**For the user’s guide Click Here.**
A version of the DAWN OBD Inspector™ has been approved by the California Air Resource Board (CARB) for their Clean Truck Check and is described on this webpage.
For other inspection applications of the DAWN OBD Inspector including detecting tampering click here.
DAWN OBD Inspector™ is a small, easily portable solution and quick to install. It is ideal for the roaming inspector or at a service site. Just attach the hardware to the vehicle network connector, turn on the engine, and open the smart phone app. Complete the test within 2 minutes. DAWN (Data Acquisition With Networks) is the umbrella name for HEM Data’s products.
California Clean Truck Check
The California Air Resources Board (CARB) has developed the Clean Truck Check to ensure that heavy-duty vehicle emission control systems function properly and that emissions remain low throughout their operating life. The Clean Truck Check applies to nearly all diesel and alternative fuel vehicles with a gross vehicle weight rating (GVWR) of over 14,000 pounds, including all out-of-state and out-of-country vehicles. Vehicles with diesel engines that are model year 2013 and newer (and 2018 and newer hybrid or alternative fuel engines) are required to submit OBD data. Data is acquired using the vehicle’s OBD system to determine whether a vehicle’s emission control systems are functioning properly.
Interested test personnel must successfully complete a free online training session from CARB. An approved tester will receive a Tester ID that is valid for 2 years. A Test ID is required to use OBD Inspector. See the details of the CARB Clean Truck Check.
Components of DAWN OBD Inspector™
The DAWN OBD Inspector consists of three components
- CAN Mini Streamer™ hardware (dongle)
- iPad or iPhone (iOS 12.4 and up)
- DAWN OBD Inspector™ software
CAN Mini Streamer™ Hardware
HEM Data’s CAN Mini Streamer sends the vehicle data to the OBD Inspector app. The Mini Streamer hardware conveniently fits directly on the 9-pin J1939 connector. An adapter cable works for the 16-pin OBD-II connector. Baud rates of 250k, 500k, and 1000k are automatically detected.
CAN Mini Streamer™
The Mini Streamer acquires all necessary vehicle data and sends it wirelessly to the DAWN OBD Inspector™ app. Therefore, test personnel don’t need to climb into the cab.
OBD Inspector™ Software
OBD Inspector is supported for iPad and iPhone. As the app receives the data from the Mini Streamer hardware using a WiFi connection, the app displays real-time information to the user as the test is progressing.
The app is approved by CARB for J1939 (9-pin) and J1979 (16-pin) support. The app is on the Apple App Store. To activate the app, a license needs to be purchased from HEM Data.
CARB requires that the app have internet access to start the test so that the data is immediately forwarded to the CARB website. If your iPad or iPhone doesn’t have cellular service, you can access the internet using your office network or other hotspot.
Below is a screenshot of the real-time data during the test. The progress bar at the bottom shows the user when the test has been completed.
Parameters table showing live data
The screenshot above shows the live values table. A progress bar is shown at the bottom.
VIN Reader
CARB requires that the VIN be entered manually which is time consuming and easy to mistype. Using a 3rd party barcode reader app on your iOS device is an easy way to copy the VIN into the DAWN Inspector app.
Pre-Check Test
Many users want to know whether a vehicle will pass a CTC inspection prior to submitting to CARB. This provides more time than the 30-day requirement to repair a vehicle if the vehicle would fail a CTC submission. DAWN OBD Pre-Check™ is a separate app that works with our Mini Streamer. HEM Data’s server anticipates how CARB will analyze CTC data.
The Pre-Check app generates a report immediately after submitting the test. The report includes key CTC information including any diagnostic trouble codes (DTCs), the number of warm-ups, miles, hours driven since codes have been cleared, and the status of each monitor. If the vehicle fails, the report states why. Click here for an example report.
The price for DAWN OBD Pre-Check is $395 and is a bundled option with DAWN OBD Inspector for CTC. The pre-check app does require a login or an internet connection during the test.
Pricing Information
The DAWN OBD Inspector pricing is as follows:
- The Mini Streamer hardware purchase is $395 (one-time fee)
- The software license is $995 (one-time fee including first year)
- The yearly renewal is $500
Adapter Option
- Adapter Y cable to both the 9-pin J1939 and the 16-pin J1962 (OBD-II) (used on Volvo and Mack trucks and many medium-duty trucks). Price is $39.
Purchase
To purchase or receive answers to your question, send an email to sales@hemdata.com. Or call our office at 248 559-5607 x111.
The DAWN OBD Inspector is also adaptable to a variety of inspection applications. Click here for details.
