The Coil-On-Plug (COP) ignition probe is the fastest way to check Coil-On-Plug ignition coils and spark plugs.
The TA398 COP and signal probe from Pico Technology is the easiest and fastest non-intrusive way to check coil-on-plug ignition coils and spark plugs.
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Find misfires fast
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Displays scope patterns of the secondary, faster than scoping the primary
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Can also be used to investigate injectors and other inductive actuators
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Flexible design allows for easier access to hard-to-reach components
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No batteries required
Like distributors, spark plug wires are starting to disappear from cars. With the new COP ignition systems the ignition coils are connected directly to the spark plugs — eliminating the need for the spark plug wires. With no high-voltage spark wires, a COP probe is required to be able to pick up the secondary ignition waveform.
Unlike the BNC TA204 COP Probe, the connecting lead is integral to the TA398 BNC COP Probe, therefore no TA033 (BNC to BNC lead) is required.
This lead is fitted with a PicoBNC interface, allowing it to be recognised by the software for auto-configuration. The lead requires a PicoScope featuring the PicoBNC such as the 4225A or 4425A.
How Does it Work?
The coil–on–plug and signal probe works with most COP systems; it requires no special adaptors, no foil strips, and no batteries. The Pico coil-on-plug and signal probe eliminates the need for back-probing: to use the probe simply press the probe against the coil.
Along with testing COP systems, the coil-on-plug and signal probe can also be used to obtain many other signals, including a secondary ignition waveform on conventional ignition systems.
Designed to save you time, effort and money, the coil-on-plug and signal probe is the fastest way to test both conventional coil-on-plug secondary ignition systems.

Typical Uses
- 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
Documentation
| Title | Language | Issue | Size | Updated |
| Coil-on-plug probe Quick Start Guide | English | 1 | 152 KB | Jun 08 2015 |
If you own a 4225 or 4425 [NON A series Scope] go to the PP357 Page at this url: https://www.interworldna.com/pico/automotive/pico-cop_probe.php









