Frequently Asked Questions on the HEMData Clean Truck Check and Pre-Check Solution

Here at Emissions Depot we have been distributing the HEM Data Clean Truck Check device and their Pre-Check solution for a while. Technicians love the simplicity of the device, and how there is no need for a laptop. Below are some commonly answered questions and some answers to them.

CTC Device

1. How does the CTC device work?
   A. This device is ideal for individuals who are on the go. All you need is the 9-pin streamer (dongle) and an iPad or iPhone. The test results are uploaded through the app, provided you have a cellular data plan or a Wi-Fi connection.
   
   
2. Can I carry it from one place to another?
   A. Yes, the device is portable. However, a cellular data plan or a Wi-Fi connection is required to perform the test.
   
   
3. Is this device CARB certified?
   A. Yes, this device is CARB certified and is compatible with the Clean Truck Check program.
   
   
4. Which model of vehicles can I use this CTC device with?
   A. The device works with diesel engine vehicles that are model year 2013 and newer, and hybrid or alternative fuel engines that are model year 2018 and newer. The data is acquired using the vehicle’s OBD system to determine whether the emission control systems are functioning properly.
   
   
5. Which software or app is required to run the test?
   A. The DAWN OBD Inspector™ app, available on the App Store. It is compatible only with iPad or iPhone.
   
   
6. What are the fees to download and install the app?
   A. The app can be downloaded free of charge here. 
   
   
7. How do I register or generate my ID?
   A. Interested personnel must complete a free online training session provided by CARB. Upon successful completion, an approved tester will receive a Tester ID that is valid for two years. A Tester ID is required to use the DAWN OBD Inspector™ app.
   
   
8. What are the subscription fees for the App?
   A. The annual license fee is $600.
   
   
9. Are the subscription fees included in the cost of the CTC device?
   A. Yes, the first year's subscription fee is included. After the first year, users must pay $600 per year to continue using the software.
   
   
10. Can I use it with an Android device?
    A. No, the app works only on iPad or iPhone.
    
    
11. What is the name of the app to test and check the report?
    A. DAWN OBD Inspector™
    
    
12. What comes with the CTC device?
    A. • CAN Mini Streamer™ hardware (dongle)
         • 1-year subscription to the DAWN OBD Inspector™ app     
         • 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)
    
    
13. What is the warranty of the CTC device?
    A. The product includes a 1-year warranty.
    
    
14. What is the return policy?
    A. Returns are accepted within 10 days of product delivery. After 10 days, a 15% handling and restocking fee will apply. Shipping costs are non-refundable.

CTC Pre-Check

1. Why is pre-check required?
   A. Pre-Check helps users determine if a vehicle will pass a CTC inspection before submitting to CARB. This allows more time than the 30-day window to perform necessary repairs if the vehicle is likely to fail.
   
   
2. How does pre-check work?
   A. The Pre-Check app generates a report immediately after a test is submitted. It includes important diagnostic information such as trouble codes (DTCs), number of warm-ups, miles and hours driven since codes were cleared, and the status of each monitor. If the vehicle fails, the report explains the reason.
   
   
3. Which software or app is required to do a pre-check?
   A. The DAWN OBD Pre-Check™ app, which is a separate app compatible with the Mini Streamer hardware. It connects to HEM Data’s server to simulate CARB’s CTC analysis.
   
   
4. How Pre-Check it is pre-check activated?
   A. After purchasing the CTC device, provide the barcode found on the Mini Streamer hardware to activate Pre-Check.
   
   
5. Can I purchase only pre-check?
   A. No. Pre-Check must be purchased alongside the HDCTCMOB device.