
12 DIAGNOSTIC TOOLSET DESCRIPTION
BREAK-OUT BOX DIAGNOSTIC CAPABILITIES
The Break-out Box provides the capability of monitoring data on any combination of
signal lines that connect the vehicle’s electrical/electronic components to the ECU. The
installation of the Break-out Box harness has no effect on the operation of the controller or
the vehicle.
When used in conjunction with the Tester and the program card, the Break-out Box
supports diagnosis of the following electronically controlled vehicle systems:
• Engine
• Automatic Transmission (AT)
• Anti-lock Brake System (ABS)
• Cruise Control System (CCS)
• Theft Deterrent System (TDS)
The Break-out Box can be used to support inspection of:
•Sensors
•Actuators
• Wiring harness shorts or opens
• Open grounds
• ECM/ECU operation
The Break-out Box contains 124 input channels: 120 for ECU inputs and four for external
inputs (analog signals only). The Break-out Box can monitor signals between ±40V, with
the following types of measurements:
• Analog
• Timing
• Frequency
• Pulse Interval
• Pulse Width
• Duty Cycle
• Signal Analysis
• Oscilloscope
External Output Channels on the Break-out Box allow monitoring of up to four signals via
an external source such as a volt meter or oscilloscope.
If a problem is detected in the operation of the Break-out Box or program card, you can
perform a self test on the Break-out Box to help isolate the problem.
Break-out Box hardware components are described in Section 5.0 Break-Out Box Kit
Components on page 29.
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