Diag4 Bike Parallel Diagnostic System Adapter - 12/4 PIN Security Adapter

Diag4 Bike Parallel Diagnostic System Adapter for 12/4 PIN security connectors, designed to measure input and output signals from electronic fuel injection (EFI) modules and other engine management systems on running motorcycles. The breakout box inserts between the EFI module and wiring harness, allowing full system operation while providing access to all connector pins for diagnostics.

Features

• Measures EFI module input and output signals
• Works on running engines
• Breakout box with clearly labeled monitoring points
• All EFI connector pins accessible

Specifications

• Brand: Diag4 Bike
• Manufacturer Part #: AT 531 4077
• Length: 11.5 in
• Width: 7.25 in
• Height: 2.25 in
• Weight: 1.55 lbs
• Country of Origin: Czech Republic

Fitment

Fits motorcycles with 12/4 PIN security connector EFI modules. Designed for parallel diagnostics on fuel injection systems.

Frequently Asked Questions

Can I use this while the engine is running?

Yes. The breakout box sits in-line between the EFI module and harness, so the motorcycle continues to run normally while you measure signals.

What exactly can I measure with this adapter?

Input and output signals from the EFI module and other electronic modules — allowing you to diagnose fuel injection, ignition, and sensor issues.

Do I need any special test equipment to use this?

You'll need a multimeter or oscilloscope to read the monitoring points on the breakout box. The adapter provides access; the measurement tool is separate.

Is this a permanent installation?

No. The adapter plugs in between the EFI module and harness for diagnostics, then can be removed and stored.