Quick inspection for authority agents
A traffic light in 2 or 3 minutes at a roadside control: what it reads, what each color means and what it does not claim.
Reviewed by Daniel Morales, founder of Reprorace SL, on
Where: Diagnostics › More tests › Service functions › Channel “v2 procedures (beta)” › “One-click full diagnosis” › “Quick inspection (authority agents)”
Important: Only people with a current authority-agent authorization (and the Hub administrator) see it. It is read only: it writes nothing to the vehicle and reads no PIN, keys or secrets. Every use is entered in the usage log.
- Connect the unit to the diagnostic connector, switch the ignition on and choose “Quick inspection (authority agents)”.
- Choose the unit and type the vehicle details the screen asks for.
- Press the big button “Start the quick inspection” and wait: nothing else needs to be touched.
- Read the overall color and the reasons. Each reason says what was seen and which source the rule rests on.
- If needed, press “Save the reads in the case file” to add them to an open case file, which already has its legal basis.
| Light | What it means |
|---|---|
| Green | Nothing worth noting was found in what could be read. |
| Amber | There are points worth a look, or that could not be checked. |
| Red | There are findings that call for an immediate review by a person. |
What it checks:
- That the vehicle identification number (VIN) is the same in every module.
- That the mileage matches between modules, within a tolerance the report states.
- Whether a part, a software or the programming fingerprint changed compared with an earlier reading of the same vehicle in this session.
- Whether a module asks for its warning lamp: for airbag, brakes and steering it is red.
- Emissions: the engine lamp, readiness checks not completed and faults of the system that cleans the exhaust gases. It only detects them; it changes nothing.
- Whether the fault codes were cleared recently, and the programming fingerprints to note down (they do not change the color).
Important: The traffic light is an aid, not a conclusion. A finding does not by itself prove tampering or an offence: there are legitimate changes (repairs, updates, replaced parts). The decision always rests with the person inspecting and the competent authority.
If a point could not be read (for example on a vehicle without a CAN connection), the traffic light says so and that point does not turn it green.
This is forensic mode and it only reads. Repairing and adapting is another mode, diagnosis, with its own service functions. More in “Forensic mode and diagnosis mode”.
More guides in this section
- How a remote session works
- Tunnel plan: connect a tool to the vehicle remotely
- Accept or withdraw remote access to your vehicle
- Collaborating in a session: messages, prompts and photos
- Unit PassThru mode from the app
- PassThru on Mac, Linux and iOS
- Assistance requests, appointments and work orders
- Legacy vehicle configuration and diagnostics: VAG and other makes
- Modern vehicle coding and programming
- How to diagnose each type of vehicle
- Automatic diagnosis: one tap and it explains
- Reading a vehicle and sharing the report
- CANopen diagnostics for machinery
- Vehicle details: identifying it by the VIN
- Live dashboard, service functions and battery test
- v2 procedures: beta and operational
- Control unit images: store, edit and prepare writing
- Forensic cases: custody of forensic reads
- Forensic mode and diagnosis mode
- Forensic authorizations: who can use the forensic reads
- Aftertreatment expert review (sensors, monitors and indicators)
- Compatibility notices for your tool
- CAN captures
- Pre-purchase report
- Vehicle report
- Battery health of electric and hybrid cars
- Asking Diaglana for help
- Your first read: understanding the result and what to do
- Diagnosis options: each setting and when to change it
- Workshop settings: requests, orders, network and notices
- Reading: choosing the protocol and understanding the OBD on UDS report
- What a fault code means
- Live data: dashboards, recording and export
- Attaching fault codes to a work order
- Procedures that write, program or authenticate
- ISOBUS: reading and changing an implement's NAME
- Diagnosis over Ethernet (DoIP)
- Download Diaglana PassThru for Windows, Mac and Linux
- Authorizing a PC for PassThru
- Diaglana PassThru updates
- AI diagnosis assistant: asking for help with a read
- Connect your AI (Claude or another) to your vehicle