the lock button or try to lock it with the alarm. Having the schematics of the multiplexer unit would greatly assist me in identifying the problem. In the end, I believe I will resort to using a microcontroller and creating a board specifically designed to lock the doors with the alarm. I'll craft this board compatible with the multiplexer unit. This way I'll not need to understand what is wrong, because find the schemes for this car is not easy.

[@thatonecarguy5201]

Very cool, hope all works out ok. I will try to find any related wiring diagrams and will share.

[@thatonecarguy5201]

Files added, Hope this is helpful.