help! no bus on odometer , no crank, no start. - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 6 (permalink) Old 11-21-2019, 05:18 PM Thread Starter
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Sad help! no bus on odometer , no crank, no start.

car wouldnt start today.. it snowed last night, only an inch or so.

jiggling main engine harness wires sometimes nets me a crank and start..

IF it starts rpms stick at 1000 and wont change when revved.

IF it starts the car turns itself off after 5 seconds.

i also get no temp sensors, no OBD plug functionality.

i tried another PCM and that nets me in a starting running car, but no odometer, no speedometer, no RPM changes (stuck at 1000)
it will shift into drive and move with alternate PCM.

im suspecting water leaked into a connection but cant find any corrosion on any connector. transmission harness looks good. manually applying 12v to the starter trigger nets me a cranking starter.

could my BCM have an issue since im not getting OBD2?

i think im extremely competent with these cars but im lost, any ideas?
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post #2 of 6 (permalink) Old 11-21-2019, 05:58 PM
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How about posting what year car and whether there's any electrical modifications to what would be the stock wiring?
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post #3 of 6 (permalink) Old 11-21-2019, 06:05 PM
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The PCI Bus failure modes are broken down into
two categories. PCI Bus Communication Failure
and individual module no response. Causes of a PCI
Bus communication failure include a short to
ground or to voltage on any PCI Bus circuit. Individual
module no response can be caused by an open
circuit at the BCM or at the module, or an open
battery or ground circuit to the affected module.
Symptoms of a complete PCI Bus communications
failure would include but are not limited to:
All gauges on the MIC stay at zero
All Telltales on MIC illuminated
MIC backlighting at full intensity
No response received from any module on the PCI
Bus through the DRB
No start (if equipped with sentry key immobilizer
system)
Symptoms of individual module failure could include
any one or more of the above. The difference
would be that at least one or modules would respond
to the DRB.
Diagnosis starts with symptom identification. If a
complete PCI Bus failure is suspected, begin by
identifying which modules the vehicle is equipped
with and then attempt to get a response from the
modules with the DRB. If any modules (except
PCM) are responding, the failure is not related to
the total bus, but can be caused by one or more
modules PCI Bus circuit or power supply and
ground circuits. The DRB may display 9BUS +/-
SIGNAL OPEN9 or 9NO RESPONSE9 to indicate a
communication problem. These same messages will
be displayed if the vehicle is not equipped with that
particular module. The CCD error message is a
default message used by the DRB and in no way
indicates whether or not the PCI Bus is operational.
The message is only an indication that a module is
either not responding or the vehicle is not equipped
with that particular module.
NOTE: Communication over the bus is essential
to the proper operation of the vehicles on-board
diagnostic systems and the DRB. Problems with the
operation of the bus or DRB must be corrected
before proceeding with diagnostic testing. If there is
a problem, refer to the Communications category of
this manual.
3.14.1 BUS FAILURE MESSAGE
Odometer Displays (No Bus( - The Mechanical
Instrument Cluster (MIC) cannot communicate
over the bus and does not know why.

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post #4 of 6 (permalink) Old 11-22-2019, 12:13 AM Thread Starter
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Quote:
Originally Posted by Ronbo View Post
The PCI Bus failure modes are broken down into
two categories. PCI Bus Communication Failure
and individual module no response. Causes of a PCI
Bus communication failure include a short to
ground or to voltage on any PCI Bus circuit. Individual
module no response can be caused by an open
circuit at the BCM or at the module, or an open
battery or ground circuit to the affected module.
Symptoms of a complete PCI Bus communications
failure would include but are not limited to:
All gauges on the MIC stay at zero
All Telltales on MIC illuminated
MIC backlighting at full intensity
No response received from any module on the PCI
Bus through the DRB
No start (if equipped with sentry key immobilizer
system)
Symptoms of individual module failure could include
any one or more of the above. The difference
would be that at least one or modules would respond
to the DRB.
Diagnosis starts with symptom identification. If a
complete PCI Bus failure is suspected, begin by
identifying which modules the vehicle is equipped
with and then attempt to get a response from the
modules with the DRB. If any modules (except
PCM) are responding, the failure is not related to
the total bus, but can be caused by one or more
modules PCI Bus circuit or power supply and
ground circuits. The DRB may display 9BUS +/-
SIGNAL OPEN9 or 9NO RESPONSE9 to indicate a
communication problem. These same messages will
be displayed if the vehicle is not equipped with that
particular module. The CCD error message is a
default message used by the DRB and in no way
indicates whether or not the PCI Bus is operational.
The message is only an indication that a module is
either not responding or the vehicle is not equipped
with that particular module.
NOTE: Communication over the bus is essential
to the proper operation of the vehicles on-board
diagnostic systems and the DRB. Problems with the
operation of the bus or DRB must be corrected
before proceeding with diagnostic testing. If there is
a problem, refer to the Communications category of
this manual.
3.14.1 BUS FAILURE MESSAGE
Odometer Displays (No Bus( - The Mechanical
Instrument Cluster (MIC) cannot communicate
over the bus and does not know why.

electrically its a stock 2004 300m special...

I reseated the instrument cluster and it fired right back up!

that's some weird ass shit!

thanks ronbo!
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post #5 of 6 (permalink) Old 11-22-2019, 12:16 AM Thread Starter
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I must have poured over the service manual for hours! I think I read in the service manual, what you put into the forum here, but something wasn't clicking inside my head.
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post #6 of 6 (permalink) Old 11-22-2019, 01:38 AM
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Quote:
Originally Posted by zerokool View Post
I must have poured over the service manual for hours! I think I read in the service manual, what you put into the forum here, but something wasn't clicking inside my head.
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