Vehicle: 2007 Chrysler 300c
Alarm System: Scytek_Astra 4000RS w/remote start
Transponder: Omega_DB-CHDL7P2
Things that work
The car starts and runs properly using the factory keys.
The car starts and runs properly using the Remote starter remote.
The transponder sends the car alarm a negative pulse when I open the doors….meaning the DB-CHDL7P2 is reading the car’s data line and telling the alarm the doors are open.
Here is the problem I am having.
The alarm remote do not lock unlock doors / open trunk /or deactivate the factory alarm. Reason: the transponder is not taking the signals from the car alarm and communicating it to the car’s data line.
Troubleshooting……
If I activate the lock or unlock buttons on the alarm remote I can see the negative pulse going to the transponder’s lock pins 2 or unlock pin 3. If I select the trunk open button on the remote I can see the negative pulse going to the transponder pin 8.
I also ran a ground wire for 1 second across each pins (2, 3, and 8) to see if the transponder would lock, unlock door or open trunk. Nothing happened.
The transponder is connected up correctly because the remote starter works. I used the MUX system provided by the transponder to apply the correct resistor values. Plus pin 4 of the transponder sends the car alarm a negative pulse when I open the doors.
I tried to reset the Doorlock Interface by pressing the program buttons until I got Mode8 option2 “Complete reset of option and mode” . Still same problem.
Have anyone seen this problem before. What should I do next.
My wiring connections are below
Transponder wires connections:
2-pin
1 to Coil
2 to Coil
2-pin
1 Red IN to Car’s Ignition switch (PK/WT)
2 no connection
10-pin
1 Brown IN to Alarm’s “Gnd when running” Blue/Orange
2 Green IN to Alarm’s Door Lock “lock out (-)” Green
3 Blue IN to Alarm’s Door Lock “unlock out (-)” Blue
4 Violet/White OUT to Alarm’s “Negative door input” Green
5 Violet DATA Car’s SKIM pins 6 “DATA” WHITE/ orange
6 Pink/White OUT to Car’s Ignition switch “2nd Starter/Ign” Violet/Brown
7 Pink IN to Car’s Ign SW “starter” pink/dk green and Alarm’s “Starter Out” Violet
8 Orange IN to Alarm’s “Trunk Release Out (-) Gray
9 Red IN to Car battery +12v
10 Black IN to Car chassis
Note a 1k ohm resistor is also connected between Pin 7 Pink the Pin 10 Black
All my connections are soldered.
Am I in trouble. I hope someone is able to help me. I think the module is bad.
I just do not understand why the module can talk to the alarm but can not talk back to the car.
Talk to alarm meaning: Data module telling alarm the doors are open
Talk to car meaning: Data module telling car to lock, unlock doors, open trunk, disable factory alarm
Don't panic, it happened to me once in a 2004 caravan. I had to put two relays to strengthen the triggers. Try o ground the blue wire of the module and see if thst unlocks the doors. otherwise, call the tech support and talk to Fredi, he is the one who will help you out.
Good luck.