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Section 4 Data Cable / Connections
This section describes basic data cable connection.
Connection of the data cable to the diagnostic tool and vehicle data link connector
(DLC) is required for diagnostic tool operations that require communication with the
vehicle.
Main Topic Links
• Data Cable Connection (OBD-II/EOBD Vehicles) page 11
• Data Cable Connection OBD-I Vehicles page 13
4.1 Data Cable Connection (OBD-II/EOBD
Vehicles)
Only use original Snap-on data cables and accessories with your
diagnostic tool. Total data cable length must not exceed 114.17 inches
(2.9 meters).
z Basic data cable connection procedure:
For OBD-II/EOBD compliant vehicles use the supplied DA-4 data cable.
1. Connect the data cable to the diagnostic tool (Figure 4-1).
Figure 4-1 DA-4 data cable (26-pin end) connection to diagnostic tool
2. After identifying the vehicle using the Scanner or OBD-II/EOBD function (see
Vehicle Identification on page 28) review any on-screen information that may
be provided for data cable connection, usage and DLC location (Figure 4-2).
On-screen cable and adapter connection instructions may be provided while
using the Scanner and OBD-II/EOBD functions. The instructions may also
include the location of the vehicle DLC.
Figure 4-2 Vehicle data cable connection information
The supplied 9 ft. (2.7 m) DA-4 data cable, includes an LED flashlight on the
vehicle DLC connector end (Figure 4-3). The LED flashlight is powered by the
diagnostic tool battery.
Connect: DA-4 Cable.
Location: Under drivers side dash.
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