LAUNCH X-431 PAD III User Manual
121
13.3 Secondary-direct ignition analysis
Connection：
1. Power the Scopebox on: Power is provided to the Scopebox in either of the
following ways:
• Power adaptor: Insert one end of the power adaptor into the Power
interface of the Scopebox, and the other end to the AC outlet.
• Battery clamps cable: Plug one end of the power adaptor into the Power
interface of the Scopebox, and then clamp the other two terminals to the
vehicle's battery (Red to +, and Black to -) respectively.
2. Connect the B-shaped terminal of the USB cable to the Scopebox USB port,
and the other end to the USB port of the diagnostic tool.
3. When the high-voltage wire is exposed, plug the BNC end of secondary
ignition pickup into CH1/CH2/CH3/CH4 channel of Scopebox, then connect
the high-voltage clip to high-voltage line, and crocodile clips to ground.
4. If no high-voltage wire is exposed, dismantle ignition coil of tested cylinder.
Connect one end of the COP extension cord to the ignition coil which should
be grounded via COP earth cord, and insert the other end into the cylinder to
joint with spark plug. Then plug the BNC end of secondary ignition pickup into
CH1/CH2/CH3/CH4 channel of Scopebox, and then connect the high-voltage
clip to high-voltage line, and crocodile clips to ground.
The connection is as follows:
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