04 chevrolet malibu avital 4103lx 4 button PMUMUX

hello all.
Question 1) 2004 Chevrolet Malibu 4cyl. will avital 4103lx 4 button remote and xpresskit pkumux work for remote start door locks and trunk release?

Question 2) if yes. My wiring is listed below. I attempted to use the template but couldn't see how/where to upload the file in xls format. So I pasted it in CSV comma separated. If this is cut and pasted into excel it will format nicely. (or advise me how to use the template)

Currently the starter will crank, but engine won't start on remote. works fine still with the key wired as below.

secondary problems. when I hit remote for trunk release I don't hear the relays in the 4103 do anything, bad unit? don't know where to hook in the rear defrost either.

Thank you 12V wizards. .Great Forum.


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Vehicle Information:,,2004 chevrolet malibu classic 4cyl ,,,
Alarm / Remote Start Unit:,,Avital 4103lx,,,
Bypass Module:,,Xpresskit DEI/Avital pkumux install D,,,
,,,,,
Alarm / Remote Start / Bypass Unit,,,Vehicle,,
Connection,Color,Description,Color,Polarity,Location:
1,Red,4103heavy 6 Pin 1 +30a High 12v input,RED / black stripe,+12v,Ignition Harness
2,Pink/white ,4103Heavy 6 Pin 2 Output to second Ignition/acc ,Green ,,Iginition Harness
3,Red,4103Heavy 6 Pin 3 30A High 12v Input ,RED / black stripe,,Ignition Harness
4,Orange,4103Heavy 6 Pin 4 Output toAccessory,Brown ,,Ignition Harness
5,Purple,4103Heavy 6 Pin 5 Output to Starter,Yellow,,Ignition Harness
6,Pink ,4103Heavy 6 Pin 6 Output to Primary Ignition circuit,Pink,,Ignition Harness & PKUMUX pink
,,,,,
1,Blue ,4103Satellite 4pin connect pin 1 status output -,Blue/white,,PKUMUX pin 1 blue/white
2,Orange,4103Satellite 4pin connect pin 2 acc output -,,,
3,Purple,4103Satellite 4pin connect pin 3 starter output -,Violet,,PKUMUX pin 3 Violet
4,Pink ,4103Satellite 4pin connect pin 4 igniton output -,,,
,,,,,
1,BLACK/ white,4103Remotestart 5 Pin 1 neutral saftey switch,GROUND,,
2,violoet white,4103Remotestart 5 Pin 2 Tachomeeter,PURPLE / white ,,Iginiton coil/module on engine measures variable AC with eng speed
3,Brown ,4103Remotestart 5 Pin 3 Brake Shutdown ,Brown ,,@brakepedal light switch
4,Gray,4103Remotestart 5 Pin 4 hood switch,hood switch,,
5,Blue/white ,4103Remotestart 5 Pin -200ma 2nd status/ Rear defog,?????,,currently not using.. would like redefrost.
,,,,,
1,Light Green Black,4103 Main 9pin 1 -200ma Factor alarm disarm,,,
2,GREEN / WHITE,4103 Main 9pin 2 -200ma Factor alarm rearm,,,
3,Yellow ,4103 Main 9pin 3 + Ignition out to alarm,,,
4,WHITE/ blue ,4103 Main 9pin 4 – Activation Input,,,
5,Orange,4103 Main 9pin 5 – 500ma Ground when locked /anti grind,,,
6,Brown ,4103 Main 9pin 6 – 200ma Horn Output,Black,,Horn Steering column Black
7,RED / White,4103 Main 9pin 7 -200ma Trunk Relase ,BLACK/ white,,Knee bolster Trunk Release button
8,Black,4103 Main 9pin 8 GROUND,Chassis Ground,,Chassis Ground
9,White ,4103 Main 9pin 9 +/- Light Flash Output,Brown ,,Lights Steering Column
,,,,,
,,4103 3Pin Door Lock ,,,
1,Blue ,4103 3Pin Door Lock Pin 1 – Unlock,white,,Driver Kick +1500 Ohm resistor
2,Not Used,Not Used/Empty,,,
3,Green,4103 3Pin Door Lock Pin 3 – Lock ,white,,Driver Kick
,,,,,
,,12 pin harness Xpress kit PKUMUX BYPASS KIT,,,
,Blue/white,Input – To Ground when running Output (status) ,Blue,,4301LX 4 pin satilite harness pin 1
,Pink ,Ignition Input +,Pink,,Ignition Harness Pink (Heavy)/4103 Primary PINK heavy
,Violet,Starter Input +,Purple,,4301LX 4Pin Satilite 3 -200ma Starter Output
,Light Green,5v Reference ,Black,,key ignition assembly
,X,,,,
,X,,,,
,X,,,,
,X,,,,
,WHITE/ Black,,white,,Cut key ignition assembly To Key
,WHITE/ Red,,white,,Cut Key ignition assembly To BCM
,Red,12v batt,RED / black stripe,,Ignition Harness RED / black & 4103pin1 Red
,Black,Ground,Chassis Ground,,
,,,,,
,,,,,
,,,,,
,,,Yellow,,key ignition assembly small wire passlock whte / YELLOW/black

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The main problem is the use of the Avital (-) Starter output to trigger the PKUMUX.  It should be a (+) signal.
Here is the vehicle wire guide info I'm using :
https://www.readyremote.com/main.asp?make=Chevrolet&model=Malibu
https://www.bulldogsecurity.com/bdnew/vehiclewiringdiagrams.aspx

My answer won't be in the comma delineated format.

Alarm / Remote Start / Bypass Unit,,,Vehicle,,
Connection,Color,Description,Color,Polarity,Location:
1,Red,4103heavy 6 Pin 1 +30a High 12v input,RED / black stripe,+12v,Ignition Harness
2,Pink/white ,4103Heavy 6 Pin 2 Output to second Ignition/acc ,Green ,,Ignition Harness
3,Red,4103Heavy 6 Pin 3 30A High 12v Input ,RED / black stripe,,Ignition Harness
4,Orange,4103Heavy 6 Pin 4 Output to Accessory,Brown ,,Ignition Harness
5,Purple,4103Heavy 6 Pin 5 Output to Starter,Yellow,,Ignition Harness
6,Pink ,4103Heavy 6 Pin 6 Output to Primary Ignition circuit,Pink,,Ignition Harness & PKUMUX pink

1,Red,4103heavy 6 Pin 1 +30a High 12v input        to RED / black stripe   @ BCM C3, Pin 1
2,Pink/white ,4103Heavy 6 Pin 2 Output     Not Used
3,Red,4103Heavy 6 Pin 3 30A High 12v Input         to RED / black stripe   @ BCM C3, Pin 1
4,Orange,4103Heavy 6 Pin 4 Output           to Accessory, Brown  @ Ignition Harness  *1
5,Purple,4103Heavy 6 Pin 5 Output   to PKUMUX Violet
6,Pink ,4103Heavy 6 Pin 6 Output   to Primary Ignition circuit,Pink,,Ignition Harness & PKUMUX pink  *2
*1  Can also go to BCM, C4 RED PLUG, PIN C8,
*2  Vehicle Pink Ignition wire can also be found at BCM, C4 RED PLUG, PIN D3,

3,Purple,4103Satellite 4pin connect pin 3 starter output -,Violet,,PKUMUX pin 3 Violet
The PKUMUX is looking for a (+) Starter input ( using thick Purple wire shown above ).
3,Purple,4103Satellite 4pin connect pin 3 starter output - Not Used

7,RED / White,4103 Main 9pin 7 -200ma Trunk Release ,BLACK/ white,,Knee bolster Trunk Release button
Perhaps a typo, wire should be BROWN / White.  Try this wire info for the Trunk Release :
TRUNK RELEASE  BROWN / WHITE (-)  @ TRUNK RELEASE SWITCH or BCM, C1 GRAY PLUG, PIN 71

Additionally, unlike the Lock/Unlock buttons, the Trunk Release button must be pressed and held for 1.5 seconds to pop the trunk.

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Soldering is fun!

Thank you for the reply..
I punted... and picked up ADSL ALCA module for the bypass.
new quesiton.. Should I start a new thread?

can the 4103 use D2D with the ALCA?   I see a port labled D2D, but programming options on the ALCA list 2way 1way DBI or wired?

Thank you in advance.

It will work 2 way dbi.

Thank you.
the ADS ALCA says it needs to hit the door pin wire The install guide calls out grey/black (I read Grey with black stripe). It says it needs it to wake up the BCM and for RAP shutdown and somthing about the radio after start.

I can't find that in the drivers kick to save my life. I am looking in the harness that goes out to the door. only black striped wire I saw there, is a green with black stripe, it seems to be 12V constant. Is the door pin, what would be synonomous to the old dpression switch back in the day that turns on the dome light?? assuming its done magnetically or somthing these days. Any help in feeding this last connectoin would be much appreciated.

To work with the Avital 4103 in D2D mode, the ADS AL-CA will need to be flashed with the DBI box checked when you get to that page
during module programming.  Additionally, you will need the D2D harness shown with the red 4 pin connector on one end.

If I remember correctly, most all the wiring can be done at the BCM in the center console.  Look for the Gray/Black drivers door
trigger wire there.  Here is a link to ReadyRemote for their wire info on your car :
https://www.readyremote.com/main.asp?make=Chevrolet&model=Malibu
They have a photo of that wire at the BCM.

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Soldering is fun!

Thanks, going to try and do this wednesday.. again. But I think I will have it this time! Thanks.. wow that readyremotes is a great resource.

thank you!!! got the datalink-ALCA in and programed, remote start working.   left todo.
the heater blower is not coming on with remote start, I think I am on the wrong accessory wire, checking that this morning.

How/where do I tie into the rear defrost on this vehicle? @ switch

Still having an issue with the trunk release, is it possible I am on the wrong side of the release switch?

Just to review.
Avital 4103 4 button remotes ADS-ALCA bybpass D2D DSI hook up.

working off
readyremotes.com wiring for 2004 Malibu Classic 4cyl remote start.
https://www.readyremote.com/main.asp?make=Chevrolet&model=Malibu
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Everything working except rear defroster, I can't figure out where to tie into the Rear defroster on the car.

2004 cheverolet Malibu Classic
avital 4103 ads-alca bypass

Thank you all for the support.

Finally Job Complete. found Rear Defrost on the HVAC control cluster, middle connector of wires, White Wire.

Set the 4103 to Latch, comes on 10 seconds after start.

Good info, nice photo.  I checked a few sources and couldn't find it listed.

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Soldering is fun!