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26
Scanner Operations
Connecting to a Vehicle
5.3 Connecting to a Vehicle
Make a selection from the systems available for testing list and instructions for connecting the
Scanner to the vehicle with the data cable display on the screen (
Figure 5-9 Sample vehicle connection message
5.3.1 Cables
One of two data cables, one for OBD-II/EOBD compliant vehicles and one for non-OBD-II/EOBD
models, are used to connect the Scan Module to the test vehicle. The 26-pin end of either cable
attaches to the data cable port on the Scan Module and is secured with two captive screws. The
16-pin end of the OBD-II cable plugs directly into the data link connector (DLC) of the test vehicle.
The 15-pin end of the non-OBD-II cable attaches to a cable adapter and is secured with captive
screws, the adapter then plugs into the diagnostic connector on the test vehicle.
A replaceable 7.5 amp blade-type fuse is installed in the vehicle connector end of the cable to
protect the unit from high circuit voltage and current. A green LED, also on the vehicle connector
end of the cable, illuminates whenever there is power supplied to the cable. An LED that fails to
illuminate indicates either a problem on the vehicle power circuit or a blown data cable fuse.
All OBD-II/EOBD vehicles have vehicle battery power (B+) available on the DLC, so the Scan
Module should power on as soon as the cable is connected to the vehicle. The auxiliary power
cable supplies power for testing models that do not have B+ available on the diagnostic connector.
An OBD-I Data Cable and adapters (optional in some markets) are required for testing models that
are not OBD-II or EOBD compliant.
The large end of the auxiliary power cable plugs into the vehicle accessory port. The small end of
the cable fits into a power port built into the side of the cable adapter. An in-line fuse on the
auxiliary cable provides circuit protection.
On-screen instructions on the display device screen tell you which cable, and adapter if needed,
to use once a test vehicle has been identified. The screen message also includes the location of
the vehicle diagnostic connector. Follow the on-screen instructions for connecting to the vehicle.
Содержание D10
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