2011 Mazda 3 Aftermarket Keyless Entry Issues

Hi guys, not new to the site, but new as a member. So I'm trying to install a keyless entry system on my wife's 2011 Mazda3, power locks no factory keyless entry. I purchased this one off Amazon. -
https://www.amazon.com/gp/product/B07L4LTXSK/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 My issue is I can not get it to lock. It will unlock, but not lock no matter what wire I use. I wasn't able to find the wire under the dash so I just tapped into the wire off the switch and took off the door panel, so I would need to know where the wire is because it seems like it changes color at the connection between the door jamb seal. I did use the search and seen I need a 1000 ohm resistor (just ordered it) Excuse the ugly drawing lol, is this how its supposed to be wired ? The door trigger works off 1 wire, so I'll tie the unlock wire directly to that wire, then use the lock wire and attach the resistor to it then from the resistor attach it to the same wire? Also I'm trying to connect the parking lights and the horn. I'm a bit lost with the wiring for the parking lights, I can't find the right wire, For the horn I know I need a relay and don't know what kind or how to connect it. I was able to locate the horn wire, but If I connect the lock or unlock wire to it, its sounds like someone is just pressing the horn, not nice sounding at all. Can someone please help me out here. I got the drivers door off and a bunch of pieces off of the underdash. Wife wants her car back and working. Any input is greatly appreciated. Thanks in advance.



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Alexander The Great

Does the keyless entry module has an output for the horn? i could not see one in the diagram.

Parking Light:

Polarity: negative
location: Headlight switch, 12-pin white plug, pin# 1, wire color gray.
or
BCM 24-pin blue plug, wire color gray

remember to use a multimeter to test the parking light wire.

I am not familiar with your RKE unit. Can you post the install guide? I would like to see the outputs and their polarity. You diagram is nice but not too helpful in this respect.

Any way, your car has a one-wire door lock system. You have the correct wire if Unlock works OK. You just need the 1k ohm resistor to get the Lock function working. You might not need a relay for the horn. Depending on the Parking Light output you can go to either of two wires.

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Soldering is fun!

No output for the horn. Do you know what color wire is for the door lock? I traced the wire from the door lock switch and it doesn't come out under the dash. Looks like it changes colors at the harness on the door jam seal.

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Alexander The Great

Here is a wire listing for your car :

https://diagrams.marktoonen.nl/printlist.aspx?MakeID=29&ModelID=20184

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Soldering is fun!

MAZDA 3     2009-2013
KEY     T-HARNESS     IMMOBILIZER
N/A     N/A     MAZDA'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1
PART     COLOR     LOCATION     DIAGRAM
12 VOLT CONSTANT     ORANGE (+)     @ IGNITION SWITCH, (8-PIN PLUG), PIN H     
STARTER     LT. GREEN (+)     @ IGNITION SWITCH, (8-PIN PLUG), PIN B     
STARTER 2     N/A          
IGNITION 1     BLUE (+)     @ IGNITION SWITCH, (8-PIN PLUG), PIN A     
IGNITION 2     N/A          
IGNITION 3     N/A          
ACCESSORY/HEATER BLOWER 1     WHITE (+)     @ IGNITION SWITCH, (8-PIN PLUG), PIN D     
ACCESSORY/HEATER BLOWER 2     PINK (+)     @ IGNITION SWITCH, (8-PIN PLUG), PIN F     
KEYSENSE     N/A          
PARKING LIGHTS ( - )     GRAY (-)     @ HEADLIGHT SWITCH or BCM, (BLUE, 24-PIN PLUG(B), PIN V, NOTE #2     
PARKING LIGHTS ( + )     ORANGE (+)     in DRIVERS KICK PANEL, Harness to REAR of Vehicle     
POWER LOCK     LT. GREEN (TYPE B) (-) Negative through a 1000 ohm resistor     in DRIVERS KICK PANEL or BCM, (BLUE, 24-PIN PLUG(F), PIN D, NOTE #2     
POWER UNLOCK     Use LOCK wire, Straight ground to Unlock          
LOCK MOTOR WIRE     YELLOW (5-Wire Type)     in DRIVERS KICK PANEL or BCM, (BLUE, 16-PIN PLUG(E), PIN O, NOTE #2     
DOOR TRIGGER     BLUE (-) N.C.     @ BCM, (BLUE, 24-PIN PLUG(F), PIN G, NOTE #2     
DOMELIGHT SUPERVISION     GREEN (-)     in DRIVERS KICK PANEL or BCM, (BLUE, 16-PIN PLUG(E), PIN N, NOTE #2     
TRUNK RELEASE     BROWN (-) NOTE #3     in DRIVERS KICK PANEL or BCM, (BLUE, 24-PIN PLUG(F), PIN O, NOTE #2     
SLIDING POWER DOOR     N/A          
HORN     BLUE (-)     @ HORN SWITCH or BCM, (BLUE, 24-PIN PLUG(B), PIN U, NOTE #2     
TACH     BLACK/WHITE, BLACK/YELLOW, BLACK/BLUE or BLACK/ORANGE (AC)     @ Any FUEL-INJECTOR     
WAIT TO START LIGHT     N/A          
BRAKE     GREEN to PURPLE (+)     @ BRAKE PEDAL SWITCH or in DRIVERS KICK PANEL, Harness to REAR of Vehicle     
FACTORY ALARM DISARM     Disarms with Interface module          
ANTI-THEFT     MAZDA'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1          
NOTES
NOTE #1: This vehicle is with MAZDA'S TRANSPONDER ANTI-THEFT SYSTEM, for REMOTE STARTING ONLY you will need the Part #791 BYPASS Module and an Extra Ignition key. (Requires extra key for Operation)
OR USE
Part # PK-ALL for REMOTE STARTING ONLY, requires 2 keys for programming, NO key required for Operation.
OR USE
Part # DB-ALL for Remote Starting and Keyless Entry operation (no resistors required), 2 keys required for programming, no key required for Operation.

NOTE #2: the BCM, (Body Control Module) is located UNDER the DRIVERS DASH, above the DRIVERS KICK PANEL.

NOTE #3: TEST this wire while Opening the Trunk/Lift gate from the Release Button on the REAR of the Vehicle.


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~wirewise~ Verify all wiring with your meter before making any connections!

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Alexander The Great

alexandertg wrote:

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No output for the horn. Do you know what color wire is for the door lock? I traced the wire from the door lock switch and it doesn't come out under the dash. Looks like it changes colors at the harness on the door jam seal.

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Door lock:

Polarity: negative
Location: BCM 24-pin white plug, pin# 13, wire color green

I was able to find the the horn wire at the bcm. Can I hook up two relays, one from the parking lights then one to the horn so that it pulses at the same intervals. I would need help connecting them together as I have no idea how I would wire them.

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Alexander The Great

djdeito wrote:

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alexandertg wrote:

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No output for the horn. Do you know what color wire is for the door lock? I traced the wire from the door lock switch and it doesn't come out under the dash. Looks like it changes colors at the harness on the door jam seal.

---

Door lock:

Polarity: negative
Location: BCM 24-pin white plug, pin# 13, wire color green

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Thanks

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Alexander The Great

kreg357 wrote:

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I am not familiar with your RKE unit. Can you post the install guide? I would like to see the outputs and their polarity. You diagram is nice but not too helpful in this respect.

Any way, your car has a one-wire door lock system. You have the correct wire if Unlock works OK. You just need the 1k ohm resistor to get the Lock function working. You might not need a relay for the horn. Depending on the Parking Light output you can go to either of two wires.

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Thanks for verifying this. I wanted to connect two relays, one from the parking lights then one to the horn so that it's honking very briefly, say .03 seconds and not 2 second like it does if i connect directly to it.

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Alexander The Great

Yes, the locks diagram will work as long as the lock relays input ( Yellow and Yellow/Black ) is to Chassis Ground.

You must use the cars (+) Parking Light wire being as your RKE's system output is (+).
PARKING LIGHTS ( + )     ORANGE (+)     in DRIVERS KICK PANEL, Harness to REAR of Vehicle   

Using a relay to convert one of the Parking Light outputs to (-) to beep the horn might provide a longer beep than you want.

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Soldering is fun!

Thanks for pointing this out kreg357. As an alternate option, if the keyless entry module ( Yellow and Yellow/Black ) is NOT Chassis Ground, he could use two relays to convert the positive door lock/unlock outputs to negative door lock/unlock outputs.

I was able to hook up the keyless entry. PITA! Finding a power source and ground, no problem, finding the stupid door lock wire and parking light wire, royal pain. The parking lights wire is located way in the upper back behind the BCM tied to the firewall with a push in fastener, its a square harness. This "in DRIVERS KICK PANEL, Harness to REAR of Vehicle" is too vague. There too many harnesses "to REAR of Vehicle" with a orange wires. I removed the BCM and was able to solder the wire into place, very limited space. Now the unlock wire, I was unable to find it. "in DRIVERS KICK PANEL or BCM, (BLUE, 24-PIN PLUG(F), PIN D" was not the wire, I tried every green wire in that plug and no go. I ended up running a wire from the door unlock switch. Passed it right through the door jam boot seal and through a empty space on the harness. Everything is so crammed I could not see what wire the green with black line (Unlock Switch Wire) goes to because it changes colors in the harness. So thanks for everyone that helped. What I would like to do in the future is hook up the horn so that it briefly honks on lock. I left a wire under the dash so I can eventually connect it somehow. So again thanks everyone!

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Alexander The Great