Teletrac VSR User manual

VSR Trouble Shooting Guide
Document No. Preliminary
Rev: 4/27/2012

The following Guide will help in the detailed trouble shooting process of the Teletrac System. To use this trouble shooting guide you
must have knowledge of the Prism unit, wiring, functionality, and be familiar with the Diagnostic MDT. This guide also assumes the
vehicle is parked in a known good coverage area. Because there are very few visual points to the functionality of the Prism unit, most
of the trouble shooting will be done by the results given on the different Diagnostic MDT test screens. Trouble shooting can be broken
down into different sections, power, Comm/Cellular, GPS and peripherals. If the problem is unknown it is best to start with the
MODE Menu on the Diagnostic MDT.
POWER Section1
The Prism unit has no power ……………………………………………………………1.1 through 1.7
MODE (Diagnostic MDT Menu 5) Section 2
The AVLU is not Active ……………………………………………………………..... 2.1 through 2.5
The Modem is not OnLine …………………………………………………………….. 2.7 through 2.12
GPS is not acquired ……………………………………………………………………. 2.14 through 2.15
The FIL is reporting a fault
COMM (Diagnostic MDT Menu 1) Section 3
The MIN does not match the sticker on the Prism unit………………………………….3.1 through 3.2
The Prism unit has low or no RSSI…………………………………………………….. 3.3
The Prism unit is not Registered ………………………………………………………. 3.4 through 3.8
GPS (Diagnostic MDT Menu 2) Section 4
The number of Satellites is less than 4 …………………………………………………. 4.1 through 4.2
The HDP is greater than 5.0 ……………………………………………………………. 4.3
The SNR is too low …………………………………………………………………….. 4.4
GPS is not acquired …………………………………………………………………….. 4.5 through 4.10

I/O (Diagnostic MDT Menu 4) Section 6
The Ignition switch state does not change ……………………………………………… 6.1 through 6.5
FIL(FaultIndicatorLight) Section7
The FIL stays solid or is blinking ……………………………………………………… 7.1 through 7.4
The FIL does not come on when the Ignition is turned on …………………………….. 7.5 through 7.8
J-BUS (Diagnostic Connection) Section 8
The FIL reports “NJ” …………………………………………………………………… 8.1 through 8.7

Section 1 Test Step Result Repair Steps
Prism Power
and
Connections
1.1) Verify the Prism unit is powered
up.
T) The unit has no power - go to
step 1.2
F) Follow repair steps 1a – 1c
1a) Check the Prism power fuse. Replace
if needed. (Always replace fuses with the
same amperage fuse.)
1b) Check the Power connection point
and confirm that connection is solid. Fix
the connection as needed.
1c) Check the Ground connection point
and confirm that the connection is solid
and free from rust or corrosion. Fix the
connection as needed.
1.2) Using a Multimeter verify that there
is +12VDC at the power connection
point.
T) +12VDC is Present - go to step
1.3
F) Follow repair step 2a
2a) Check the vehicle fuse for that power
source. Replace as necessary.
1.3) Trace the power and ground wires
and make sure there are no breaks or
cuts in the wires. Pull gently on each
connection to make sure they are solid.
T) The wires are Ok – go to step
1.4
F) Follow repair step 3a
3a) Fix any cut or broken wires and
connections.
1.4) Remove the 6-Pin Molex
connector from the Prism unit and
confirm with a Multimeter that there is
+12VDC present on the red wire (Pin
6).
T) Power is present - go to step
1.5
F) Follow repair step 4a4a) Replace Power harness.

Section 1 Test Step Result Repair Steps
Prism Power
and
Connections
1.5) With the 6-Pin Molex connector
removed from the Prism unit, test with
a Multimeter that a ground is present
on the Black wire (Pin 5 - only this
black wire should be grounded Pin 3 is
not grounded).
T) Pin 5 has a good ground - go to
step 1.6
F) Follow repair steps 5a5a) Replace Power harness.
1.6) Test the power connection with a
known good Prism unit
T) The unit powers up go to step
6a
F) Call the Teletrac support line 6a) Replace the original Prism unit.

Section 2 Test Step Result Repair Steps
AVLU, MODEM
& GPS
2.1) Connect the Diagnostic MDT -
Press the control key (CNTL) then
press 5 for the MODE results. Go to
step 2.2
2.2) On the MDT display next to AVLU
it shows “Validate CFG” T) follow repair step 2a F) Go to step 2.3
2a) Wait for 90 seconds and repeat step
2.1. If after 90 seconds the result does
not change, power cycle the unit and
repeat step 2.1 - If you still receive the
same result call the Teletrac support line.
2.3) On the MDT display next to AVLU
it shows “Reset” T) follow repair step 3a F) Go to step 2.4
3a) Wait for 90 seconds and repeat step
2.1. If after 90 seconds the result does
not change, power cycle the unit and
repeat step 2.1 - If you still receive the
same result call the Teletrac support line.
2.4) On the MDT display next to AVLU
it shows “Asleep” T) follow repair step 4a F) Go to step 2.5
4a) Turn the ignition switch to the run
position then repeat step 2.1. If after the
90 second wait the result does not
change, Go to Section 6 - I/O.
2.5) On the MDT display next to AVLU
it shows “CFG Mode” T) follow repair step 5a F) Go to step 2.6
5a) Power cycle the unit. Wait for 90
seconds and repeat step 2.1. If after 90
seconds the result does not change, Call
the Teletrac Support line.
2.6) On the MDT display next to AVLU
it shows “Active” T) Go to step 2.7 F) follow repair step 6a
6a) Wait for 90 seconds and repeat steps
2.1 through 2.5 if this does not solve the
problem call the Teletrac Support line.
2.7) On the MDT display next to
MODEM it shows ”Searching” T) follow repair step 7a F) Go to step 2.8
7a) Wait for 90 seconds and repeat step
2.1. If after 90 seconds the result does
not change, go to Section 3 COMM

Section 2 Test Step Result Repair Steps
AVLU, MODEM
& GPS
2.8) On the MDT display next to
MODEM it shows ”Rebooting” T) follow repair step 8a F) Go to step 2.9
8a) Wait for 90 seconds and repeat step
2.1. If after 90 seconds the result does
not change, power cycle the unit and
repeat step 2.1 - If you still receive the
same result call the Teletrac support line.
2.9) On the MDT display next to
MODEM it shows ”Initializing” T) follow repair step 9a F) Go to step 2.10
9a) Wait for 90 seconds and repeat step
2.1. If after 90 seconds the result does
not change, power cycle the unit and
repeat step 2.1 - If you still receive the
same result call the Teletrac support line.
2.10) On the MDT display next to
MODEM it shows ”Disconnecting” T) follow repair step 10a F) Go to step 2.11
10a) Wait for 90 seconds and repeat step
2.1. If after90 seconds the result does not
change, power cycle the unit and repeat
step 2.1 - If you still receive the same
result call the Teletrac support line.
2.11) On the MDT display next to
MODEM it shows ”OnLine” T) Go to step 2.12 F) follow repair step 11a
11a) Follow the steps 2.7 through 2.10 if
this does not solve the problem call the
Teletrac Support line.
2.12) On the MDT display next to GPS
it shows “UnAcquired” T) follow repair step 12a F) Go to step 2.13
12a) Wait for 90 seconds and repeat step
2.1. If after the 90 second wait the result
does not change, go to Section 4 GPS
2.13) On the MDT display next to GPS
it shows ”Acquired”
T) GPS is working fine go to step
2.14
F) follow repair step 13a
13a) Go to Section 4 GPS. if this does
not solve the problem call the Teletrac
Support line.
2.14) On the MDT display next to FIL it
shows ”NG” T) follow repair step 14a F) Go to step 2.15
14a) Go to Section 4 GPS. if this does
not solve the problem call the Teletrac
Support line.
2.15) On the MDT display next to FIL it
shows ”NJ” T) follow repair step 15a
15a) Go to Section 8 J-Bus. if this does
not solve the problem call the Teletrac
Support line.

Section 3 Test Step Result Repair Steps
COMM – Cellular
Comunications
3.1) Connect the Diagnostic MDT -
Press the control key (CNTL) then
press 1 for the COMM results. Go to
step 3.2
3.2) Check that the value next to MIN is
the same value printed on the unit
sticker
T) Go to step 3.3
F) Follow repair step 3a 3a) Call the Teletrac Support Line to have the unit reprogrammed.
3.3) The value next to RSSI is between
-50 and -103 T) Go to step 3.4 F) Follow repair step 3a 3a) Check the antenna connections make sure they are tight. If OK go to 3b
3b) Connect a reference antenna and run
step 3.1 If the RSSI is good now Replace
the antenna, if the RSSI is still not
between -50 and -103 go to 3c
3c) Connect a reference Prism Unit and
run step 3.1 If the RSSI is good now
Replace the Prism Unit, if RSSI is still not
between -50 and -103 call the Teletrac
support Line
3.4) Does the unit display Registered in
the lower right side of the display. T) Comm is OK Go to section 5 F) Follow repair steps 4a
4a) Power cycle the unit and wait 2
minutes then repeat step 3.1 – If the unit
still does not show registered go to step
3.5

Section 3 Test Step Result Repair Steps
COMM – Cellular
Comunications
3.5) In the bottom right of the display it
shows “Booting Up” T) Follow repair steps 5a F) Go to step 3.6
5a) Wait for 2 minutes then repeat step
3.1 –If something else is now displayed
go to step 3.6. If the unit continues to
show “Booting Up” Try a reference unit. If
the reference unit registers, replace the
unit.
3.6) In the bottom right of the display it
shows “Initializing” T) Follow repair steps 6a F) Go to step 3.6
6a) Wait for 2 minutes then repeat step
3.1 –If something else is now displayed
go to step 3.6. If the unit continues to
show “Initializing” Try a reference unit. If
the reference unit registers, replace the
unit.
3.7) In the bottom right of the display it
shows “UnRegistered” T) Follow repair steps 7a F) Go to step 3.8
7a) The unit is registered with the carrier
but it is not able to communicate with the
Teletrac backend - Call the Teletrac
Support line.
3.8) In the bottom right of the display it
shows “Registered” T) Follow repair steps 8a 8a) Comm is working OK

Section 4 Test Step Result Repair Steps
GPS
4.1) Connect the Diagnostic MDT -
Press the control key (CNTL) then
press 2 for the GPS results. Go to step
4.2
4.2) On the MDT display view the
number next to SAT - is the number
between 4 and 12
T) Go to Step 4.3
F) Follow repair step 2a
2a) If the unit was just powered up, wait
for 90 seconds and repeat step 4.1. Is the
number next to SAT between 4 and 12. If
yes go to step 4.3
2b) Make sure there is nothing blocking
the antenna’s view of the sky – move the
antenna if necessary.
2c) Connect a reference antenna and
repeat step 4.1 - Is the number next to
SAT between 4 and 12. If yes Replace
the antenna.
2d) Connect a reference Prism unit and
repeat step 4.1 - is the number next to
SAT between 4 and 12. If yes replace the
unit.
2e) If the above steps did not correct the
problem call the Teletrac support line.
4.3) On the MDT display is the number
next to HDP is less than 5.0 T) Go to step 4.4 F) Follow repair steps 3a
3a) Make sure there is nothing blocking
the antenna’s view of the sky – Make sure
there are no other antennas within 12” of
the antenna. Move the antenna if
necessary.
3b) Verify the unit is seeing at least 4
satellites. If yes connect a reference
antenna and repeat step 4.1 - Is the
number next to HDP less than 5.0. If yes
Replace the antenna.

Section 4 Test Step Result Repair Steps
GPS
4.4) On the MDT display is the number
next to SNR is greater than 33 T) Go to step 4.5 F) Follow repair steps 4a
4a) Make sure there is nothing blocking
the antenna’s view of the sky – Make sure
there are no other antennas within 12” of
the antenna. Move the antenna if
necessary.
4b) Verify the unit is seeing at least 4
satellites. If yes connect a reference
antenna and repeat step 4.1 - Is the
number next to SNR greater than 33. If
yes Replace the antenna.
4.5) In the upper right hand corner of
the display it shows “Cold Start” T) Follow repair step 5a F) Go to step 4.6
5a) Wait for 90 seconds and repeat step
4.1. If after 90 seconds the result does
not change, power cycle the unit and
repeat step 4.1 – 4.2
4.6) In the upper right hand corner of
the display it shows “Searching” T) Follow repair step 6a F) Go to step 4.7
6a) Wait for 90 seconds and repeat step
4.1. If after 90 seconds the result does
not change, power cycle the unit and
repeat step 4.1 – 4.2
4.7) In the upper right hand corner of
the display it shows “Last Known” T) Follow repair step 7a F) Go to step 4.8
7a) Wait for 90 seconds and repeat step
4.1. If after90 seconds the result does not
change, power cycle the unit and repeat
step 4.1 – 4.2
4.8) In the upper right hand corner of
the display it shows “Asleep” T) Follow repair step 8a F) Go to step 4.9
8a) Turn the vehicle ignition switch to the
run position - Wait for 90 seconds and
repeat step 4.1. If after the 90 seconds
wait the result does not change, Go to
Section 6 – I/O
4.9) In the upper right hand corner of
the display it shows “Acquired 2D” T) Follow repair step 9a F) Go to step 4.9
9a) Wait for 90 seconds and repeat step
4.1. If after the 90 seconds wait the result
does not change, Repeat steps 4.2 – 4.4
4.10) In the upper right hand corner of
the display it shows “Acquired 3D”
T) All is OK
F) Follow repair step 10a
10a) Call the Teletrac support line

Section 6 Test Step Result Repair Steps
I / O – Input
Output
6.1) Turn the vehicle ignition switch to the
RUN position
6.2) Wait for 60 seconds for the unit to
process the input then Connect the
Diagnostic MDT - Press the control key
(CNTL) then press 4 for the I / O results.
Go to step 6.3
6.3) On the MDT display next to IGN it
shows the value ON* T) go to 6.4 F) Follow repair step 3a
3a) With a multimeter check the white
wire (Pin 4) on the Prism power harness
for +12VDC – If there is +12VDC present
go to Step 3e
3b) Check the fuse for the Prism ignition
power – Replace if bad. If the fuse is good
go to 3c
3c) Verify there is +12VDC at Prism
Ignition vehicle tap point. If no power is
present trouble shoot the vehicle power
source.
3d) If power is present at the fuse but not
at the Prism Power Harness , inspect the
wiring for breaks and bad connections.
3e) Connect a reference Prism unit and
repeat step 6.2 – If the new unit shows
the ignition replace the Prism Unit.
6.4) Turn the vehicle ignition switch to the
off position Wait for 30 seconds - Press
the control key (CNTL) then press 4 for
the I/O results. Go to Step 6.5
6.5) On the MDT display next to IGN it
shows the value OFF T) All is OK F) Follow repair step 4a
4a) With a multimeter check the white
wire (Pin 4) on the Prism power harness
for +12VDC – if there is power present
with the ignition switch off the Ignition
source is not correct. Move the wire to a
correct Ignition source.

Section 7 Test Step Result Repair Steps
FIL – Fault
Indicator Light
7.1) Connect the Diagnostic MDT -
Press the control key (CNTL) then
press 5 for the MODE results. Go to
step 7.2
7.2) On the MDT display next to FIL it
shows a “NG” T) Follow repair step 2a F) Go to Step 7.3 2a) Go to section 4 GPS
7.3) On the MDT display next to FIL it
shows a “NJ” T) Follow repair step 3a F) Go to Step 7.4 3a) Go to section 8 J-Bus
7.4) On the MDT display next to FIL it
shows “OK” T) All is OK.
7.5) Turn the vehicle ignition switch to
the Run position and observe the FIL –
Go to step 7.6
7.6) Did the FIL illuminate for 2
seconds
T) All is OK with the FIL
F) Follow repair step 6a
6a) With the vehicle ignition switch in the
run position use a multimeter to check the
white wire on the FIL for +12VDC – if
there is power present – Go to step 7.7 –
If no power is present go to Section 6.
7.7) Is the black wire on the FIL
connected to a good ground
T) Ground is present - Go to step
7.8
F) Follow repair step 7a
7a) Check the Ground connection point
and confirm that the connection is solid
and free from rust or corrosion. Fix the
connection as needed.
7.8) Using a Multimeter check the
yellow wire on the FIL for ground
T) Ground is present - Follow
repair step 8a
F) No ground is present - Follow
repair step 8b
8a) Disconnect the 6-pin molex connector
from the Prism unit. Does the ground go
away? if yes Turn the Ignition switch to
the run position. Does the light illuminate?
– if no replace the FIL – if yes repeat
steps 7.1 through 7.4
8b) Verify the wiring is solid – Replace the
FIL

Section 8 Test Step Result Repair Steps
J-Bus
8.1) Connect the Diagnostic MDT -
Press the Message Key (MSG) press 5
then press send
8.2) Wait for three minutes then - Press
the control key (CNTL) then press 5 for
the MODE results. Go to step 8.3
8.3) On the MDT display next to FIL it
shows ”OK”
T) The J-Bus is OK
F) The display shows “NJ” go to
step 8.4
8.4) Verify all connections are solid and
there are no cuts in the cables
T) The connections are OK - Go to
step 8.5
F) Follow repair step 4a
4a) Repair the connections / cables as
necessary.
8.5) Test the Diagnostic port for
+12VDC ( use the pin out in the
Installation Guide for reference )
T) The port has +12VDC - Go to
step 8.6
F) Follow repair step 5a
5a) Trouble shoot the vehicle for the
power source to the bus.
8.6) Connect Ryder diagnostic test
equipment to the bus. Verify data is
present on the Bus.
T) Data is present - Go to step 8.7
F) Follow repair step 6a
6a) Trouble shoot the vehicle bus.
8.7) Replace the J-Bus adapter with a
reference adapter. Run steps 8.1
through 8.3 Is it OK now?
T) All is OK follow Step 7a
7a) Replace the J-Bus adapter