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Coil On Plug Inductive Signal Probe

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The coil-on-plug (COP) and signal probe from Pico Technology is the fastest way to check coil-on-plug ignition coils and spark plugs.

  • Find misfires fast
  • Displays scope patterns of the secondary, faster than scoping the primary
  • Works on all automotive scopes capable of displaying ignition patterns
  • Can also be used to investigate injectors and other inductive actuators
  • Flexible design allows for easier access to hard-to-reach components
  • No batteries required



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Non-intrusive diagnosis is essential during the initial inspection of a vehicle and the flexible COP/ Signal Probe becomes invaluable in these scenarios. Misfires are a typical example of where the COP probe excels especially with modern multi cylinder engines and restricted access to coil units. The shaft of the signal probe can be formed into any shape in order to access coil units that may be buried under intake ducting or manifold assemblies. Once an offending cylinder has been identified, authorisation can be requested before commencing with a time consuming repair whilst safe in the knowledge the misfire has been delivered before disassembly. The COP/Signal Probe is not only confined to misfire detection:

  • COP units (including restricted access units) HT functionally check
  • HT Leads and coil towers for HT functionality
  • Injectors (Petrol/Diesel) solenoid type for an indication of operation
  • Solenoids for operation check
  • Oil control valves for operation check
  • Throttle motors for activity check
Weight 2 kg
Dimensions 30 x 20 x 10 cm