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

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.

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