Autel Autolink AL539B Manual
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Autel Autolink AL539B Manual

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Table of Contents

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1.
SAFETY PRECAUTIONS AND WARNINGS ............................................ 1
2.
GENERAL INFORMATION ...................................................................... 2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3.
USING THE SCAN TOOL ........................................................................ 10
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
V
4.
REVIEW DATA......................................................................................... 30
5.
OBDII DIAGNOSTICS.............................................................................. 31
5.1
5.2
5.3
5.4
V
5.5

Table of Contents

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............................................................................................. 37
(OBD) II ........................................................... 2
) ...................................................... 2
................................................................. 4
...................................................... 5
................................................................. 7
......................................................................... 13
..................................................................... 13
................................................................ 28
.............................................................. 49
...................................................... 50
(DLC) ................................... 3

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  • Page 1: Table Of Contents

    Table of Contents SAFETY PRECAUTIONS AND WARNINGS ..........1 GENERAL INFORMATION ..............2 (OBD) II ............2 OARD IAGNOSTICS (DTC ) ............2 IAGNOSTIC ROUBLE ODES (DLC) ........3 OCATION OF THE ONNECTOR OBD II R ..............4 EADINESS ONITORS OBD II M ............
  • Page 2 O2 M ................. 56 ONITOR ..............58 OARD ONITOR .................. 61 OMPONENT ............63 IEWING EHICLE NFORMATION 5.10 M ................. 65 ODULES RESENT READY TEST .................... 66 ................. 66 ENERAL NFORMATION ..............67 EADY TEST APPLICATION ............69 NTERPRETATION CIRCUIT TEST FUNCTION ..............71 AUTO ...................

  • Page 3: Safety Precautions And Warnings

    1. Safety Precautions and Warnings To prevent personal injury or damage to vehicles and/or the scan tool, read this instruction manual first and observe the following safety precautions at a minimum whenever working on a vehicle:  Always perform automotive testing in a safe environment. ...

  • Page 4: General Information

    2. General Information 2.1 On-Board Diagnostics (OBD) II The first generation of On-Board Diagnostics (called OBD I) was developed by the California Air Resources Board (ARB) and implemented in 1988 to monitor some of the emission control components on vehicles. As technology evolved and the desire to improve the On-Board Diagnostic system increased, a new generation of On-Board Diagnostic system was developed.

  • Page 5: Location Of The Data Link Connector (Dlc)

    2.3 Location of the Data Link Connector (DLC) The DLC (Data Link Connector or Diagnostic Link Connector) is the standardized 16-cavity connector where diagnostic scan tools interface with the vehicle's on-board computer. The DLC is usually located 12 inches from the center of the instrument panel (dash), under or around the driver’s side for most vehicles.

  • Page 6: Obd Ii Readiness Monitors

    2.4 OBD II Readiness Monitors An important part of a vehicle’s OBD II system is the Readiness Monitors, which are indicators used to find out if all of the emissions components have been evaluated by the OBD II system. They are running periodic tests on specific systems and components to ensure that they are performing within allowable limits.

  • Page 7: Obd Ii Monitor Readiness Status

    monitors are termed non-continuous monitors. For different ignition type engines, the available monitors are different too. The following monitors are to be used for spark ignition engines only: EGR System O2 Sensors Catalyst Evaporative System O2 Sensor Heater Secondary Air Heated Catalyst The following monitors are to be used for compression ignition engines only:...

  • Page 8: Obd Ii Definitions

    or “Complete”, it will remain in this state. A number of factors, including erasing of diagnostic trouble codes (DTCs) with a scan tool or a disconnected battery, can result in Readiness Monitors being set to “Not Ready”. Since the three continuous monitors are constantly evaluating, they will be reported as “Ready”...

  • Page 9: Obd Ii Modes Of Operation

    require the vehicle to follow a prescribed “drive cycle” routine as part of the enabling criteria. Drive cycles vary among vehicles and for each monitor in any particular vehicle. OBD II Drive Cycle -- A specific mode of vehicle operation that provides conditions required to set all the readiness monitors applicable to the vehicle to the “ready”...
  • Page 10 Mode $02 – Displays Freeze Frame data. Same data as in mode 1, but it was captured and stored when a malfunction occurred and a DTC was set. Some of the PIDs for mode one are not implemented in this mode. Mode $03 –...
  • Page 11 performed to determine if repair has fixed a problem. This used by service technicians to verify repair was performed properly and after clearing diagnostic trouble codes. Mode $08 – This special Control Mode requests control of the on-board system, test, or component bi-directionally (where applicable).

  • Page 12: Using The Scan Tool

    3. Using the Scan Tool 3.1 Tool Description OBD II CONNECTOR – Connects the scan tool to the vehicle’s Data Link Connector (DLC). LCD DISPLAY – Indicates test results. GREEN LED – Indicates that engine systems are running normally (The number of monitors on the vehicle which are active and performing their diagnostic testing is in the allowed limit, and no DTCs are present).
  • Page 13 YELLOW LED – Indicates there is a possible problem. A “Pending” DTC is present and/or some of the vehicle’s emission monitors have not run their diagnostic testing. RED LED – Indicates there is a problem in one or more of the vehicle’s systems.

  • Page 14: Specifications

    one screen; selects/deselects PID data when viewing or recording customized live data list, and views next frames of data when playing back live data. DOWN SCROLL BUTTON – Moves down through menu and submenu items in menu mode. When more than one screen of data is retrieved, moves down through the current screen to next screens for additional data.

  • Page 15: Accessories Included

    3.3 Accessories Included User’s Manual -- Instructions on tool operations. CD -- Includes user’s manual, MaxiLink update software, and etc. OBD2 Cable -- Provides power to tool and communicates between tool and vehicle. USB Cable -- Used to upgrade the scan tool, and to print retrieved data.

  • Page 16: Power And Charge

    3.6 Power and Charge Power on Before using the scan tool, you must provide power to it. There are five methods for providing power to the scan tool.  Cable connection to vehicle.  AC/DC external power adapter.  Li-ion battery. ...
  • Page 17  Using a Power Adapter If you're using an external power adapter, connect the tool to the adapter. Then plug the adapter into a working electrical socket.  Using your computer If you want to charge the tool using your computer, make sure that your computer is turned on, it isn't sleeping (refer to the computer's manual to find out how to turn sleep off), and that the USB you connect the tool to provides power.

  • Page 18: Dtc Lookup

    the battery is charged, disconnect the tool. If you're using your computer to charge it, make sure that you disconnect your tool correctly when it's finished charging. 3.7 DTC Lookup The DTC Lookup function is used to search for definitions of DTCs stored in the DTC library and for code breaker information.

  • Page 19: System Setup

    3) View the DTC definition on screen. When DTC definition covers more than one screen, use the LEFT/RIGHT button or UP/DOWN button view additional information previous/next screens.  For manufacturer specific codes, you need to select a vehicle make on an additional screen to look for DTC definitions. ...
  • Page 20 Tool Information: Views the important information of the tool. Update Mode: Accesses the Update Mode.  Settings of the unit will remain until change to the existing settings is made. To enter the Setup menu From the Main Screen: Use the UP/DOWN scroll button and LEFT/RIGHT scroll button to select Setup, and press the OK button.
  • Page 21 English   Españ ol  Franç ais  Deutsch Figure 3.4 Configure Monitors From System Setup screen, use the UP/DOWN scroll button to select Configure Monitors, and press the OK button. (Figure 3.5) Configure Monitors Spark IGN Required Monitors Compression IGN Required Monitors Allowed INC Monitors Reset Factory Default...
  • Page 22 Spark IGN Required Monitors √ √ EVAP √ √ FUEL √ √ √ √ √ √ HCAT Compression IGN Required Monitors From Configure Monitors screen, use the UP/DOWN scroll button to select Compression IGN Required Monitors, and press the OK button.
  • Page 23 It will restore the default configuration settings in the Configure Monitors menu, and delete any customized settings. In this case, Spark IGN Required Monitors and Compression IGN Required Monitors will include all the available monitors, and the Allowed INC Monitors will be set to 1. The tool will display an information message to ask for your confirmation.
  • Page 24 From System Setup screen, use the UP/DOWN scroll button to select Key Beep Set and press the OK button. From Key Beep Set menu, use the UP/DOWN scroll button to select Beep ON or Beep OFF to turn on/off the beep. Key Beep Set Beep ON ...
  • Page 25 Status Beep Set Beep ON   Beep OFF Figure 3.8 Press the OK button to save your selection and return to previous menu. Tool Self-test The Tool Self-test function checks if the display, LED lamps and keyboard are working properly. A.
  • Page 26 Look for missing spots in the red, green, blue, black and white LCD display. When completed, press the ESC button to exit. Keyboard Test The Keyboard Test function verifies if the keys are functioning properly. Use the UP/DOWN scroll button to select Keyboard Test from the Tool Self-test menu, and then press the OK button.
  • Page 27 LED Test RED LED ON YELLOW LED ON GREEN LED ON Figure 3.11 When completed, press the ESC button to exit Tool Information The Tool Information function allows viewing of some important information such as serial number and software version number of the scanner.
  • Page 28 AL539/AL539b A PC or laptop with USB ports A USB cable Download the programs in our website www.autel.com to be updated to your computer. Run the Maxi Link II Tool Kit in your computer. (Figure 3.13) Connect the scan tool to your computer through the USB cable provided.

  • Page 29: Vehicle Coverage

    When the update has finished, the scan tool will display a message “Program Update has been done!” Restart the scan tool to finish the whole update. NOTE: Please select the bin file to update the operating system. After updating the bin file, please choose the aut file to update the DTC library.

  • Page 30: Product Troubleshooting

    3.10 Product Troubleshooting This part describes problems that you may encounter while using the scan tool. Vehicle Linking Error A communication error occurs if the scan tool fails to communicate with the vehicle’s ECU (Engine Control Unit). You need to do the following to check up: ...
  • Page 31 Run the LED Test in the System Setup menu. (see 3.8 System Setup). If the scan tool did not pass this test, there is a problem with the LED lamp. Please contact Autel Tech Support or your local selling agent.

  • Page 32: Review Data

    4. Review Data The Review Data function allows viewing of data from last test recorded by the scan tool. Use the UP/DOWN scroll button and LEFT/RIGHT scroll button to select Review Data from Main Screen, and press the OK button. (Figure 3.1) Use the UP/DOWN scroll button to select the desired item from Review Data menu, and press the OK button.

  • Page 33: Obdii Diagnostics

    5. OBDII Diagnostics When more than one vehicle control module is detected by the scan tool, you will be prompted to select the module where the data may be retrieved. The most often to be selected are the Power train Control Module [PCM] and Transmission Control Module [TCM].
  • Page 34 7） You will be prompted to erase previously stored data. （Figure 5.1）  Review previously stored data thoroughly before erasing. Diagnostic Erase previously stored data to save data from this test? Figure 5.1  If no data is stored in the scan tool, above prompt will not show up.

  • Page 35: Reading Codes

    Control Module Engine Module $A4 Figure 5.3  Use the UP/DOWN scroll button to select a module and press the OK button. 5.1 Reading Codes  Reading Codes can be done with the key on engine off (KOEO) or with the key on engine running (KOER). ...
  • Page 36 disconnecting power to ECU. 1) Use UP/DOWN scroll button to select Read Codes from Diagnostic Menu and press OK button. Diagnostic Menu 1/11 Read Codes Erase Codes Live Data View Freeze Frame I/M Readiness O2 Monitor Test Figure 5.4 2) Use the UP/DOWN scroll button to select Stored Codes or Pending Codes from the Read Codes menu and press the OK button.

  • Page 37: Erasing Codes

    P1633 BUICK Ignition 0 Switch Circuit Figure 5.6 If more than one DTC is found, use the LEFT/RIGHT scroll button to check all the codes.  If retrieved DTCs contain any manufacturer specific or enhanced codes, a “Manufacturer specific codes are found! Press any key to select vehicle make!”...
  • Page 38 enhanced data. Further, the I/M Readiness Monitor Status for all vehicle monitors is reset to Not Ready or Not Complete status. Do not erase the codes before the system has been checked completely by a technician. NOTE: Erasing codes does not mean that trouble codes in ECU have been eliminated completely.

  • Page 39: Live Data

    Erase Codes Erase Done! Press any key to con. Figure 5.9  If the codes are not cleared, then an “Erase Failure. Turn Key on with Engine off!” message appears. Erase Codes Erase Failure. Turn Key on with Engine Off! Press any key to con.
  • Page 40 2) Wait a few seconds while the scan tool validates the PID MAP. (Figure 5.11) Live Data Reading PID.01 - Please Wait - Figure 5.11 3) Use the UP/DOWN scroll button to select View Data from Live Data menu and press the OK button. ………………...
  • Page 41 …………………View Data 1/3. Complete Data Set Custom Data Set Unit of Measure Figure 5.13 View live PIDs on the screen. Use the UP/DOWN scroll button for more PIDs if additional information is available on more than one page. Live Data DTC_CNT FUELSYS1 FUELSYS2...
  • Page 42 Press the ESC button to return to previous menu. Viewing Custom Data Set To view customized PID data, use the UP/DOWN scroll button to select Custom Data Set from View Data menu and press the OK button. (Figure 5.13) Observe on-screen instructions. ……………Custom Data Set………...
  • Page 43  If you want to deselect all marked items or select all items, press the LEFT button. A message comes up to ask for your confirmation. ………………Deselect All…………………. Deselect all selected PID’s? Figure 5.18  If you decide to deselect these items, press OK; if you decide not to, press ESC or use the LEFT/RIGHT scroll button to select NO to continue PID selections.
  • Page 44 live data before trigger event and several frames after trigger event. There are two trigger modes used to record data: A. Manual Trigger - allows user to press the OK button to start recording. B. DTC Trigger - automatically records PID data when a fault that causes a DTC to set is detected by vehicle.
  • Page 45 …….……Pick Trigger Mode Manual Trigger DTC Trigger Figure 5.21  If data from previously tested vehicle is not erased, data from current test will be stored in a temporary cache. Use the UP/DOWN scroll button to select a memory location and press the OK button.
  • Page 46  If you wish to proceed with overwriting the old recording, press the OK button; if you do not wish to overwrite it, use the LEFT/RIGHT button to select NO or press the ESC button to pick another memory location. Observe on-screen instructions.
  • Page 47 …….Recording…. 5/46 ….. DTC_CNT FUELSYS1 FUELSYS2 -- ? LOAD_PCT(%) ETC(℃) SHRTFT1(%) 99.2 Figure 5.26  The number “x/x...” to the upper right corner of the screen indicates the maximum frames that can be recorded and the number of recorded frames. The scan tool keeps recording PID data until user presses the ESC button, selected memory location is full, or it completes recording.
  • Page 48 To record customized data, use the UP/DOWN scroll button to select Custom Data Set from Record Data menu and press the OK button. (Figure 5.20) Observe on-screen instructions. (Figure 5.16). Press the OK button to continue; press the ESC button, or use LEFT/RIGHT button to select NO and press the OK button to return to Record Data menu.
  • Page 49 the ESC button, or use the LEFT/RIGHT button to select NO and press OK to pick another memory location. Observe on-screen instructions.  If Manual Trigger is selected, following screen shows: (Figure 5.24)  If DTC Trigger is selected, following screen shows: (Figure 5.25) Wait for DTC to trigger recording or press OK to start recording.
  • Page 50 Select Memory Location #1 Location #2 Location #3 Figure 5.28  If there is no recording in selected location, a message “Not Supported or Stored No Data” displays on the screen. Use the UP/DOWN button to view recorded PIDs of each frame. 1 of 135 frame …...

  • Page 51: Viewing Freeze Frame Data

    5.4 Viewing Freeze Frame Data Freeze Frame Data allows the technician to view the vehicle’s operating parameters at the moment a DTC (Diagnostic Trouble Code) is detected. For example, the parameters may include engine speed (RPM), engine coolant temperature (ECT), or vehicle speed sensor (VSS) etc.

  • Page 52: Retrieving I/M Readiness Status

    ……………… ..FUELSYS1……… ……. Fuel System 1 Status Figure 5.32 Press ESC button to return to previous screen. 5.5 Retrieving I/M Readiness Status I/M Readiness function is used to check the operations of the Emission System on OBD2 compliant vehicles. It is an excellent function to use prior to having a vehicle inspected for compliance to a state emissions program.
  • Page 53  “OK” -- Indicates that a particular monitor being checked has completed its diagnostic testing.  “INC” -- Indicates that a particular monitor being checked has not completed its diagnostic testing.  “N/A” -- The monitor is not supported on that vehicle. There are two ways to retrieve I/M readiness status.
  • Page 54 The green, yellow and red LEDs provide a quick way to help you determine if a vehicle is ready for an Emission Test. The LED and audio tone indications are interpreted as below: LED Interpretation GREEN LED – Indicates that engine systems are “OK” and operating normally (the number of Monitors supported by the vehicle which have run and performed their self-diagnostic testing is in the allowed limit.
  • Page 55 RED LED – Indicates there is a problem with one or more of the vehicle’s system. A vehicle displaying a red LED is definitely not ready for an Emissions Test. The red LED is also an indication that there are DTCs present. The MIL lamp on the vehicle’s instrument panel will light steady.
  • Page 56 After you have read the information, press ESC to exit. The other buttons are disabled to prevent misoperation. B. Retrieve I/M Readiness status in typical way 1) Use the UP/DOWN scroll button to select I/M Readiness from Diagnostic Menu and press OK button. (Figure 5.4) 2) Wait a few seconds while the scan tool validates the PID MAP.
  • Page 57  HCAT -- Heated Catalyst Monitor For compression ignition engines:  MIS -- Misfire Monitor  FUEL -- Fuel System Monitor  CCM -- Comprehensive Component Monitor  EGR – EGR System Monitor  HCCAT -- NMHC Catalyst Monitor  NCAT -- NOx Aftertreatment Monitor ...

  • Page 58: O2 Monitor Test

    status will be activated as below. LED Light Audio Tone Beep Interval Green LED Two long beeps 2 minutes Yellow LED short, long, short beep 2 minutes Red LED Four short beeps 2 minutes Use the UP/DOWN scroll button for more PIDs if additional information is available on more than one page.
  • Page 59 Use the UP/DOWN scroll button to select O2 sensor from O2 Monitor Test menu and press OK button.....O2 Monitor Test 2/8… O2 Bank1 Sensor1 O2 Bank1 Sensor2 O2 Bank1 Sensor3 Figure 5.37  If the vehicle does not support the mode, an advisory message will be displayed on the screen.

  • Page 60: On-Board Monitor Test

    Use the UP/DOWN scroll button to view more screens of data if additional information is available in more than one page. Press the ESC button to return to the previous menu. 5.7 On-Board Monitor Test The On-Board Monitor Test is useful after servicing or after erasing a vehicle’s control module memory.
  • Page 61 Vehicle Manufacturer 1/28 BUICK CADILLAC CHRYSLER FORD Figure 5.40 After you select the vehicle manufacturer, the scan tool shows the On-Board Monitors test results for specific monitored systems. On-Board Mon. Test 1/19 HO2S Monitor HO2S Monitor Catalyst Monitor EVAP Monitor EVAP Monitor EVAP Monitor Figure 5.41...
  • Page 62 On-Board Mon. Test The selected mode is not supported Press any key to con.. Figure 5.42  For CAN-equipped vehicles, test selections can be as below: On-Board Mon. Test 1/31.. O2 Mon. B1S1 O2 Mon. B1S2 O2 Mon. B1S3 O2 Mon. B1S4 O2 Mon.

  • Page 63: Component Test

    NOTE: If the On-Board Monitor Test failed, this monitor item will be red color. Just by the text color you may easily find out which system is at fault. EVAP monitor Phase 0 Initial tank vacuum an.. Figure 5.45 Phase 0 Initial tank vacuum TEST(in H2O) 0000 MIN(in H2O)
  • Page 64 1) Use the UP/DOWN scroll button to select Component Test from Diagnostic Menu and press the OK button. (Figure 5.4) 2) Wait for the scan tool to display the Component Test menu. Component Test Evap Leak Test Figure 5.47 3) If the test has been initiated by the vehicle, a confirmation message will be displayed on the screen.

  • Page 65: Viewing Vehicle Information

    .....Component Test The selected mode is not supported Press any key to con. Figure 5.49 4) Wait a few seconds or press any key to return to previous screen. 5.9 Viewing Vehicle Information The Vehicle Info. function enables retrieval of Vehicle Identification (VIN), Calibration...
  • Page 66 Vehicle Info. Reading info… - Please Wait - Figure 5.51  If the vehicle does not support this mode, a message shows on the display warning that the mode is not supported. 4) From Vehicle Info. Menu, use the UP/DOWN scroll button to select an available item to view and press the OK button.

  • Page 67: Modules Present

    5.10 Modules Present The Modules Present function allows viewing of the module IDs and communication protocols for OBD2 modules in the vehicle. 1) Use the UP/DOWN scroll button to select Modules Present from Diagnostic Menu and press OK button. (Figure 5.4) 2) View modules present with their IDs and communication protocols.

  • Page 68: Ready Test

    6. Ready Test This function can be used as a convenient readiness test tool by automotive technicians to determine if the tested vehicle is ready for an emission test. By visual and audible indication, you will learn a vehicle’s monitors readiness. 6.1 General Information Repairs to the emissions-control systems of a 1996 or newer vehicle cause the vehicle’s computer (ECU) memory to be cleared.

  • Page 69: Ready Test Application

    6.2 Ready test application The purpose of this function is to indicate which of the vehicle’s monitors have run and completed their diagnosis and testing, and which ones have not yet run and completed testing and diagnosis of their designated sections of the vehicle’s emission system. All data shows on one screen, which provides a simple profile of vehicle at a glance, saving diagnosis time and improving technician productivity.
  • Page 70 Connect the scan tool to the vehicle’s DLC and erase the DTC(s) from the vehicle’s computer memory. (see 5.2 erasing codes) After the erase procedure is performed, status of most monitors will be changed. Leave the scan tool connected to the vehicle, and select Ready Test from Main Screen.

  • Page 71: Led And Tone Interpretation

    and completed the diagnostic testing. NEVER try to drive and operate the scan tool at the same time! NOTE: This function reads off the real time data of emission-related monitoring systems readiness status. Once the scan tool has finished other operations, for example, clearing trouble codes, the I/M Readiness Monitor Status program resets status of all the monitors to “INC”...
  • Page 72 “INC” -- Indicates that a particular monitor being checked has not completed its diagnostic testing. “N/A” -- The monitor is not supported on the vehicle. The LED and audio tone indications are interpreted as below: LED Interpretation The green and red LEDs provide an easy way to check if emission-related monitoring systems complete their self-diagnostic testing.

  • Page 73: Circuit Test Function

    7. Circuit Test Function This function is specially designed to diagnose the vehicle electrical system, including DC or AC voltage test, continuity test, and current test. NOTE: Circuit Test function is only available when the tool is powered by built-in 3.7V lithium battery solely. Otherwise, it will cause incorrect results and damage the tool.

  • Page 74: Ac Voltage

    Figure 7.1 7.3 AC Voltage While the tool in this mode, contact the probes to a circuit, then the LCD display will read the AC voltage with a resolution of 0.02 volt. Figure 7.2 NOTE: If the voltage is less than 3Volt, the result will display with a resolution of 0.01volt.

  • Page 75: Diodes

    Figure 7.3 NOTE: If the resistance of circuit is more than 50 ohm, the scan tool would display 0L as below. Figure 7.4 7.5 Diodes While the tool in this mode, contact the probes to a diode in the correct polarity: red to the positive (+) terminal and black to the negative (-) terminal, then the LCD display will read forward voltage drop of this diode.

  • Page 76: Current

    Figure 7.5 7.6 Current While the tool in this mode, contact the probes to a circuit, then the LCD display will read the current between these two probes. Current range of this mode is 0 ～20A. Figure 7.6 NOTE: If the current being tested is greater than 20A, it may blow the fuse inside the tool.
  • Page 77 Figure 7.7 NOTE: If the current tested is within 200mA, it is more precise to use the 200mA test mode to perform the test.

  • Page 78: Start Test

    8. Start Test 8.1 Starter Test The function of a vehicle's starting system is to rotate the engine's crankshaft fast enough so that combustion can take place, and the engine can begin to run under its own power. This system is commonly referred to as the "cranking system".
  • Page 79  Loosely mounted starter motor, series-parallel switch, magnetic switch, solenoid, starter relay, etc. Check state-of-charge of battery. For accurate cranking voltage test results, the battery must be at least 75 percent charged. Make sure the handbrake on and the gear is on N or P. STARTER TEST PROCEDURE There are two ways to do this test.
  • Page 80 Check that the ignition is on and engine stops. Then press OK button to continue. The scan tool will prompt you to start engine. Figure 8.2 Start engine and begin the test. There may be five test results. Table 1: Starter System Decisions and Recommendations Decision Action The starter voltage is normal and the starting...
  • Page 81 Decision Action The starter voltage is low and the battery is CHARGE BATTERY discharged. Fully charge the battery and retest the starter system. (Figure 8.6) If you didn’t start engine to continue the test, NO START the scan tool wait for two minutes and abort the test.
  • Page 82 Figure 8.7 Press OK button to do the test again. The scan tool will prompt you to shutdown the engine. Figure 8.8 Follow the steps above to do the test again.  If the scan tool doesn’t connect to vehicle or battery, it will display a message as below.

  • Page 83: Charging System Test

    8.2 Charging System Test All late-model vehicles need a constant supply of power to run their electronic components, such as computers, daytime running lights and stereo systems. Most 12-volt charging systems produce more than 12 volts, some as high as 14.5 volts of DC power. Many electronic ignitions will not operate efficiently using only 12 volts, and the engine will under-perform, reducing horsepower and gas mileage.
  • Page 84 Figure 8.10 Start the engine and keep it running at 2000 rpm for over 15 seconds. Then press OK button and the scan tool will show as below. Figure 8.11 Follow the instructions to hold the engine rpm and turn on high beams and blower motor.
  • Page 85 Decision Action There is a problem with the charging system. The alternator is not providing enough current to power the system’s electrical loads and charge the battery. (Figure 8.13)  Check the belts to ensure the alternator is LOW OUTPUT rotating with the engine running.
  • Page 86 Decision Action One or more diodes in the alternator aren’t functioning or there’s stator damage, which is shown by an excessive amount of AC ripple current supplied to the battery. (Figure 8.15)  EXCESSIVE RIPPLE Make sure the alternator mounting is sturdy and that the belts are in good shape and functioning properly.

  • Page 87: Battery Test - Only For Al539B

    9. Battery Test - Only for AL539b Comparing with the basic AL539, AL539b can perform one more function ---- battery test. This function provides quick and accurate load-free testing of most types batteries, including AGM, standard, maintenance-free batteries. NOTE: Do not connect the battery test cable to a voltage source greater than 30V.
  • Page 88 Use the UP/ DOWN scroll button to select BAT TEST from main menu, the screen will show as below (Figure 9.2). Figure 9.2 Press OK button to start test. The tool will display a list of battery types for selection. (Figure 9.3) Select the right type of battery and press OK button to continue.
  • Page 89 Figure 9.4 For example, select CCA in the list and press OK button to continue. Then the screen shows as Figure 9.5. Press the UP/ DOWN scroll button to increase or decrease rating units by 20 units and then press OK button to confirm. Figure 9.5 The scan tool will start the test and there may be three test results.
  • Page 90 Table 3: CCA Rating Test Decisions and Recommendations Decision Action The battery is normal and ready for service. GOOD BATTERY (Figure 9.5) Fully charge the battery and retest. Failure to fully charge the battery before testing may CHARGE BATTERY cause false readings. If charge battery appears again after you fully charge the battery, replace the battery.

  • Page 91: Print Data

    A USB cable Install Maxi-Link II applications through the included CD, or download the applications from our website: www.autel.com our distributors’ site. Connect the scanner to computer with the USB cable supplied. Run Maxi-Link II Tool Kit in your computer.
  • Page 92 Print Data Stored Codes Pending Codes Live Data Freeze Frame I/M Readiness O2 Sensor Test Print All Data Figure 10.2  To print all retrieved data, use the UP/DOWN scroll button to select Print All Data from Print Data menu. Press the OK button to upload data to the computer.

  • Page 93: Warranty And Service

    11.1 Limited One Year Warranty Autel warrants to its customers that this product will be free from all defects in materials and workmanship for a period of one (1) year from the date of the original purchase, subject to the following terms and...

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