Hi, welcome to Just Answer
YOu might be better off posting in electronics catagory...auto mechanics do not fix them often remove and send elsewere. Here is diagnosis
An audio system is standard factory-installed
equipment on this model. Several combinations of
radio receivers and speaker systems are offered. The
audio system uses an ignition switched source of bat-tery
current so that the system will only operate
when the ignition switch is in the RUN or ACCES-SORY
The audio system includes the following compo-nents:
² Power amplifier (with premium speaker system
² Radio noise suppression components
² Radio receiver
² Remote radio switches (if equipped)
Certain functions and features of the audio system
rely upon resources shared with other electronic
modules in the vehicle over the Programmable Com-munication
Interface (PCI) bus network. The data
bus network allows the sharing of sensor informa-tion.
For diagnosis of these electronic modules or of
the data bus network, the use of a DRB IIIt scan tool
and the proper Diagnostic Procedures manual are
Refer to the appropriate wiring information for
complete standard and premium audio system circuit
diagrams. The wiring information includes proper
wire and connector repair procedures, further details
on wire harness routing and retention, as well as
pin-out and location views for the various wire har-ness
connectors, splices, and grounds.
The audio system components are designed to pro-vide
audio entertainment and information through
the reception, tuning and amplification of locally
broadcast radio signals in both the Amplitude Modu-lating
(AM) and Frequency Modulating (FM) com-mercial
The audio system components operate on battery
current received through a fuse in the Integrated
Power Module (IPM) on a fused ignition switch out-put
(run-acc) circuit so that the system will only
operate when the ignition switch is in the Run or
On vehicles that are equipped with the optional
remote radio switches, the Instrument Cluster
receives hard wired resistor multiplexed inputs from
the remote radio switches. The programming in the
Instrument Cluster allows it to process those inputs
and send the proper messages to the radio receiver
over the Programmable Communication Interface
(PCI) bus network to control the radio volume up or
down, station seek up or down, preset station
advance, and mode advance functions.
Refer to the owner's manual for more information
on the features, use and operation of each of the
available audio systems.
DIAGNOSIS AND TESTING - AUDIO
Any diagnosis of the Audio system should
begin with the use of the DRB IIIt diagnostic
tool. For information on the use of the DRB
IIIt, refer to the appropriate Diagnostic Service
Refer to the appropriate wiring information. The
wiring information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, SEAT BELT TENSIONER, SIDE
AIRBAG, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-LATE
THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-TEM
CAPACITOR TO DISCHARGE BEFORE PER-FORMING
FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-CAUTIONS
COULD RESULT IN ACCIDENTAL AIR-BAG
DEPLOYMENT AND POSSIBLE PERSONAL
(next is a chart copied here The capitol words are problems followed cause with number and solution with number it would not copy right)
AUDIO SYSTEM DIAGNOSIS TABLE /CONDITION POSSIBLE CAUSES/ CORRECTION (headings)
NO AUDIO 1. Fuse faulty. 1. Check radio fuse and Ignition-Off Draw (IOD)
fuse in the Integrated Power Module (IPM).
Replace fuses, if required.
2. Radio/amplifier (if
equipped) connector faulty.
2. Check for loose or corroded radio/amplifier
connector. Repair, if required.
3. Wiring faulty. 3. Check for shorted or open wires. Repair wiring,
4. Radio/amplifier (if
equipped) ground faulty.
4. Check for continuity between radio chassis and
a known good ground. There should be
continuity. Repair ground, if required.
5. Radio/amplifier (if
5. Refer to appropriate Diagnostic Service
6. Speakers faulty. 6. Replace speaker as necessary.
NO RADIO DISPLAY 1. Fuse faulty. 1. Check radio fuse and Ignition-Off Draw (IOD)
fuse in Integrated Power Module (IPM). Replace
fuses, if required.
2. Radio connector faulty. 2. Check for loose or corroded radio connector.
Repair, if required.
3. Wiring faulty. 3. Check for battery voltage at radio connector.
Repair wiring, if required.
4. Radio ground faulty. 4. Check for continuity between radio chassis and
5. Radio faulty. 5. Refer to appropriate Diagnostic Service
CONDITION/ POSSIBLE CAUSES/ CORRECTION
CLOCK WILL NOT KEEP
1. Fuse faulty. 1. Check Ignition-Off Draw (IOD) fuse in the
Integrated Power Module (IPM). Replace fuse, if
POOR RADIO RECEPTION 1. Antenna faulty. 1. (Refer to 8 - ELECTRICAL/AUDIO/ANTENNA
BODY & CABLE - DIAGNOSIS AND TESTING).
2. Radio ground faulty. 2. Check for continuity between radio chassis and
3. Radio noise suppression
3. Repair or replace ground strap as necessary.
4. Radio faulty. 4. Refer to appropriate Diagnostic Service
1. Faulty tape. 1. Insert known good tape and test operation.
2. Foreign objects behind
2. Remove foreign objects and test operation.
3. Dirty cassette tape head. 3. Clean head with Mopar Cassette Head
4. Faulty tape deck. 4. Exchange or replace radio, if required.
NO COMPACT DISC
1. Faulty CD. 1. Insert known good CD and test operation.
2. Foreign material on CD. 2. Clean CD and test operation.
3. Condensation on CD or
3. Allow temperature of vehicle interior to stabilize
and test operation.
4. Faulty CD player. 4. Refer to appropriate Diagnostic Service
The optional Infinity premium speaker system
a separate Infinity audio power amplifier.
The amplifier is a six channel unit and is rated at
total output watts. The amplifier is located
behind the glove box.
The power amplifier electronically increases the
frequency response of the normal audio signal output
from the radio amplifier in order to improve the
acoustic performance of the speakers. On vehicles
equipped with an amplifier, the amplifier section of
the radio becomes a pre-amplifier.
The amplifier receives audio signal inputs for
speaker channels from the radio, then sends ampli-includes
fied audio outputs through six separate channels
with dedicated feed and return circuits to the indi-240
(1) Disconnect and isolate the battery negative
(2) Remove glove box (Refer to 23 - BODY/IN-
STRUMENT PANEL/GLOVE BOX - REMOVAL).
(3) Remove instrument panel center bezel (Refer to
23 - BODY/INSTRUMENT PANEL/INSTRUMENT
PANEL CENTER BEZEL - REMOVAL).
(4) Remove instrument panel lower right center
bezel (Refer to 23 - BODY/INSTRUMENT PANEL/IP
LOWER RIGHT CENTER BEZEL - REMOVAL).
(5) Disconnect electrical harness connector from
amplifier (Fig. 1).
(6) Remove mounting bolts.
(1) Connect electrical harness connector and
(2) Install mounting bolts. Tighten to 10 N·m (90
(3) Install instrument panel lower right center
LOWER RIGHT CENTER BEZEL - INSTALLA-TION).
(4) Install instrument panel center bezel (Refer to
PANEL CENTER BEZEL - INSTALLATION).
(5) Install glove box (Refer to 23 - BODY/INSTRU-MENT
PANEL/GLOVE BOX - INSTALLATION).
(6) Connect battery negative cable.
right cowl side panel into the interior of the vehicle.
Inside the vehicle, the primary coaxial cable is con-nected
to a secondary instrument panel antenna
coaxial cable with an in-line connector that is located
behind the right kick panel. The secondary coaxial
cable is then routed behind the instrument panel to
the back of the radio.
Welcome to Just Answer,
Give me a day or 2 and I will come up with something, are you trying to plug the changer directly into the radio, dumb question, where are you accessing the network?
Give me all the part numbers you are using, the cables and changer any multi-plex device. Just to verify you said RB4 single CD Nav radio?
I apologize for your frustration, I will try to get you some valid info. I will be involved in Chrysler factory training all next week so I apologize if you do not hear from me, it can be hard to get on motel computers.
On a good note one of my classes is a higher level body electronics so if I can't get the answer myself I am sure the instructor will give it to me.
Thank you for your patience,
I am back,
Sorry for the wait.
Did you use any kind of multi-plexing box when you installed the CD player?
I think the problem lies in the network communication on your truck. Nowadays even the radio and CD changer our considered modules and they all communicate on a network. Your truck is most likely running a single wire PCI bus for interior communication. It would not surprise me if the changer was running on a CAN B bus.
This is hard for me to say because I can not look at the truck. I do however have a document pertaining to the installation of CD changers, NAV radios and satellite radios.
It says you need a multi-plexing box, this makes sense as this device would translate between the 2 different bus systems.
You may have already installed this device, you may have solved the problem by now, let me know one way or the other.
Refer the dealer to this info:
case # XXXXX
With factory UConnect there is 3 connectors in the module. There is a 10 way that sits away from the other connector. The 22 way and the other 10 way connector look like one connector but they are separate by a spacer (you need to look very close to see the spacer).
To install SDARS you will need to plug in Y-cable (05086643AA) from the Satellite Receiver to the Corporate Mux Box part number (05059112AC) to the ten way connector that is next to the 22 way connector on the Factory UConnect Module.
To add the CD Changer you will need cable (05080971AA for 10 Disk) or (05073243AA for 6 Disk) and that cable will plug into the Corporate Mux Box.
I would also check that you have the right cable, I spend a lot of time getting the wrong parts, even more likely if you are using parts from a donor truck. I am assuming that the RB4 works fine, what about the Navigation portion?
Please let me know how this turns out one way or the other.