OBDII (DLC) Connector Break Out Box
The neoVI DLC LineSpy Break Out Box is allows you to connect your neoVI
FIRE or neoVI RED hardware devices to the vehicle's DLC while simultaneously
monitoring the physical pins of the connector. With each of the 16 pins
available for banana jack or oscilloscope probes, LineSpy gives you an open
connection to your vehicle's networking systems.
View Network Activity without Other Hardware
LineSpy has four LED lights to indicate network activity on HS CAN, ISO 9141,
Class 2, and J1850 PWM. Also Power and Ground LED lights let you know for sure
if you have a good connection to the vehicle's connector.
- Benefits and Features of the neoVI DLC LineSpy
- LineSpy Layout
- Pin 1
- Pin 2 Yellow LED (VPW,PWM)
- Pin 3
- Pin 4 Green LED (Gnd)
- Pin 5 Green LED (Gnd)
- Pin 6 Yellow LED (CAN)
- Pin 7 Yellow LED (KWP,ISO)
- Pin 8
- Pin 9
- Pin 10 Yellow LED (PWM)
- Pin 11
- Pin 12
- Pin 13
- Pin 14
- Pin 15
- Pin 16 Red LED
- Red LED on pin 16
The red LED uses both grounds, pin 4 and 5. This is accomplished by the use
of diodes and effects how the red LED will respond to ground issues. For
example, if the vehicle wiring to pin 4 has a high resistance problem it will
not affect the red LED because it still has a good ground path via diode 2 and
pin 5, the signal ground. As a general rule, the red LED will dim if:
- The battery voltage is low.
- The wiring to DLC pin 16 is defective.
- Both ground circuits have resistance issues.
- Green LED on pins 4 and 5
Each ground LED (pin 4 and 5) is connected to battery voltage via pin 16.
Therefore, a ground issue on pin 4 will not affect LED 5. A dim individual green
LED will indicate a circuit problem with the corresponding circuit.
- Yellow LED on pins 2, 6, 7 and 10
Yellow LED's light up on pins 2, 6, 7 and 10 to show communication with scan
tool and for communication protocol identification. When the yellow LEDs
illuminate depends on the vehicle. For some vehicles none or multiple yellow
LEDs will illuminate as soon as the LineSpy is connected and the ignition is
A Ford PWM is an example. Pin 2 and 10 will start flashing as soon as the
ignition is turned on even though a scan tool is not connected. Also, the
brightness of the LED depends on the nature of the signal it is following.
The LineSpy LEDs can be used to quickly identify the communication protocol.
The best way to identify the protocol is to set the scan tool up for LIVE DATA.
This will result in a constant data stream between the neoVI and the vehicle.
Next, locate the LED(s) that are flashing.
- Only LED 7 flashing: Protocol is either KWP or ISO 9141
- LED 2 and LED 10 flashing: Protocol is PWM
The User Manual goes into more detail.
- Self-Healing Fuse on pin 16
The socket input to pin 16 is protected by a self healing fuse between the
socket and the cable. If for some reason a short were to develop between the pin
16 banana socket and a ground outside the LineSpy the fuse will open protecting
the LineSpy, the DLC connector and associated wiring. Note that if a scan tool
is connected to the LineSpy when a short occurs as described above the power to
the scan tool will not be interrupted. This fuse is rated at 1.5 amps and will
open the circuit at 2.7a (temperature dependent). Reset the fuse by
disconnecting the fuse from power and let cool.