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Prism TM450 Installation Guide for JBus 1708 and 1939  

Teletrac Inc. 

1634-0300 00 

Page 1 

Overview 

The purpose of this document is to provide the installer with instructions on how to install 
the TM450.  Adding TBT (CTO or MDT) and other accessories in conjunction with diagnostics 
is now possible; refer to the appropriate installation guide for reference.   

This document focuses on the installation and deployment of the TM450 interfaced with 
JBUS.  JBUS is commonly found in SEA approved Diesel trucks starting in 1998.  The TM450 
supports 1708 and 1939 with its internal decoder.  There is no need of mechanical 
configuration to select one protocol over the other.  The communication scheme must be 
documented in order to configure the TM450 over the air.   The installer is able to switch 
the JBUS input using a laptop. 

The installation of the system into the vehicle is the most important component of the 
system.  It is very important to test the system and all its features at the end of the 
installation. 

Kit Components 

 

TM450  

 

Combo WEDGE antenna FAKRA (and Installation hardware kit) 

 

Main Power cable for TM450  

 

DB-15 Extension Cable 

 

Y-JBus Cable (6 or 9 Pin) 

 

FIL 

 

 

 

 

 

Summary of Contents for Prism TM450

Page 1: ...Prism TM450 Installation Guide For JBus 1708 and 1939 Document Number 1624 0301 00 Date May 5 2010...

Page 2: ...TM2J 2 Installation 3 Main Power Connections 4 Alternate Power Input 4 Antenna 5 Antenna Placement 5 Hidden Antenna Placement 5 Testing the Installation 6 TM450 Hardware Information 8 Firmware Version...

Page 3: ...pproved Diesel trucks starting in 1998 The TM450 supports 1708 and 1939 with its internal decoder There is no need of mechanical configuration to select one protocol over the other The communication s...

Page 4: ...he antenna This makes perfect antenna connections very simple and more reliable no more lose or too tight connectors The connector features a locking mechanism that guarantees perfect connection every...

Page 5: ...Prism TM450 Installation Guide for JBus 1708 and 1939 Teletrac Inc 1634 0300 00 Page 3 Installation...

Page 6: ...ce of power The ignition connection should be made to a source of power other than the Accessory Alternate Power Input In situations where the JBUS does not have power an alternate power input is supp...

Page 7: ...is angled at less than 60 degrees Do not use on vehicles with racks that overhang the windshield Approved Locations On the top of a flat roof with no obstructions Attached to an approved extension to...

Page 8: ...ce all power and antenna connections are complete make sure the Transceiver is working properly The easiest way to do this is using an MDT 955 Press Control 1 to Display Radio Status Confirm Registrat...

Page 9: ...Web Reporter see the eClient Training Guide or Help Topics in eClient about Creating Reports WARNINGS Installation is NOT complete unless all 3 of the above described steps are completed Testing with...

Page 10: ...und GND Black 6 Positive Battery VBATT Red View looking in to connector Figure 1 Accessory Connector CON2 1 Microphone input MIC IN 2 Normally high switch input INHIGH 3 Ground GND 4 Emergency switch...

Page 11: ...12 6 Smartnav switch input TSW NA 7 Relay driver output RELAY1 Blue 8 SAE J1708 bus A signal J1708A Yellow twisted with Blue 9 CAN bus L signal CANL Brown twisted with Red 10 Microphone input MIC IN...

Page 12: ...ny ______________ Vehicle Number ______________ VIN Number ________________________ Make and Model _______________Year ________License Plates___________ Teletrac Options Installed JBUS OBDII PTO MDT e...

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