1. Introduction
The Fits ZR11S Professional OBD2 Scanner is an advanced automotive diagnostic tool designed to provide comprehensive system analysis for OBD2 compliant vehicles manufactured since 1996. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to help you effectively utilize the scanner's capabilities, including ABS and SRS diagnostics, live data monitoring, and battery testing.
2. What's in the Box
Upon opening the package, please verify that all components are present and undamaged:
- ZR11s OBD2 Code Reader
- User Manual (this document)
- OBD2 Connection Cable (integrated)
3. Setup and Initial Use
Follow these steps to set up and begin using your ZR11S OBD2 Scanner:
- Locate the OBD2 Port: The OBD2 diagnostic port is typically located under the dashboard on the driver's side of the vehicle. Refer to your vehicle's owner's manual if you cannot locate it.
- Connect the Scanner: With the vehicle's ignition off, firmly plug the ZR11S scanner's OBD2 connector into the vehicle's OBD2 port. Ensure a secure connection.
- Power On: Turn the vehicle's ignition to the "ON" position (do not start the engine). The scanner will automatically power on and display the main menu.
- Language Selection (if applicable): If prompted, select your preferred language using the navigation buttons.

Figure 3.1: The Fits ZR11S OBD2 Scanner in use, demonstrating its compact design and user interface. The device is connected via its OBD2 cable, and its screen displays menu options for vehicle diagnostics.
4. Operating the ZR11S Scanner
The ZR11S scanner features an intuitive interface for easy navigation and operation.
4.1. Menu Navigation
- Use the UP/DOWN arrow buttons to scroll through menu options.
- Press the ENTER button to select an option or confirm an action.
- Press the EXIT/BACK button to return to the previous screen or exit a function.
4.2. Key Diagnostic Functions
The ZR11S offers a range of diagnostic capabilities:
- Read/Clear DTCs (Diagnostic Trouble Codes): Access the "Read Codes" menu to view current, pending, and permanent trouble codes. Select "Clear Codes" to erase them after repairs are completed.
- Live Data Stream: Monitor real-time engine parameters and sensor readings. This function allows you to view data in numerical or graphical format, aiding in the diagnosis of intermittent issues.
- Freeze Frame Data: When an emission-related fault occurs, the OBD2 system records certain vehicle parameters at the moment the fault is detected. This "snapshot" data can be accessed to understand the conditions under which the fault occurred.
- ABS (Antilock Brake System) Diagnostics: Access specific menus to read and clear trouble codes related to the ABS system, helping to diagnose braking issues.
- SRS (Supplemental Restraint System) Diagnostics: Access specific menus to read and clear trouble codes related to the SRS (airbag) system, crucial for safety system integrity.
- Battery & Charging System Test: Perform a quick assessment of your vehicle's battery health, alternator output, and overall charging system functionality. This helps identify potential starting problems or electrical issues.
- I/M Readiness: Check the status of emission-related monitors to determine if the vehicle is ready for an emissions test.
5. Maintenance and Care
Proper maintenance ensures the longevity and optimal performance of your ZR11S scanner:
- Cleaning: Use a soft, damp cloth to clean the exterior of the scanner. Do not use abrasive cleaners or solvents. Ensure the device is dry before storage.
- Storage: Store the scanner in a cool, dry place, away from direct sunlight and extreme temperatures. Keep it in its original packaging or a protective case when not in use to prevent damage.
- Cable Care: Avoid bending or crimping the OBD2 cable excessively. Always grasp the connector, not the cable, when plugging or unplugging.
- Software Updates: Periodically check the manufacturer's website for available software updates. Updates may include new vehicle compatibility, bug fixes, or enhanced features. Follow the provided instructions for any update procedures.
6. Troubleshooting
If you encounter issues while using your ZR11S scanner, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Scanner does not power on. | Loose connection to OBD2 port; Vehicle ignition not in "ON" position; Vehicle battery low. | Ensure the OBD2 cable is firmly connected. Turn vehicle ignition to "ON". Check vehicle battery voltage. |
| "Link Error" or "Communication Error" message. | Vehicle not OBD2 compliant; Faulty connection; Vehicle's ECU is not responding. | Verify vehicle is OBD2 compliant (1996 or newer). Re-connect the cable. Try on another OBD2 compliant vehicle if possible. |
| Screen is blank or frozen. | Software glitch; Power interruption. | Disconnect the scanner from the vehicle, wait 10 seconds, then re-connect. If issue persists, check for software updates. |
| Incorrect data readings. | Sensor malfunction in vehicle; Software issue. | Verify vehicle sensors are functioning correctly. Ensure scanner software is up to date. |
7. Specifications
| Model | Fits ZR11s OBD2 Code Reader |
| Brand | Generic |
| Item Weight | 1.3 pounds |
| Display | 2.8-inch Color Display |
| Vehicle Compatibility | OBD2 compliant vehicles (1996 and newer, domestic, European, and Asian) |
| Functions | Read/Clear DTCs, Live Data, Freeze Frame, ABS/SRS Diagnostics, Battery Test, I/M Readiness |
8. Warranty and Support
For information regarding product warranty, technical support, or service, please refer to the documentation provided at the time of purchase or contact the seller directly. Keep your purchase receipt as proof of purchase for any warranty claims.





