who is good with reading electrical schematics?
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Hall Of Fame
Joined: Mar 2009
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From: South GA
who is good with reading electrical schematics?
I need some help with some schematics.
Look at this schematic and see the first wire on the left coming out of the PCM? It is the PNP SW SENSE wire on pin #21 coming out of the C3 harness and is yellow and dark blue. But what is this "T41" right behind all of that?
Im comparing schematics between 04/05 PCM/TCM
http://www.4shared.com/document/a_RH...s_circuit.html
Look at this schematic and see the first wire on the left coming out of the PCM? It is the PNP SW SENSE wire on pin #21 coming out of the C3 harness and is yellow and dark blue. But what is this "T41" right behind all of that?
Im comparing schematics between 04/05 PCM/TCM
http://www.4shared.com/document/a_RH...s_circuit.html
Captain
Joined: Apr 2010
Posts: 724
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From: MINNESOTA
t41 is the circuit
2004 ram with the hemi's on C3 pin 21 have the
T41 20YL/DB TRS T41 SENSE
but the 2005 has
G113 18VT (EXCEPT 3.7L BASE) PTO SWITCH SENSE
in pin #21
2004 ram with the hemi's on C3 pin 21 have the
T41 20YL/DB TRS T41 SENSE
but the 2005 has
G113 18VT (EXCEPT 3.7L BASE) PTO SWITCH SENSE
in pin #21
Last edited by brettj2408; Aug 9, 2010 at 08:36 PM.
Hi weedahoe
pn c3 pin 21 is the t41 sense curcuit,thats from the PCM to cav 4 of the TRS connector.2004 color is yellow/light blue. 2005 same curuit is yellow/dark blue. These are off dealer connect. If you would like the diagrams,i will send them to your email address.
pn c3 pin 21 is the t41 sense curcuit,thats from the PCM to cav 4 of the TRS connector.2004 color is yellow/light blue. 2005 same curuit is yellow/dark blue. These are off dealer connect. If you would like the diagrams,i will send them to your email address.
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Hall Of Fame
Joined: Mar 2009
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From: South GA
Ive got AllData and Mitchell OnDemand so im good for schematics....LOL
I understand how to read them for the most part and my question was not pertaining to just this ONE circuit but rather the same thing on every circuit out there.
maybe this will help anyone else wanting to know
http://www.4shared.com/account/docum..._Diagrams.html
I understand how to read them for the most part and my question was not pertaining to just this ONE circuit but rather the same thing on every circuit out there.
maybe this will help anyone else wanting to know
http://www.4shared.com/account/docum..._Diagrams.html
Last edited by weedahoe; Aug 10, 2010 at 08:58 AM. Reason: fixed link
Captain
Joined: Apr 2010
Posts: 724
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From: MINNESOTA
the picture/link sint working..
and weed, i have dealerconnect so if you got any questions feel free to ask as well
and weed, i have dealerconnect so if you got any questions feel free to ask as well
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Hall Of Fame
Joined: Mar 2009
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From: South GA
THX guys. IDK if I mentioned it but I have an 04 and am custom tuned through Diablo. But with an 04 they only support PCM and not TCM. But they do TCM support on 05+ so i want to swap out my 04 PCM/TCM for an 05 but am trying to see if I need the harnesses that go with it.
No one can seem to answer what the differences are from 04 to 05 so i have no travel this road alone.
If an 05 eng/trans can work in an 04 truck then obviously the mechanics are the same. it must be purely software/sensor data driven by the PCM/TCM.
No one can seem to answer what the differences are from 04 to 05 so i have no travel this road alone.
If an 05 eng/trans can work in an 04 truck then obviously the mechanics are the same. it must be purely software/sensor data driven by the PCM/TCM.
Captain
Joined: Apr 2010
Posts: 724
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From: MINNESOTA
if you need different harnesses, that means there are different connectors on the accesories or modules around your truck.
otherwise if it wasnt you could just swap terminals on different connectors to make it work, but that wont work
otherwise if it wasnt you could just swap terminals on different connectors to make it work, but that wont work
Veteran
Joined: Dec 2009
Posts: 432
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From: Gardner, KS
Weed,
From what I can see (and my experience) these are most likely wire tags. This is simply a way to assign a unique # to each wire (in this case for the PCM) that allows people to quickly id a wire without reading through the pin out and or wire color/location.
for example one could say "see wire T41" vs "see the dark blue/yellow wire on pin 21 of the C3 harness" it is simply another wire identifier that is unique to that circuit.
in my experience they do this to make it quicker/easier on the end user and or tech. For example when I design a substation and all of the wiring for the relays, we don't call out wire color, just wire tags. This way the people install all of the components aren't searching for "x" color on "x" terminal block and tracing it back they simply know that this circuit with tag "x" needs to connect A to B regardless of color.
hopefully that helps
nateroach
From what I can see (and my experience) these are most likely wire tags. This is simply a way to assign a unique # to each wire (in this case for the PCM) that allows people to quickly id a wire without reading through the pin out and or wire color/location.
for example one could say "see wire T41" vs "see the dark blue/yellow wire on pin 21 of the C3 harness" it is simply another wire identifier that is unique to that circuit.
in my experience they do this to make it quicker/easier on the end user and or tech. For example when I design a substation and all of the wiring for the relays, we don't call out wire color, just wire tags. This way the people install all of the components aren't searching for "x" color on "x" terminal block and tracing it back they simply know that this circuit with tag "x" needs to connect A to B regardless of color.
hopefully that helps
nateroach