The Peak Voltage Adapter is a diagnostic accessory used with a standard digital multimeter to accurately measure peak voltages in motorcycle ignition and sensor circuits. Many service manuals require this adapter when testing crankshaft position (CKP), camshaft position (CMP) sensors, and CDI ignition modules. It enables technicians to capture rapid voltage spikes that a multimeter alone cannot reliably read, making ignition system troubleshooting more effective.

Key Features

  • Allows a standard multimeter to measure peak voltage pulses that occur in ignition systems, which are otherwise difficult to capture.

  • Used for testing sensors and ignition modules such as CKP, CMP, and CDI.

  • Simple connection between the multimeter probes and the diagnostic point, with the multimeter set to DC voltage mode.

  • Provides more accurate ignition circuit diagnostics compared to average voltage readings without the adapter.

Typical Applications

  • Testing ignition pickup sensors (CKP/CMP)

  • Diagnosing CDI and digital ignition systems

  • Confirming peak voltage signals during engine troubleshooting