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Old 29-12-2011, 10:04 PM
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Gibbmodoll Gibbmodoll is offline
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Join Date: Oct 2009
Location: Madley in Herefordshire Uk.
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Smile Pico's CAN test box.

Plug the into the 16 way port and check out the CAN and the K lines, supply on pin 16 and the ground, test to check comms:, there are a number on the market, some under £50-00 and also link with the scan tool.
http://www.youtube.com/watch?v=_dbal...eature=related

We however use this unit, it's under £50-00, and has lit leds as the pico one, it's the Hickleys HIC0002.

Pin OBD Breakout Box.
This OBDII Protocol Detector & Break Out Box has a wide range of applications in diagnostics, key programming and chip tuning:
An extension of OBD Diagnostic Link Connector (DLC).
For short circuiting of pins.

1,To detect isolated circuits problems.

2, As a power extension cord for small DC testers that need an external power source (maximum 1.2 amps).

3, To monitor data stream while performing test on vehicle using a Scantool.

4, To test circuits with a meter or scope.

5, To perform special functions and tests such as Ohm-out, Bench programming.

Using this OBDII Protocol Detector & Break Out Box not only allows you to switch, cross, parallel interface leads simultaneously to diagnose, analyse, test and monitor the whole testing process on the vehicle, but also give you the comfort, ease and accuracy in performing these tests.
It has colored LEDs that light up to display activity, grounds, and voltage.
It serves as a DLC magnifier (makes DLC 5 times larger), DLC extender (place DLC where you need it) and a SPY (you can monitor the activity on each OBDII dedicated data line).

How to Use:
Connect OBDII Protocol Detector & Break Out Box to the DLC (OBD). As soon as you connect it to DLC it automatically checks the power, grounds, DLC data wires and searches for voltage pulses.

Detecting Protocol in use:
Plug your scan tool or interface into the OBDII Protocol Detector & Break Out Box.
Use the scan tool to view the live datastream.
Check the flashing blue LEDs and match them with the protocols marked on the main frame of the OBDII Protocol Detector & Break Out Box.

Some Typical Applications:
1, VW - To protect the Scan tool such as aftermarket radios on VW's.
2, GM - Transmitter Programming on some GMs.
3, Honda - Set the ECM in SCS mode with your scan tool connected.
4, Lexus - Help diagnose electronics systems (Sirius, GPS) on pin 6 and 14.
5, Bosch - Troubleshoot Bosch controllers that short to ground.

Features:
This Breakout Box is manufactured with durability and high quality materials to provide a lasting and outstanding performance in a rough repair shop surroundings.
It can be easily cleaned with a wet cloth.
It's standard 4 mm female banana jack receptacles accept both standard and sheathed male banana plugs.
Pin 16 socket is protected by a self healing fuse rated at 2 amps.

LEDs Activity:
OBDII Protocol Detector & Breakout Box LEDs allows you to keep tabs on power and ground.
It identifies the protocol used in the vehicle.

RED LEDs
(Pin 16) - automatically turn-on as soon as you plugged into DLC.
RED LEDs turn dim when:
1, Low battery voltage.
2, Wiring to DLC pin 16 is faulty.
3, Grounds circuits has resistance issues.

GREEN LEDs
(Pins 4 and 5) - automatically turn-on as soon as you plugged into DLC. Ground LEDs (Pin 4 and 5) is connected to battery voltage through pin 16.
Therefore, a ground supply on pin 4 will not affect LED 5.
A dim single green LED will indicate a circuit problem with the corresponding circuit.

BLUE LEDs
(Pins 2, 6, 7 and 10) - LEDs should flash when serial data voltage pulses are present in the data line.
Blue LEDs is assigned on pins 2, 6, 7 and 10 to indicate communication with scan tool or interface and for communication protocol identification.
It will turn-on depending on your vehicle model.
For some vehicle models, none or multiple blue LEDs will turn-on as soon as the Breakout Box is connected and you start the ignition.
The brightness of the LEDs depends on the nature of the signal it's pursuing.
The Breakout Box can indentify immediately the protocol used.
The better way to indentify the protocol in use is to set-up the scan tool or interface in to LIVE DATA.
This will lead in a constant data stream between the scan tool and the vehicle, and then you can locate the LEDs that are flashing.

YELLOW LEDs
(Pins 1, 3, 8, 9, 11, 12, and 13) - it should flash when your vehicle manufacturer uses either one on the pins for any function they prefer.

Pin Assignments
Pin No, SAE Designation.
1, Discretionary.
2, Bus + Line of SAE J1850.
3, Discretionary.
4, Chassis Ground.
5, Signal Ground.
6, CAN High of SAE J2284 (ISO 15765-4).
7, K Line of ISO 9141-2 and ISO 14230-4.
8, Discretionary.
9, Discretionary.
10, Bus-Line of SAE J1850 11.
11, Discretionary.
12, Discretionary.
13, Discretionary.
14, CAN Low of SAE J2284 (ISO 15765-4).
15, L Line of ISO 9141-2 and ISO 14230-4.
16, Unswitched Vehicle Battery Positive.

Pins listed as "Discretionary" indicate that the vehicle manufacturers may use them for specified purpose.
Check with the manufacturer's specifications for these connections.
For voltage and current limits, refer to SAE J1962 (ISO 15031-3.3).
Test tool must not draw more than 1.5 amps through the pin number 5.
Switched off the Vehicle Battery Positive has a maximum current capacity of pins 4 and 5 cannot exceed 4.0 amps.

Helpful Tips:
For extra safety, DO NOT connect OBDII Protocol Detector & Break Out Box to the vehicle when you are performing an in-vehicle reflash of the PCM with the test tool or diagnostic device.
When activating some ABS and diagnostics wires to recover flash code, you can use pin 4 or pin 5.
To power small DC loads with maximum 1 amp, you can use pin 16.
If red (power) and green (grounds) LEDs turned dim or flickering when you plugged a scan tool supplied via DLC, it indicate a problem with your vehicle wiring that causes the voltage to drop.
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