Dodge Charger Forum banner
1 - 12 of 12 Posts

· Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
Currently having an issue with my 09' charger electronics. I am hoping someone might have some insights or suggestions, as I can't seem to find any info on forums, websites, or by "dial-a-shop". About 2 weeks ago, my car became a brick with a red blinking light. Previous to this, all of the dash warning lights came on while driving, so I pulled over imediately and shut the car off. Stuck an OBD II on it and read a P0481 (fan 2 control circuit) and U0141 (lost communication with body control modual A) code. About 200 miles prior, I had the radiator and (1) radiator fan replaced due to fatigue failure...

I had something similar happen 5 years prior, and it was related to the battery. Checked voltage, was ok, but took it out anyway and had it tested, very low cranking amps, so i replaced it. I clearded the codes, checked alternator voltage, and started driving back home with my scanner still plugged in to monitor the system. About 1 min from my house, the dash warning lights light up again like a christmas tree and then my scanner read "lost communication with PCM" or something to that extent. The car was still running though, so I drove the remaining 1/4 mile and parked it in my garage. Now, it is a brick with a red blinking light. I can't for the life of me figure out how to reset or bypass what I am guessing is a security lockout? I can no longer connect to the computer to check codes see anything worth while. The interior lights come on, and the dash readout will still note "door adjar, or trunk open", but that is it. Key in, dead stick... i have pulled every fuse, pulled every relay one by one, checked new radiator fan wiring, un-cabled the battery for several days, but same condition persists no matter my efforts.

Has anyone ever seen this before, or have any suggestions other than "take it to the dealer"... ?

Any assistance or suggestions would be greatly appreciated.
 

· Registered
Joined
·
3,627 Posts
The only time I have had the security system lockout has been with a bad battery. I didn't know what the problem was at the time but had the car taken to the dealer and they diagnosed it as a bad battery (shorted cell). Car was running fine the day before. I parked it for the night and the next morning it was a brick (locked out).
.
 
  • Like
Reactions: dodgeguy

· Registered
Joined
·
2 Posts
Discussion Starter · #3 ·
*Update, I took the car to a shop that replaced the ignition module. Still no luck (they swapped it with 2 different modules to double check), no power to the system at all. Can't reprogram keys, can't communicate to PCM still.. anyone have any ideas? Any Dodge Techs that could provide any insight?
 

· Registered
Joined
·
4 Posts
*Update, I took the car to a shop that replaced the ignition module. Still no luck (they swapped it with 2 different modules to double check), no power to the system at all. Can't reprogram keys, can't communicate to PCM still.. anyone have any ideas? Any Dodge Techs that could provide any insight?
Did you ever figure this out ? I’m having a similar issue
 

· Registered
Joined
·
82 Posts
Sounds like one of two things: bad Body Control Module or a bad wire somewhere.
Could be bad PCM too.
Check voltage at the OBD II connector. You should have 12v to one of the pins. One is a ground also. Get a wiring diagram to verify locations. If you don't have voltage there, most likely it's the PCM. Pins #6 & #14 are for the CANBUS system which allows you scanner to connect. Checking voltage at each pin, you should get roughly 2.5v. You don't want it exactly 2.5v or the two are shorted somewhere. One should read 2.35v and the other 2.65v. Added together they will equal 5v.
There is a certain Ohm reading for each also between the two. I don't remember what it is or how to check it of the top of my head.
If you can't connect with the scanner, I'd say the PCM died. Common on Chryslers from what I hear. See if you can find a used one. Have the dealer or seller program the VIN into it and try that.
The red light is for security. Key fobs and key chips do die. But, you can still communicate with the PCM. Check all wiring to make sure a mouse squirrel didn't decide to make lunch pit of your wiring.
 

· Registered
Joined
·
11 Posts
Sounds like one of two things: bad Body Control Module or a bad wire somewhere.
Could be bad PCM too.
Check voltage at the OBD II connector. You should have 12v to one of the pins. One is a ground also. Get a wiring diagram to verify locations. If you don't have voltage there, most likely it's the PCM. Pins #6 & #14 are for the CANBUS system which allows you scanner to connect. Checking voltage at each pin, you should get roughly 2.5v. You don't want it exactly 2.5v or the two are shorted somewhere. One should read 2.35v and the other 2.65v. Added together they will equal 5v.
There is a certain Ohm reading for each also between the two. I don't remember what it is or how to check it of the top of my head.
If you can't connect with the scanner, I'd say the PCM died. Common on Chryslers from what I hear. See if you can find a used one. Have the dealer or seller program the VIN into it and try that.
The red light is for security. Key fobs and key chips do die. But, you can still communicate with the PCM. Check all wiring to make sure a mouse squirrel didn't decide to make lunch pit of your wiring.
I am having the same problem but not getting power to the OBD port so I ran a hot wire from cigarette lighter fuse to power it it got power but no codes popped up I have a 2009 Dodge Charger 5.7 police Package before the anti-theft light came on the key would read sometimes have to kinda play with it to get it to start then wouldn’t start so i went to the junkyard and got the win module/ ignition with key and didn’t work called a lock smith and he couldn’t get the win module to Connect with the pcm but I fond out my brother got the win module from same year but the motor was a 2.7 can that cose that not to connect
 

· Registered
Joined
·
3,627 Posts

· Registered
Joined
·
11 Posts
Check fuse #8 (15A) in the rear fuse box (trunk). It's the fuse for the Diagnostic Link Connector (OBD port), Wireless Control Module (WCM) and Wireless Ignition Node (WIN).
Fuse Box Diagram Dodge Charger (2006-2010)
.
Yea I bought all new fuses and relays except a few I just found a lil black box underneath the glovebox has relays in it do you know what it is bc the click when I try to start the car
Hand Finger Gadget Input device Nail
 

· Registered
Joined
·
3,627 Posts
The Omron 21911C relay is an accessory relay. It's not standard for civilian Chargers (as far I know). It was probably installed to go with the Charger Pursuit Outfitter equipment. Maybe some of the forum members with Pursuits will recognize it.
.
 

· Registered
Joined
·
4 Posts
I am actually dealing with this same problem. I have an 09 with the 2.7 in it. Someone shorted out my TIPM to the point it actually caught the module on fire. I replaced it with one from the junkyard. It only fixed part of the problem. So I replaced Fuses and relays and had my starter tested. Wasn't getting connected to the OBD port and found the PCM was apparently damaged as well. Got one from a local mechanics yard but he gave me one from an 06 Chrysler 300 which is not compatible. He refused to give me a refund. I was able to purchase a used one on eBay but couldn't afford to get it programmed before shipping thanks to his refusal to let me return the 300 module. It should arrive tomorrow or Saturday along with two new blank key fobs. I know I'm gonna have to get it reflashed somehow but was really hoping it will fix the problem. I was told it should start and run but only for so many drive cycles before it forces me to reflash it. I don't know if that's factual but I pray it is. I've been stranded here for 3 months now and just need to get the car back to where I was staying, about 18 miles away. Anyway, I will let you guys know how it pans out for me. Wish me luck and the same to you all.
 
1 - 12 of 12 Posts
Top