FOXWELL NT201

FOXWELL NT201 OBD2 Scanner Code Reader User Manual

Model: NT201

1. Introduction

The FOXWELL NT201 is an On-Board Diagnostics II (OBDII) and European On-Board Diagnostics (EOBD) scanner designed to diagnose engine-related issues in vehicles. This device allows users to read and clear diagnostic trouble codes (DTCs), view live data streams, perform I/M readiness tests, and more. This manual provides detailed instructions for the proper use and maintenance of your NT201 scanner and its accompanying portable carrying case.

2. Safety Information

Always observe safety precautions when working on a vehicle. Improper use of diagnostic tools can lead to personal injury or damage to the vehicle. Please read and follow these guidelines:

  • Ensure the vehicle is parked on a level surface with the parking brake engaged.
  • Wear appropriate eye protection.
  • Keep clothing, hair, hands, tools, and test equipment away from moving engine parts.
  • Operate the vehicle in a well-ventilated area to prevent carbon monoxide poisoning.
  • Do not connect or disconnect test equipment while the ignition is on or the engine is running.
  • Keep the scanner dry and clean. Avoid exposure to extreme temperatures.

3. Package Contents

Verify that all items are present in your package:

  • FOXWELL NT201 OBD2 Scanner Unit
  • Integrated OBDII Cable
  • Portable Carrying Case
  • User Manual (this document)

4. Product Overview

The NT201 scanner features a clear display and intuitive button layout for easy navigation and operation.

FOXWELL NT201 OBD2 Scanner front view showing screen and buttons

Figure 4.1: Front view of the FOXWELL NT201 OBD2 Scanner. This image displays the scanner's screen, which shows 'I/M Readiness' status indicators, and the control buttons including ESC, UP, DOWN, and ENTER, along with the I/M readiness hotkey.

4.1. Device Layout

  • LCD Display: Shows test results, menu options, and operational information.
  • ESC Button: Exits current screen or returns to the previous menu.
  • UP/DOWN Buttons: Navigates through menu options or data.
  • ENTER Button: Confirms a selection or enters a menu.
  • I/M Readiness Hotkey: Provides quick access to the I/M Readiness status.
  • OBDII Connector: Connects the scanner to the vehicle's Data Link Connector (DLC).

5. Setup

To begin using your NT201 scanner, follow these steps:

  1. Locate the vehicle's 16-pin Data Link Connector (DLC). This is typically located under the dashboard on the driver's side.
  2. Turn the vehicle's ignition to the 'ON' position (engine off).
  3. Plug the NT201's OBDII connector into the vehicle's DLC. The scanner will power on automatically.
  4. The scanner will perform a system check and display the main menu.

6. Operating Instructions

6.1. Read and Clear Fault Codes

This function allows you to retrieve Diagnostic Trouble Codes (DTCs) from the vehicle's engine control unit (ECU) and clear them after repairs.

FOXWELL NT201 scanner displaying diagnostic menu with 'Read Codes' selected

Figure 6.1: The FOXWELL NT201 scanner in use, displaying the diagnostic menu with 'Read Codes' highlighted. A vehicle dashboard is visible in the background, showing the check engine light illuminated.

  1. From the main menu, use the UP/DOWN buttons to select "Diagnostic Menu" and press ENTER.
  2. Select "Read Codes" to view current, pending, and permanent DTCs. The scanner will display the codes and their definitions.
  3. After addressing the underlying issue, select "Erase Codes" from the Diagnostic Menu and press ENTER. Confirm the action when prompted. This will turn off the Malfunction Indicator Lamp (MIL) or 'Check Engine Light'.

6.2. Live Data Stream

View real-time operational parameters of the vehicle's engine, such as engine RPM, vehicle speed, coolant temperature, and more.

FOXWELL NT201 scanner displaying live data stream with graphs

Figure 6.2: The FOXWELL NT201 scanner displaying a live data stream. The screen shows various parameters like Engine RPM and Vehicle Speed Sensor data, presented both numerically and graphically, with a car interior visible in the background.

  1. From the Diagnostic Menu, select "Live Data" and press ENTER.
  2. You can view data in text format or graphical format. Use the UP/DOWN buttons to scroll through parameters.
  3. Press ENTER to select a parameter for detailed viewing or graphing.

6.3. One-Key I/M Readiness Test

Quickly check the vehicle's emission readiness status to determine if it's ready for an emissions test.

FOXWELL NT201 scanner with I/M readiness hotkey highlighted

Figure 6.3: The FOXWELL NT201 scanner with its 'I/M' hotkey prominently displayed and highlighted, indicating its function for a quick smog check. An exhaust pipe is visible in the background, suggesting emissions testing.

  1. With the scanner connected and powered on, press the dedicated I/M hotkey.
  2. The scanner will display the status of various emission-related monitors (e.g., MIL, MIS, FUE, CCM, CAT, O2S, EGR).
  3. Green indicates the monitor has completed its test, Yellow indicates pending, and Red indicates not ready or a fault.

6.4. O2 Sensor Test

This function retrieves O2 sensor monitor test results for the most recently completed tests from the vehicle's on-board computer. This helps in diagnosing fuel efficiency and emission-related issues.

  1. From the Diagnostic Menu, select "O2 Sensor Test" and press ENTER.
  2. Follow the on-screen prompts to view the test results.

7. Maintenance

7.1. Cleaning the Scanner

Use a soft, damp cloth to clean the scanner's exterior. Do not use abrasive cleaners or solvents. Keep the screen free of dust and smudges for optimal visibility.

7.2. Storage

When not in use, store the NT201 scanner in its portable carrying case to protect it from dust, moisture, and physical damage. Store in a cool, dry place away from direct sunlight.

Open portable carrying case with FOXWELL NT201 scanner and accessories inside

Figure 7.1: An open portable carrying case designed for the FOXWELL NT201 scanner, showing the scanner and its cable neatly organized within the case's compartments. The case provides organized protection for the device.

Dimensions of the portable carrying case for FOXWELL scanners

Figure 7.2: A diagram illustrating the dimensions of the portable carrying case, showing its length, width, and height. This case is suitable for the FOXWELL NT201 and similar diagnostic tools.

8. Troubleshooting

If you encounter issues with your NT201 scanner, refer to the following common problems and solutions:

ProblemPossible CauseSolution
Scanner does not power on.Loose connection to DLC; Vehicle ignition not ON; Vehicle battery low.Ensure the OBDII cable is securely connected. Turn vehicle ignition to 'ON'. Check vehicle battery voltage.
Communication error with vehicle.Incorrect protocol; Faulty DLC; Vehicle not OBDII compliant.Verify vehicle is OBDII compliant (1996 or newer for most regions). Check DLC for damage. Try on another compliant vehicle.
Screen display is dim or unreadable.Environmental conditions; Screen damage.Move to a better lit area. If damaged, contact support.

9. Specifications

  • Display: Backlit LCD
  • Operating Temperature: 0 to 60°C (32 to 140°F)
  • Storage Temperature: -20 to 70°C (-4 to 158°F)
  • External Power: 8.0 to 18.0 V power provided via vehicle battery
  • Protocols Supported: KWP2000, J1850 VPW, ISO9141, J1850 PWM, CAN
  • Compatibility: Most 1996 and newer OBDII compliant vehicles (cars, light trucks, SUVs, minivans, hybrids). Does not support electric vehicles or 24V heavy-duty trucks.

10. Warranty and Support

For warranty information or technical support, please refer to the FOXWELL official website or contact their customer service directly. Keep your purchase receipt for warranty claims.

FOXWELL Official Website: www.foxwelltech.com