NexLink NL102 User Manual
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NexLink NL102 User Manual

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Disclaimer
All information, illustrations, and specifications contained in this manual are
based on the latest information available at the time of publication. The right is
reserved to make change at any time without notice.
Safety Precautions and Warnings
To prevent personal injury or damage to vehicles and/or the NL102, please
read this user's manual first carefully and observe the following safety
precautions at a minimum whenever working on a vehicle:
Always perform automotive testing in a safe environment.
Do not attempt to operate or observe the tool while driving a vehicle.
Operating or observing the tool will cause driver distraction and could
cause a fatal accident.
Wear safety eye protection that meets ANSI standards.
Keep clothing, hair, hands, tools, test equipment, etc. away from all moving
or hot engine parts.
Operate the vehicle in a well-ventilated work area: Exhaust gases are
poisonous.
Put blocks in front of the drive wheels and never leave the vehicle
unattended while running tests.
Use extreme caution when working around the ignition coil, distributor cap,
ignition wires and spark plugs. These components create hazardous
voltages when the engine is running.
Put the transmission in P (for A/T) or N (for M/T) and make sure the parking
brake is engaged.
Keep a fire extinguisher suitable for gasoline/chemical/ electrical fires
nearby.
Don't connect or disconnect any test equipment while the ignition is on or
the engine is running.
Keep the NL102 dry, clean, free from oil/water or grease. Use a mild
detergent on a clean cloth to clean the outside of the NL102, when
necessary.
NexLink NL102 User Manual
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Summary of Contents for NexLink NL102

  • Page 1 Don’t connect or disconnect any test equipment while the ignition is on or the engine is running.  Keep the NL102 dry, clean, free from oil/water or grease. Use a mild detergent on a clean cloth to clean the outside of the NL102, when necessary.

  • Page 2: Table Of Contents

    NexLink NL102 User Manual TABLE of CONTENTS 1. INTRODUCTION ................... 1 2. GENERAL INFORMATION ..............1 2.1 O (OBD) II ............1 OARD IAGNOSTICS 2.2 D (DTC ) ..........2 IAGNOSTIC ROUBLE ODES 2.2.1 OBDII DTC ................2 2.2.2 DTCs for J1587/J1708 and J1939 ..........3 2.3 J1708/J1587/J1939 .................

  • Page 3: Introduction

    NexLink NL102 User Manual 1. INTRODUCTION The NL102 is specially developed for heavy duty vehicles, which supports all 10 modes of OBDII test (EVAP, O2 Sensor, I/M Readiness, MIL Status, VIN Info, and On-board monitors testing etc.) for a complete diagnosis and enables users to read DTCs, clear DTCs and view the datastream with a live color graphing.

  • Page 4: Diagnostic Trouble Codes (Dtcs)

    NexLink NL102 User Manual 2.2 Diagnostic Trouble Codes (DTCs) Diagnostic Trouble Codes (DTC) are codes that are stored by the on-board computer diagnostic system in response to a problem found in the vehicle. These codes identify a particular problem area and are intended to provide you with a guide as to where a fault might be occurring within a vehicle.

  • Page 5: Dtcs For J1587/J1708 And J1939

    2.2.2 DTCs for J1587/J1708 and J1939 This section explains the basic elements of fault codes for J1587/J1708 and J1939 data bus protocols, how to view these codes on NL102, and what they mean. Each fault code on NL102 contain three distinct pieces of information, as described below.

  • Page 6: Obd Ii Definitions

    NexLink NL102 User Manual SAE J1708 makes up the physical and data link layers while SAE J1587 makes up the transport and application layers with respect to the OSI model. SAE J1587 is used in conjunction with SAE J1708 for automobile communication.
  • Page 7 NexLink NL102 User Manual repairs are completed or the condition no longer exists. DTC -- Diagnostic Trouble Codes (DTC) that identifies which section of the emission control system has malfunctioned. Enabling Criteria -- Also termed Enabling Conditions. They are the vehicle-specific events or conditions that must occur within the engine before the various monitors will set, or run.

  • Page 8: Product Descriptions

    NexLink NL102 User Manual 3. Product Descriptions 3.1 Outline Figure 3-1 Name Descriptions Connects the NL102 to the vehicle’s Data ① OBD II Cable Link Connector (DLC). ② LCD display Indicates test results. ③ ESC button Confirms a selection (or action) from menu list.

  • Page 9: Specifications

     USB cable -- Connect to a computer for upgrading online 3.4 Power supply The power of the NL102 is provided via the vehicle’s Data Link Connector (DLC). Follow the steps below to power it up: 1. Find DLC on heavy duty vehicle: The DLC is the connector where diagnostic code readers interface with the vehicle’s on-board computer and usually located in the driver’s cab.

  • Page 10: Battery Monitor

    NexLink NL102 User Manual 3.5 Battery Monitor The power of the NL101 supply by the vehicle’s battery, If using the tool too long time, the energy of battery will reduce and the voltage is down. The NL100 give two levels warning : ...

  • Page 11: Connections & General Operations

    NexLink NL102 User Manual 4. Connections & General Operations 4.1 Connections 1. Turn the ignition off. 2. Locate the heavy duty vehicle’s DLC. 3. Select the desired diagnostic adaptor according to your vehicle’s DLC. 4. Plug one end of 6pin or 9pin DLC diagnostic adaptor into the included OBD II 16 pin connector, and connect the other end to the heavy duty truck’s DLC.

  • Page 12: Dtc Lookup

    NexLink NL102 User Manual 4.2 DTC Lookup DTC Lookup function is used to search for definitions of DTCs stored in the DTC library and for code breaker information. 1. From Main Screen (Figure 4.1), use the [ ] / [ ] scroll button and [ ] / [ ] scroll button to select DTC Lookup and press the [OK] button.

  • Page 13: Diagnose

    NexLink NL102 User Manual 5. Diagnose In Figure 4-1, press [ ] to scan the protocols of heavy-duty trucks and OBDII vehicles, a screen similar to figure 5-1 will appear: Figure 5-1 If a vehicle equipped with OBDII is tested, the system will enter the function selection screen once scanning has finished successfully.
  • Page 14 NexLink NL102 User Manual Figure 5-3 For detailed operations, please refer to Chapter 5.1 “HD OBD Diagnosing”. If scanning failure occurs, the system will enter the screen as shown in Figure 5-4: Figure 5-4 In this case, follow the diagnosis flowchart shown as below to proceed:...

  • Page 15: Hd Obd Diagnosing

    NexLink NL102 User Manual Select “HD OBD” Select communication protocol Read DTC Select test system (Refer to Chapter 5.1.1) Clear DTC View All Items Select test function (Refer to Chapter 5.1.2) Live Data Select Items (Refer to Chapter 5.1.3) View Graphic Items Figure 5-5 5.1 HD OBD Diagnosing...
  • Page 16 NexLink NL102 User Manual Figure 5-6 5.1.1 Read DTC This option is used to read the current activated or historical activated trouble codes. Generally, there are three elements for one J1939 DTC (See Figure 5-7):  Suspect Parameter Number (SPN) – Indicates what function on the ECU has failed.

  • Page 17: Obdii Diagnosing

    NexLink NL102 User Manual Press [ ] / [ ] to view the next or previous trouble code; press [ESC] to exit and return to the function screen. 5.1.2 Clear DTC This option allows you to clear the existing or historic trouble codes.
  • Page 18 NexLink NL102 User Manual Figure 5-9 5.2.1 Read Codes This option is used to read the current, pending or permanent trouble codes. If the trouble code is found, the system will display the detailed description of the trouble code: Figure 5-10...
  • Page 19 NexLink NL102 User Manual 5.2.2 Erase Codes It is used to clear all existing trouble codes. Notes:  Before performing this function, make sure to retrieve and record the trouble codes.  After clearing, you should retrieve trouble codes once more or turn ignition on and retrieve codes again.
  • Page 20 The EVAP test function lets you initiate a leak test for the vehicle’s EVAP system. NL102 does not perform the leak test, but signals to vehicle’s on-board computer to initiate the test. Before using the system test function, refer to the vehicle’s service repair manual to determine the procedures necessary to stop...

  • Page 21: Faq

    Here we list some frequently asked questions and answers relating to NL102. Question: System halts when reading data stream. What is the reason? Answer: It may be caused by a slackened connector. Please turn off the NL102, firmly connect the connector, and switch on it again.
  • Page 22 NexLink NL102 User Manual only and this User’s Manual is subject to change without prior notice.

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