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6.3.6 Connector P3
Note the different signal locations, depending on PC board revision level.
Connector P3 on the AVT-718 board is a DA-15P connector and will mate to any industry
standard DA-15S connector. It can be connected to a vehicle OBD-II connector through an
optional OBD-II cable (AVT order number 101-002 and 101-010).
When the AVT-718 board is installed in the enclosure, P3 is labeled: “VEHICLE NETWORK.”
CAUTION
The user should be aware of possible signal conflicts between the
AVT-718 and the vehicle J1979 (OBD-II) connector.
Damage may result to either or both the AVT-718 and the vehicle
if improper signals are connected.
The AVT-718 supports more protocols than called out in the OBD-II specification (SAE J1979).
As such the user should exercise extreme caution when connecting the AVT-718 directly to a
vehicle. Additionally, only some of the 16 pins on the OBD-II connector are assigned known
signals. All other pins are used by the manufacturer at will.
There may be signal conflicts that could result in damage to the AVT-718 and/or vehicle. It is
for this reason that JP1 is available on the AVT-718 board - the user can change the signal to pin
configuration on the AVT-718 to match the vehicle signal pin-out on the OBD-II connector.
Refer to Section 6.3.2 for additional information about JP1.
Refer to the AVT-718 unit block diagram, Figure 1. Included on the block diagram are all signal
assignments and pin numbers for JP1 and P3.
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