Autel Maxiscan MS509

by Alen Lmh Internet & eBusiness 4 1) EGR System
2) O2 Sensors
3) Catalyst
4) Evaporative System
5) O2 Sensor Heater
6) Secondary air
7) Heated Catalyst
8) A/C system
2.5 OBD II Monitor Readiness Status
OBD II systems must indicate whether or not the vehicle’s PCM’s monitor system has completed testing on each component. Components that have been tested will be reported as “Ready”, or “Complete”, meaning they have been tested by the OBD II system. The purpose of recording readiness status is to allow inspectors to determine if the vehicle’s OBD II system has tested all the components and/or systems.
The powertrain control module (PCM) sets a monitor to “Ready” or “Complete” after an appropriate drive cycle has been performed. The drive cycle that enables a monitor and sets readiness codes to “Ready” varies for each individual monitor. Once a monitor is set as “Ready” 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” all of the time. If testing of a particular supported non-continuous monitor has not been completed, the monitor status will be reported as “Not Complete” or “Not Ready.”
In order for the OBD monitor system to become ready, the vehicle should be driven under a variety of normal operating conditions. These operating conditions may include a mix of highway driving and stop and go, city type driving, and at least one overnight-off period system ready, please consult your vehicle owner’s manual.
2.6 OBD II Definitions
Powertrain Control Module (PCM) -- OBD II terminology for the on-board computer that controls engine and drive train.
Malfunction Indicator Light (MIL) -- Malfunction Indicator Light (Service Engine Soon, Check Engine) is a term used for the light on the instrument panel. It is to alert the driver and/or the repair technician that there is a problem with one or more of vehicle's systems and may cause emissions to exceed federal standards. If the MIL illuminates with a steady light, it indicates that a problem has been detected and the vehicle should be serviced as soon as possible. Under certain conditions, the dashboard light will blink or flash. This indicates a severe problem and flashing is intended to discourage vehicle operation. The vehicle onboard diagnostic system can not turn the MIL off until necessary repairs are completed or the condition no longer exists.
DTC -- Diagnostic Trouble Codes (DTC) that identify 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. Some monitors 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” condition. The purpose of completing an OBD II drive cycle is to force the vehicle to run its onboard diagnostics. Some form of a drive cycle needs to be performed after DTCs have been erased from the PCM’s memory or after the battery has been disconnected. Running through a vehicle’s complete drive cycle will “set” the readiness monitors so that future faults can be detected. Drive cycles vary depending on the vehicle and the monitor that needs to be reset. For vehicle specific drive cycle, consult the vehicle’s Owner’s Manual.
Freeze Frame Data -- When an emissions related fault occurs, the OBD II system not only sets a code but also records a snapshot of the vehicle operating parameters to help in identifying the problem. This set of values is referred to as Freeze Frame Data and may include important engine parameters such as engine RPM, vehicle speed, air flow, engine load, fuel pressure, fuel trim value, engine coolant temperature, ignition timing advance, or closed loop status.
3. Using the Scan Tool
3.1 Tool Description

① LCD DISPLAY -- Indicates test results. Backlit, 128 x 64 pixel display with contrast adjustment.
② ENTER BUTTON -- Confirms a selection (or action) from a menu. Starts recording live data under manual trigger mode.
③ ESC BUTTON -- Cancels a selection (or action) from a menu or returns to the menu. It is also used to setup system, exit DTC Lookup screen, or stop data recording when pressed.
④ LEFT SCROLL BUTTON -- When look up DTC definitions, moves to previous character and views additional information on previous screens if DTC definition covers more than one screen; deselect all marked PID data when viewing or recording customized live data list; views previous frames of recorded data when playing back live data. It is also used to update DTC library when pressed.
⑤ RIGHT SCROLL BUTTON -- When look up DTC definitions, moves to next character and view additional information on next screens if DTC definition covers more than 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.
⑥ UP SCROLL BUTTON -- Moves up through menu and submenu items in menu mode. When more than one screen of data is retrieved, moves up through the current screen to the previous screens for additional data.
⑦ 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. It is also used as the language setup hotkey when pressed.
⑧ HELP BUTTON -- Provides help information when pressed.
⑨ POWER SWITCH -- Turns on/off the scan tool when powered by cell battery; resets the scanner when powered by vehicle battery.
⑩ OBD II CONNECTOR -- Connects the scan tool to the vehicle’s Data Link Connector (DLC).
⑪ RUBBER BOOT -- Protects the scan tool from drop, abrasion and etc.
3.2 Specifications
1) Display: Backlit, 128 x 64 pixel display with contrast adjustment
2) Operating Temperature: 0 to 60°C (32 to 140 F°)
3) Storage Temperature: -20 to 70°C (-4 to 158 F°)
4) External Power: 8.0 to 18.0 V power provided via vehicle battery
5) Internal Power: 9V cell battery
6) Dimensions:
Length Width Height
178 mm (7.00”) 95 mm (3.74”) 35 mm (1.38”)
7) NW: 0.70kg (1.54lb), GW: 1.0kg(2.20lb)
3.3 Accessories Included
1) User’s Manual -- Instructions on tool operations
2) CD -- Includes user’s manual, DTC lookup software, and etc.
3) OBD2 cable -- Provides power to tool and communicates between tool and vehicle
4) USB cable -- Used to upgrade the scan tool, and to print retrieved data.
5) Carry case -- A nylon case to store the scan tool when not in use.
6) Cell battery -- Supplies power to the scan tool when disconnected from vehicle DLC.
3.4 Navigation Characters
Characters used to help navigate the scan tool are:
1) “►” -- Indicates current selection.
2) “ ”-- A DOWN Arrow indicates additional information is available on next screens.
3) “ ”-- An UP Arrow indicates additional information is available on previous screens.
4) “$” -- Identifies the control module number from which data is retrieved.
5) “?” -- Indicates help information is available.
6) “G” -- Indicates graphic viewing is available.
7) “ ” -- Indicates battery volume.
3.5 Keyboard
No solvents such as alcohol are allowed to clean the keypad or display. Use a mild nonabrasive detergent and a soft cotton cloth. Do not soak the keypad as the keypad is not waterproof.
3.6 Power
Internal Battery Power
The scan tool has a 9V cell battery that provides power for off-car reviewing and analysis. Press the power key to turn on the scan tool. When the icon appears, replace the battery as instructed in “Battery Replacement” on paragraph 3.10.
• If the scan tool is stored for a long period of time, remove batteries to prevent battery leakage from damaging battery compartment.
External Power
External power of the scan tool is provided via the vehicle Data Link Connector (DLC). Just follow the steps below to turn on the scan tool:
1) Connect the OBD II Cable to scan tool.
2) Find DLC on vehicle.
• A plastic DLC cover may be found for some vehicles and you need to remove it before plugging the OBD2 cable.
Plug OBD II cable to the vehicle’s DLC.
3.7 DTC Lookup
The DTC Lookup function is used to search for definitions of DTCs stored in built-in DTC library.
1) From Main Menu, use UP/DOWN scroll button to select DTC Lookup and press ENTER button.
The number “x/x” to the right indicates total number of items under this menu and sequence of highlighted item.
The “?” to the right indicates help information available. Press HELP button to view help information for selected item.
2) From DTC Lookup menu, use LEFT/RIGHT button to move to the desired character, use UP/DOWN button to change selected digit/character and press ENTER button to confirm.
3) View the DTC definition on screen. When DTC definition covers more than one screen, use LEFT/RIHT button to view additional information on previous/next screens.
For manufacturer specific codes, you need to select a vehicle make on an additional screen to look for DTC definitions.
If definition could not be found (SAE or Manufacturer Specific), the scan tool displays “DTC definition not found! Please refer to vehicle service manual!”
4) To view next or previous DTC in the built-in DTC library, use UP/DOWN button.
5) To enter another DTC, press ESC button to return to previous screen.
6) To exit to Main Menu, press ESC button.
3.8 Product Setup
The scan tool allows you to make the following adjustments and settings:
1) Language: Selects the desired language.
2) Contrast adjustment: Adjusts the contrast of the LCD display.
3) Unit of measure: Sets the unit of measure to English or Metric.
4) Auto Power-Off: Sets automatic power-off limits.
5) Beep Set: Turns on/off beep.
6) Tool self-test: Checks if the LCD display and keyboard are working normally.
• Settings of the unit will remain until change to the existing settings is made.
To enter the setup menu mode
From the keyboard: Press ESC button to enter System Setup menu. Follow the instructions to make adjustments and settings as described in the following setup options.
From the Main Menu: Use the UP/DOWN scroll button to select System Setup, and press ENTER button. Follow the instructions to make adjustments and settings as described in the following setup options.
Language Setup
• English is the default language.
From System Setup menu, use UP/DOWN scroll button to select Language, and press ENTER button.
Use UP/DOWN scroll button to select the desired language and press ENTER button to save your selection and return to previous menu.
Contrast Adjustment
From System Setup menu, use UP/DOWN scroll button to select Contrast, and press ENTER button.
From Contrast menu, use UP/DOWN scroll button to increase or decrease contrast.
3) Press ENTER button to save your settings and return to previous menu.
Unit of Measurement
• Metric is the default measurement unit.
1) From System Setup menu, use UP/DOWN scroll button to select Unit of Measure and press ENTER button.
2) From Unit of Measure menu, use UP/DOWN scroll button to select the desired unit of measurement.
3) Press ENTER button to save your selection and return to previous menu.
Auto Power-off
• The minimum automatic power-off time is 1 minute, and the maximum is 20 minutes.
• The Auto Power-Off function can be available only when the
scanner is powered by cell battery.
1) From System Setup menu, use UP/DOWN scroll button to select Auto Power-Off and press ENTER button.
2) From Auto Power-off menu, use UP/DOWN scroll button to increase or decrease time.
3) Press ENTER button to save your setting and return to previous menu.
Beep Set
•The default setting is Beep On.
1) From System Setup menu, use UP/DOWN scroll button to select Beep Set and press ENTER
2) From Beep Set menu, use UP/DOWN scroll button to select Beep ON or Beep OFF to turn on/off the beep.
3) Press ENTER button to save your selection and return to previous menu.
Tool Self-test
The Tool Self-test function checks if the display and keyboard are working properly.
A. Display test
The Display Test function checks if the LCD display is working normally.
1) From System Setup menu, use UP/DOWN scroll button to select Tool Self-test, and press ENTER button.
2) Select Display Test from Tool Self-test menu and press ENTER button.
3) Press ENTER button again to start test. Look for missing spots in the solid black characters.
4) When completed, press ESC button to return.
B. Keyboard Test
The Keyboard Test function verifies if the keys are functioning properly.
1) Use UP/DOWN scroll button to select Keyboard Test from the Tool Self-test menu, and then press ENTER button.
2) Press any key to start test. When you press a key, the key name should be observed on the display. If the key name does not show up, then the key is not functioning properly.
�. If you press and hold the power switch, the key name does not show on the screen, but resets the scanner when powered by vehicle battery, or turns off the scanner when powered by cell battery. If it does not restart the scanner or power off the scanner, the key is not working properly.
3) Double press ESC to return to previous menu.
3.9 Tool Information
The Tool Information function allows viewing of some important information such as serial number and software version number of the scanner.
1) From Main Menu, use UP/DOWN scroll button to select Tool Information and press ENTER button.
2) View tool information on screen.
3.10 Battery Replacement
The scan tool requires a 9V cell battery to operate when disconnected from vehicle power. When the icon appears on the screen, replace the battery.
1) Locate the battery cover on the back of the scan tool.
2) Remove the battery cover screw and slide the battery cover off.
3) Remove discharged batteries and install a new 9V cell battery.
4) Reinstall battery cover by sliding battery cover on and installing screw.
3.11 Vehicle Coverage
The MaxiscanTM MS509 OBDII/EOBD Scanner is specially designed to work with all OBD II compliant vehicles, including those equipped with next-generation protocol -- Control Area Network (CAN). It is required by EPA that all 1996 and newer vehicles (cars and light trucks) sold in the United States must be OBD II compliant and this includes all Domestic, Asian and European vehicles.
A small number of 1994 and 1995 model year gasoline vehicles are OBD II compliant. To verify if a 1994 or 1995 vehicle is OBD II compliant, check the Vehicle Emissions Control Information (VECI) Label which is located under the hood or by the radiator of most vehicles. If the vehicle is OBD II compliant, the label will designate “OBD II Certified”. Additionally, Government regulations mandate that all OBD II compliant vehicles must have a “common” sixteen-pin Data Link Connector (DLC).
For your vehicle to be OBD II compliant it must have a 16-pin DLC (Data Link Connector) under the dash and the Vehicle Emission Control Information Label must state that the vehicle is OBD II compliant.
3.12 Product Troubleshooting
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:
Verify that the ignition is ON;
. Check if the scan tool’s OBD II connector is securely connected to the vehicle’s DLC;
. Verify that the vehicle is OBD2 compliant;
. Turn the ignition off and wait for about 10 seconds. Turn the
ignition back to on and continue the testing.
. Verify the control module is not defective.
Operating Error
If the scan tool freezes, then an exception occurs or the vehicle’s ECU (Engine Control Unit) is too slow to respond to requests. You need to do the following to reset the tool:
. Press and hold POWER button for at least 2 seconds to reset the scan tool.
. Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing.
Scan tool doesn’t power up
If the scan tool won’t power up or operates incorrectly in any other way, you need to do the following to check up:
. Check if the scan tool’s OBD II connector is securely connected to the vehicle’s DLC;
. Check if the DLC pins are bent or broken. Clean the DLC pins if necessary. . Check vehicle battery to make sure it is still good with at least 8.0 volts.
4. Review Data
The Review Data function allows viewing of data from last test recorded by the scan tool.
1) Use UP/DOWN scroll button to select Review Data from Main Menu, and press ENTER button
2) Use UP/DOWN scroll button to select the desired item from Review Data menu, and press ENTER button.

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