TELETRAC NAVMAN TM470 Series, Installation Overview

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VLU Troubleshooting
63

No Power or Ignition to the Unit -
Check the TM470 Power &
Ignition fuses. Replace if needed. (Always replace fuses with the same
amperage fuse.)
a. Check the Power connection point and confirm that connection is
solid. Fix the connection as needed.

*** If unit is a TM470V8 power and ground will come from JBus
connection. ***
b. Check the Ground connection point and confirm that the connection is
solid and free from rust or corrosion. Fix the connection as needed.

*** If unit is a TM470V8 power and ground
will come from JBus connection. ***
c. Check the vehicle fuse for that power source. Replace as necessary.

*** Vehicles with JBus the factory vehicle fuse
will sometimes blow causing unit not to
receive power. **
d. Fix any cut or broken wires and connections. *** Most installs will have
1(JBus) to 3 (Tracking only) connections wires. Power, Ignition &
Ground***

No GPS
a. Remove antenna connectors and make both connectors don’t have any
bent pins on the inside of the connectors.
a. Make sure antenna hasn’t fallen down and the antenna has the correct
side facing the windshield of the vehicle.
a. The correct side should say sky side. Make sure antenna isn’t blocked by
metal and is only covered by plastic if antenna is hidden under dash.

Display is Not Working: No power to Tablet no red light, Tablet stuck
on loading stage
a. Remove the Tablet and check for broken or stuck cradle Pins
b. Check and make sure that DB9 is connected to TM450/470 power harness
c. Check for bend or brakes in the CTO cable.
d. Try swapping out CTO cradle
e. Try swapping out CTO

Android will not pair or doesn’t see Bluetooth:
Disconnect power to the
unit then unplug Bluetooth. Reconnect Bluetooth then reconnect power to the unit:
make sure Bluetooth is secured and not hanging down loose. Try swapping out
Bluetooth or Android if the steps above do not work.

Android restart/reboot when it has a route.
Request a replacement from
your account rep. Tablet probably needs firmware updated

Android app keeps crashing.
Request a replacement from your account rep.
Tablet probably needs firmware updated

No Diagnostics
a. Check and make sure JBus or OBDII cable is connected.
b. Check and make sure OBDII y cable is plugged directly to the Factory OBDII
cable and not through a 3
rd
cable
c. Check for blown fuse on vehicle. ** should be a 10amp fuse on fuse box for
Ford & Freightliners , 20amp fuse marked LTR for Chevy vehicles **

Unit will not register:
a. Unplug Power harness wait 10 seconds then reconnect unit.
b. Check and make sure the purple antenna is securely connected to the unit and
pins are not bent.
c.
Disconnect power then remove SD card: to make sure sim card holder isn’t
broken, try cleaning the SD card and put back into unit. Reconnect power to
unit.