Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Freightliner Motorhome Chassis Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 06-13-2021, 02:53 PM   #1
Rd1
Senior Member
 
Join Date: Mar 2016
Posts: 632
PDM and Trans Com fail

Does anyone have documentation on the PDM port assignments and the port pin assignments?

Have a Trans com fail. The Allison TCM is not getting power from the PDM box. Trying to determine if the issue is with wiring harness or at the PDM. Just need the info on the PDM port that supplies the TCM.

Thank you.
__________________
17LADP/FCCC
Rd1 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-16-2021, 11:35 AM   #2
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 23,650
Freightliner should be able to provide wiring schematics for your chassis , they provided them to me for my 99.

Call the help line with your serial number , and ask about a PDM recall .

There are posts concerning a recall , I'll see if I can track them down.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 06-16-2021, 11:51 AM   #3
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 18,216
Quote:
Originally Posted by Rd1 View Post
Does anyone have documentation on the PDM port assignments and the port pin assignments?

Have a Trans com fail. The Allison TCM is not getting power from the PDM box. Trying to determine if the issue is with wiring harness or at the PDM. Just need the info on the PDM port that supplies the TCM.

Thank you.
You are aware that there is a recall on the PDM's, for losing power? Had mine replaced last year.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
Dutch Star Don is online now   Reply With Quote
Old 06-16-2021, 11:54 AM   #4
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 23,650
Don , thanks for chiming in , I was off looking to link the OP to your thread.

http://www.irv2.com/forums/f258/frei...ll-501172.html
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 06-26-2021, 03:25 PM   #5
Rd1
Senior Member
 
Join Date: Mar 2016
Posts: 632
Thank you all for the replies.

FCCC would never provide me with their schematics. They even refused to help with the Trans Comm fail issue. I have called them up on, one too many defects which they were/are aware but not willing to disclose. The PDM issue was one such defect which I had been at loggerheads for nearly 2 years starting in 2017. The partial account is here #8

As for the trans comm see here for the likely cause and the likely resolution for the newer model chassis (likely 2016 and later).
__________________
17LADP/FCCC
Rd1 is offline   Reply With Quote
Old 07-05-2021, 04:36 PM   #6
Senior Member
 
Tiffin Owners Club
Join Date: Feb 2019
Posts: 135
I charted out the PDM, creating a spreadsheet that I tried to attach but apparently only pictures are allowed. PM me your email address and I can beam it to you if you'd like. You may need a little assistance in decoding it, but here's an example...

In row 28, you have F19/TCM IGN/10A/J7 pin 4/R2 #87

The F19 is a number I assigned to the fuse. There are 5 fuses on the top row, 4 on the 2nd row, etc. I numbered them from left to right.

TCM IGN is the same verbiage that you'll find on the PDM cover.

10A is the fuse size

J7 pin 4 means that the bottom of the fuse (see row 6) is connected to pin #4 of Jack 7.

R2 #87 means that the top of the fuse is connected to the #87 pin on Relay #2.

Looking at row #3 shows that Relay #2 is the Powertrain Ignition Relay. It is activated by pins #85 & #86 which are connected to Jack #10's pins 5 and 8. When activated, the 12 volts on relay pin #30 are connected to the tops of fuses #10 through #19.

Looking at row #148 shows Jack 7 pin #4 is associated with TCM IGN and that pin is connected to the bottom of F19 (fuse #19). The dash in column E indicates that there is no wire connected to pin #4 on Jack 7, so even though 12V should be present on that pin when the ignition key is on, it doesn't do anything because it's not connected to anything.
Attached Thumbnails
Click image for larger version

Name:	Row 28.jpg
Views:	6
Size:	7.5 KB
ID:	334851   Click image for larger version

Name:	Row 6.jpg
Views:	5
Size:	9.1 KB
ID:	334852  

Click image for larger version

Name:	Row 3.jpg
Views:	7
Size:	23.6 KB
ID:	334853   Click image for larger version

Name:	Row 148.jpg
Views:	4
Size:	7.4 KB
ID:	334854  

__________________
2016 Tiffin Phaeton 36GH
2013 Nissan Xterra S 4WD manual transmission
jeskibuff is offline   Reply With Quote
Old 07-05-2021, 04:45 PM   #7
Senior Member
 
Tiffin Owners Club
Join Date: Feb 2019
Posts: 135
Here's the spreadsheet in CSV format if you'd like to import it into a spreadsheet program:

Song Chuan 897-1AH-C-R1 U06 relays (3),,85,86 (Ground),87,30,
R1,Module Ignition relay,J10 pin 5,J10 pin 8,"F6,F7,F10-F13 top",12V,
R2,Powertrain Ignition relay,J10 pin 5,J10 pin 8,F10-F19 top,12V,
R3,Chassis Ignition relay,J10 pin 5,J10 pin 8,F20-F26 top,12V,
,,,,,,
"Vertical fuses, by row",,Rating,Bottom,Top,,
F1,TCM BAT,10A,12V,J6 pin 14,,
F2,Blank,,12V,J6 pin 4,,
F3,Blank,,12V,J6 pin 5,,
F4,Blank,,12V,J6 pin 6,,
F5,Blank,,12V,J6 pin 7,,
,,,,,,
F6,ATD IGN,10A,J6 pin 11,R1 #87,,
F7,Blank,,J6 pin 10,R1 #87,,
F8,DIAGNOSTIC,5A,J6 pin 9,12V,,
F9,Blank,,J6 pin 12,,,
,,,,,,
F10,ABS IGN,10A,J6 pin 8,R1 #87,,
F11,Blank,,,R1 #87,,
F12,Blank,,,R1 #87,,
F13,Blank,,,R1 #87,,
,,,,,,
F14,Blank,,J7 pin 3,R2 #87,,
F15,Blank,,J7 pin 5,R2 #87,,
F16,Blank,,J7 pin 6,R2 #87,,
F17,Blank,,J7 pin 7,R2 #87,,
F18,ECM IGN,5A,J7 pin 14,R2 #87,,
F19,TCM IGN,10A,J7 pin 4,R2 #87,,
,,,,,,
F20,ALT IGN,10A,J7 pin 11,R3 #87,,
F21,blank,,J7 pin 13,R3 #87,,
F22,Fan clutch,5A,R4 #30,R3 #87,,
F23,DEF gauge,5A,J7 pin 12,R3 #87,,
,,,,,,
F24,DRN VLV IGN,15A,J7 pin 8,R3 #87,,
F25,AIR DRY IGN,15A,J7 pin 9,R3 #87,,
F26,FUEL HTR,20A,J7 pin 10,R3 #87,,
,,,,,,
"Horizontal fuses, by column",,Rating,Left,Right,,
F27,TAG MOD BAT,5A,,12V,,
F28,Blank,,,12V,,
F28,Blank,,,,,
,,,,,,
F29,Blank,,,12V,,
F30,TOW REV LPS,20A,R5 #30,12V,,
F31,Blank,,R9 #30,12V,,
,,,,,,
F32,DEF LINE HTR,15A,12V,,,
F33,ABS BAT,15A,,12V,,
F34,TOW LH TRN,20A,R6 #30,12V,,
F35,TOW RH TRN,20A,R10 #30,12V,,
,,,,,,
F36,Blank,,12V,,,
F37,TOW IGN,30A,12V,R7 #30,,
F38,TOW MKR LPS,20A,12V,R11 #30,,
,,,,,,
F39,REV LPS,10A,12V,R13 #30,,
F40,Blank,,12V,,,
F41,ACM BAT,30A,12V,,,
,,,,,,
F42,Blank,,12V,J9 pin 5,,
F43,Blank,,12V,R8 #30,,
,,,,,,
"Song Chuan 301-1C-C-R1 U01 relays (9, by row, left to right)",,86 coil 1,30 (hot),87 normally open,87A norm clsd,85 Coil 2
R4 ,FAN CLTCH RLY,J8 pin 7,F22 bottom,J7 pin 2,J7 pin 1,J8 pin 8
R5,TOW REV LPS RLY,J10 pin 8,F30 left,J5 pin 2,nc,J10 pin 3
R6,TOW LH TRN RLY,J10 pin 8,F34 left,J5 pin 13,nc,J10 pin 7
R7,TOW IGN RLY,J10 pin 8,F37 right,J5 pin 5,nc,J10 pin 9
R8,Blank,J8 pin 14,F43 right,J9 pin 3,J9 pin 4,J8 pin 12
R9,blank,J10 pin 2,F31 left,J5 pin 1,J5 pin 8,J10 pin 1
R10,TOW RH TRN RLY,J10 pin 8,F35 left,J5 pin 12,nc,J10 pin 6
R11,TOW MKR LPS RLY,J10 pin 8,F38 right,,nc,J10 pin 10
R12,Blank,nc,nc,nc,J9 pin 9,J8 pin 9
,,,,,,
,,,,,,
"Song Chuan 303-1AH-C-R1 U01 relays (4, by column, left to right)",,86,30,87,,85
R13,REV LPS RLY,J8 pin 5,J9 pin 10,F39 right,,J8 pin 6
R14,NEUT STRT RLY,J8 pin 16,J9 pin 12,J9 pin 11,,J8 pin 15
R15,DEF SUPPLY MOD,J8 pin 12,,J9 pin 13,,
R16,DEF LINE HTR,J8 pin 2,,J9 pin 6,,
,,,,,,
Jack 5,Function,Connection,,Wire color,,
1,blank,R9 #87,,,,
2,TOW REV LPS RLY,R5 #87,,blue,,
3,,,,,,
4,,,,,,
5,TOW IGN RLY,R7 #87,,pink,,
6,,,,,,
7,,,,,,
8,blank,R9 #87A,,red,,
9,,,,,,
10,,,,,,
11,,,,,,
12,TOW RH TRN RLY,R10 #87,,green,,
13,TOW LH TRN RLY,R6 #87,,yellow,,
14,,,,orange,,
,,,,,,
Jack 10,,,,,,
1,blank,R9 #85,,stub,,
2,blank,R9 #86,,stub,,
3,TOW REV LPS RLY,R5 #85,,blue,,
4,,,,stub,,
5,Ignition,"R1,R2,R3 #85",,lilac,,
6,TOW RH TRN RLY,R10 #85,,green,,
7,TOW LH TRN RLY,R6 #85,,yellow,,
8,Ground,Numerous,,black,,
9,TOW IGN RLY,R7 #85,,lilac,,
10,TOW MKR LPS RLY,R11 #85,,black,,
,,,,,,
Jack 9,,,,,,
1,,,,brown,,
2,,,,-,,
3,Blank,R8 #87,,-,,
4,Blank,R8 #87A,,-,,
5,Blank,F42 right,,-,,
6,DEF LINE HTR,R16 #87,,gray,,
7,,,,red,,
8,,,,-,,
9,Blank,R12 #87A,,-,,
10,REV LPS RLY,R13 #30,,blue,,
11,NEUT STRT RLY,R14 #87,,purple,,
12,NEUT STRT RLY,R14 #30,,purple,,
13,DEF SUPPLY MOD,R15 #87,,gray,,
14,,,,red,,
,,,,,,
Jack 8,,,,,,
1,,,,gray ,,
2,DEF LINE HTR,R16 #86,,gray,,
3,,,,-,,
4,,,,-,,
5,REV LPS RLY,R13 #86,,white,,
6,REV LPS RLY,R13 #85,,lilac,,
7,FAN CLTCH RLY,R4 #86,,black/white,,
8,FAN CLTCH RLY,R4 #85,,black,,
9,Blank,R12 #85,,white,,
10,,,,,,
11,,,,orange,,
12,,,,,,
13,Blank,R8 #85,,,,
14,Blank,R8 #86,,,,
15,NEUT STRT RLY,R14 #85,,,,
16,NEUT STRT RLY,R14 #86,,gray,,
,,,,,,
Jack 7,,,,,,
1,To fan clutch,R4 #87A,,gray,,
2,To fan clutch,R4 #87,,-,,
3,blank,F14 bottom,,lilac,,
4,TCM IGN,F19 bottom,,-,,
5,blank,F15 bottom,,-,,
6,blank,F16 bottom,,red/yellow,,
7,blank,F17 bottom,,red/white,,
8,DRN VLV IGN,F24 bottom,,-,,
9,AIR DRY IGN,F25 bottom,,-,,
10,FUEL HTR,F26 bottom,,-,,
11,ALT IGN,F20 bottom,,white,,
12,DEF gauge,F23 bottom,,-,,
13,blank,F21 bottom,,?,,
14,ECM IGN,F18 bottom,,?,,
,,,,,,
Jack 6,,,,,,
1,,,,-,,
2,,,,-,,
3,,,,-,,
4,Blank,F2 top,,-,,
5,Blank,F3 top,,-,,
6,Blank,F4 top,,-,,
7,Blank,F5 top,,-,,
8,ABS IGN,F10 bottom,,orange,,
9,DIAGNOSTIC,F8 bottom,,red,,
10,Blank,F7 bottom,,-,,
11,ATD IGN,F6 bottom,,gray,,
12,Blank,F9 bottom,,-,,
13,,,,-,,
14,TCM BAT,F1 top,,white,,
__________________
2016 Tiffin Phaeton 36GH
2013 Nissan Xterra S 4WD manual transmission
jeskibuff is offline   Reply With Quote
Old 07-06-2021, 01:23 PM   #8
Rd1
Senior Member
 
Join Date: Mar 2016
Posts: 632
Thank you for charting the pdm and posting it. pm.
__________________
17LADP/FCCC
Rd1 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Low battery and Trans com fail warning webbies Class A Motorhome Discussions 2 04-14-2021 03:21 PM
Vansco VMM and PDM Terry W Alpine Coach Owner's Forum 4 09-06-2019 11:05 AM
AC system fail- extension cord fail Geoffpruett RV Systems & Appliances 3 07-01-2018 05:32 PM
VMM and PDM in action Terry W Alpine Coach Owner's Forum 12 04-24-2017 09:46 PM
PDM problem? Smed Alpine Coach Owner's Forum 5 07-17-2010 06:38 PM


All times are GMT -6. The time now is 12:53 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.