Rand McNally OBDII Installation Instructions Manual

OBDII Converter Installation Instructions

For use with your TND™ 760 & Light or
Medium Duty Cars or Trucks

Page 1

1. Introduction

The OBDII converter kit is an off-the-shelf product from
B&B Electronics. The OBDII converter enables the Rand McNally
TND™ 760 to connect to the OBDII data bus in light duty
vehicles and passenger cars.

This document describes how to connect the OBDII converter to

™

the TND
of when using the OBDII converter as part of your vehicle
monitoring system.

Additional documentation can be found at

www.randmcnally.com/OBDII.

760, and the operational considerations to be aware

2. Installation

2.1 Warnings

Rand McNally recommends that a professional automotive
technician install the OBDII converter.

A common installation location is under the dash of the vehicle.
The installer must be careful to secure the OBDII converter and
any wiring in a location that will not interfere with the driver,
the operation of the vehicle, or the operation of the airbag
system. The installer must also consider the possibility that the
mounting hardware may fail. Similarly, such a failure should not
cause interference with the driver, the operation of the vehicle,
or the operation of the airbag system.

2.2 Required Items

1

B&B OBDII Converter Kit

Part Number: RMLDVSV2-KIT

Kit contains the following items:
1A. OBDII Converter
1B. OBDII Converter Mounting Hardware (zip ties &
double-sided tape) (not pictured)
1C. OBDII Y Cable

™

Rand McNally TND

2

with B&B Termination

Part Number: 052800655

760 Flying Lead Cable

2

1A

1C

Page 2

2.3 OBDII Converter Installation Process

1. Unmount the vehicle OBDII connector.

2. Mount the OBDII connector on the OBDII Y cable where the

vehicle OBDII connecter was located.

3. Plug the OBDII Y cable to the OBDII converter, and secure it
by tightening the two screws on the cable.

4. Connect the OBDII plug on the OBDII Y cable to the vehicle
OBDII port.

5. Connect the TND™ 760 flying lead cable to the OBDII
converter, and secure it by tightening the two screws on
the cable.

6. Connect the TND™ 760 cable to the TND™ 760.

7. At this point the installer should perform the verification

test identified in section 2.4. NOTE: If there are any issues

with the connections, it will be easiest to trouble shoot
before securing the OBDII converter and the cables.

8. Mount the OBDII converter in a secure location.

9. Secure all loose cables, with the zip ties or double-sided tape

provided in your converter kit.

2.5 LED Operation

2.4 Verification

Please follow these steps to verify the installation:

1. Before securing the OBDII converter under the dash, ensure
the LEDs are visible to support a quick operational test.

2. With everything connected properly, turn the ignition to the
ON position, and start the engine.

3. Watch the LEDs on the OBDII converter. You should see the

OBDII converter in “detecting vehicle” mode and then

transition to “normal operation” mode. LED definitions are
shown in section 2.5 for reference.

4. Once the OBDII converter enters normal operating mode,
it should begin to transmit data via the J1708 link to the

™

TND

760 (this may take several seconds).

5. You will need to login to the TND™ 760. From the 760 main
menu, click on SYSINFO, DIAGNOSTICS, and then JBUS to
verify the 760 is receiving JBus data. It is normal to see a
message that says “MISSING PARAMETERS” since not all
vehicles support all the necessary parameters. Also, the
OBDII converter computes some messages, and those
messages may take additional time to initialize before they
can be sent.

Mode

1

2

3

4

5

6

7

8

9

10

Red
LED

(Power)

On On Off Normal operation Normal operation

On SB Off Detecting vehicle Detecting vehicle

Off FB Off Database version mismatch Database needs to be updated

Off SB Off Update in progress Update in progress

Off VSB VSB Device asleep Device asleep

Off Off Off Device unpowered Device unpowered

Off On FB Error FPGA Image Invalid Firmware needs to be updated

Off Off FB Error with EMM code Update System Manager

Off Off FB EMM checking CRC of Images

Off SB FB

Green

LED

(Activity)

Red
LED

(Debug)

Error writing/reading to/from flash
during update

LED state descriptions

On (LED_ON): lit, solid
Off (LED_OFF): unlit
FB (LED_FAST): Alternating on-off; 125ms on, 125 ms off
SB (LED_SLOW): Alternating on-off; 0.5s on, 0.5s off
VSB (LED_VERY_SLOW): Alternating on-off; 0.25s on, 2s off

Actual State Customer Description

Wait 10 seconds. If state does not
change, see Mode 8.

Restart update of current component