This function allows users to perform steering angle sensor calibration, clear records and clear counter. The function options vary with the vehicles being tested.
1) From the function menu (Figure 5-10) use the UP/DOWN scroll button to select Utility and press the OK button. The scan tool displays function menu as below.
Steering Angle Adjust
1) Select Steering Angle Adjust from the utility function menu and press the OK button.
2) The tool will display a series of instructions. Follow the onscreen instructions step by step until the operation is completely finished. If the operation is finished successfully, the scan tool will display a confirmation message. Otherwise, it will display a message to remind user of a problem. After you exit the diagnosis program, please repair the problem immediately.
Records Clear
1)Select Records Clear from the utility function menu and press the OK button.
2)The scan tool will display a list of records.
3) Select Clr. Histroy to continue operation or ESC to exit. When the command is sent, the tool will display a message as below.
Counter Clear
1)Select Counter Clear from the utility function menu and press the OK button.
2)The MaxiDiag MD808 scanner will display a prerequisite message as below. Select Yes to continue or No to exit.
3）When the command is sent, the tool will display a message as below.
This function is used to adjust the injector rate for individual cylinders.
(1)Select Injection rate adjustment from the service functions menu (Figure 5-20) and press OK.
(2)The tool communicates with the vehicle and reads the fault codes memory. Follow the on-screen instructions to finish this procedure.
(3) Then the MaxiDiag MD808 PRO will display as below. Press the corresponding number button to enter new value for each cylinder.
The option keys at the bottom of the screen work as below.
[Edit 1] Edit Cylinder 1 injector code [Edit 2] Edit Cylinder 2 injector code [Edit 3] Edit Cylinder 3 injector code [Edit 4] Edit Cylinder 4 injector code [Back] Return to the previous menu [Restore] Retain the old value
[Edit 1] Edit Cylinder 1 injector code [Edit 2] Edit Cylinder 2 injector code [Edit 3] Edit Cylinder 3 injector code [Edit 4] Edit Cylinder 4 injector code [Back] Return to the previous menu [Restore] Retain the old value
A. Enter New Value for Cy Under
From the Injection Rate Adjustment menu {Figure 5-21), select one option and press OK. The screen displays as below. Input a new value for a cylinder injector.
From the Injection Rate Adjustment menu {Figure 5-21), select one option and press OK. The screen displays as below. Input a new value for a cylinder injector.
Refer to Starting Basic Inspection Quantity on page 38 for how to enter a new value with soft keyboard.
B. Restore the Old Value
Select [Restore] and OK to retain the old value.
Select [Back] and OK to return to the previous menu.
Select [Restore] and OK to retain the old value.
Select [Back] and OK to return to the previous menu.
MaxiDiag MD808 PRO Particle Filter Regeneration
This function is used to perform the particle filter regeneration.
(1) Select Particle filter regeneration from the service functions menu and press OK.\
(1) Select Particle filter regeneration from the service functions menu and press OK.\
(2) The tool communicates with the vehicle and reads the fault codes memory. Follow the on-screen instructions to check the prerequisites before particle filter regeneration, such as the fuel, the time and driving style.
(3) If every prerequisite is met, the md808 from obdii365.com will ask your confirmation to proceed as below. Select Request to begin a regeneration or End to end the service function and exit.
(4) A series of instruction screens appears for users to perform the particle filter regeneration step by step. Follow the onscreen instructions and press the OK button until the tool reads off the regeneration status as below.
(5) When the particle filter regeneration is complete, the tool will ask your confirmation to exit the display. Select Repeat to check the status again or End to end the service function and exit.
NOTE
In the case of a particle filter heavily loaded with soot, it can occur that the regeneration request is blocked again after a short time or is not released. In this case, it is required to regenerate the particle filter in a motorway or cross-country trip taking approx. 30 minutes at a speed that is as constant as possible. Subsequently, the service function “Particle filter regeneration” must be run again.
During the regeneration phase and with the engine running, it can also occur that the display for “Regeneration active” jumps to “Regeneration not active”. This behavior can be seen exclusively with the vehicle stationary with the engine.
Part 3: How to use DPF function of Autel MD808
The DPF function of Autel MD808 PRO allows you to carry out numerous functions on the Diesel Particulate Filter system without having to send your car to a main dealer. The tool will manage DPF regeneration, DPF component replacement teach-in and DPF teach-in after replacing the engine control unit.
ECM monitors driving style and selects a suitable time to employ regeneration. Cars driven a lot at idling speed and low load will attempt to regenerate earlier than cars driven more with high load and high speed. In order for regeneration to take place, a prolonged high exhaust temperature must be obtained.
In the event of the car being driving in such a way that regeneration is not possible, i.e. frequent short journeys, a diagnostic trouble code will eventually be registered, DPF light and “Check Engine” indicator come on. A service regeneration can be requested in the workshop, using the diagnostic tool.
Before carrying out a forced DPF regeneration using the tool, check the followina items:
1.The fuel light is not on
2.No DPF relevant faults stored in system.
3.The vehicle has the correct spec engine oil.
4.The oil for diesel is not contaminated.
1.The fuel light is not on
2.No DPF relevant faults stored in system.
3.The vehicle has the correct spec engine oil.
4.The oil for diesel is not contaminated.
IMPORTANT:
Before diagnosing a problem vehicle and attempting to perform an emergency regeneration, it is important to obtain a full diagnostic log and read out relevant measured value blocks.
Before diagnosing a problem vehicle and attempting to perform an emergency regeneration, it is important to obtain a full diagnostic log and read out relevant measured value blocks.
NOTE:
1.The DPF will not regenerate if the engine management light is on, or there is a faulty EGR valve.
2.The ECU must be re-adapted when replacing the DPF and when topping up the fuel additive Eolys.
3.If the vehicle needs to be driven in order to perform a DPF service, ALWAYS have a second person help you. One person should drive the vehicle while the other person observes the screen on the Professional diagnostic technician. Trying to drive and observe the Scan Tool at the same time is dangerous, and could cause a serious traffic accident.
1.The DPF will not regenerate if the engine management light is on, or there is a faulty EGR valve.
2.The ECU must be re-adapted when replacing the DPF and when topping up the fuel additive Eolys.
3.If the vehicle needs to be driven in order to perform a DPF service, ALWAYS have a second person help you. One person should drive the vehicle while the other person observes the screen on the Professional diagnostic technician. Trying to drive and observe the Scan Tool at the same time is dangerous, and could cause a serious traffic accident.
Take BMW as an example. Follow the steps below to do the tests.
Select DPF icon on the Service screen (Figure 5-1), choose BMW from the vehicle make screen and select the correct vehicle model to enter the function menu.
Select DPF icon on the Service screen (Figure 5-1), choose BMW from the vehicle make screen and select the correct vehicle model to enter the function menu.
DPF Diagnostics
Select Control Unites from the DPF functions screen to access the Function Menu.
Select Control Unites from the DPF functions screen to access the Function Menu.
Identification A
This function enables you to retrieve the DPF-related control information.
This function enables you to retrieve the DPF-related control information.
Press Saveto save the information for later review or press ESCto return to the previous menu.
Starting Basic Inspection Quantity
This function enables you to start fuel delivery matching.
(1)Select Starting Basic Inspection Quantity from the obdii365.com functions menu (Figure 5-20) and press OK.
(2)The tool communicates with the vehicle and reads the fault codes memory. Follow the on-screen instructions to finish this procedure.
(3)The tool will display a function list menu as below. Press the corresponding number button to perform the desired function.
[1] Enter New Value for Adjustment
From the Starting Basic Inspection Quantity menu (Figure 5-21), select [1] and press OK. The screen displays as below.
The three keys at the bottom of the screen work as below
[Finish]: After entering the value, use this key to save the value to the tool.
[Show]: Press this key to pop up a soft keyboard to facilitate your input.
[Esc]: Press this key to exit
[Finish]: After entering the value, use this key to save the value to the tool.
[Show]: Press this key to pop up a soft keyboard to facilitate your input.
[Esc]: Press this key to exit
The three keys at the bottom of the screen work as below:
[Finish]: When you finished the input, select this key to confirm your input. [Pre.]: Uses this button to move a space to the left.
[Backspace]: Uses this key to erase the previous digit or character when typing.
Press Yes to save the data and continue.
[Finish]: When you finished the input, select this key to confirm your input. [Pre.]: Uses this button to move a space to the left.
[Backspace]: Uses this key to erase the previous digit or character when typing.
Press Yes to save the data and continue.
NOTE:
The data you input should be in the reasonable range. If the input data is out of range, the tool will display a warning message “Permissible adjustment range exceeded.”
The data you input should be in the reasonable range. If the input data is out of range, the tool will display a warning message “Permissible adjustment range exceeded.”
[2]Reset Adjustment to 0
Once the [2] is pressed, the tool will automatically reset the value to zero.
Once the [2] is pressed, the tool will automatically reset the value to zero.
[3]/[4] Store Data and Exit
When the fuel delivery rate adjustment is completed, select [3] and OK to store the new value in the control units; or, select [4] and OK to retain the old value.
When the fuel delivery rate adjustment is completed, select [3] and OK to store the new value in the control units; or, select [4] and OK to retain the old value.
Injection Rate
This function is used to adjust the injection volume.
(1)Select Injection Rate from the service functions menu (Figure 5-20) and press OK.
(2)The tool communicates with the vehicle and reads the fault codes memory. Follow the on-screen instructions to finish this procedure.
(3)Then the tool will display as below. Press the corresponding number button to perform the desired function.
(1)Select Injection Rate from the service functions menu (Figure 5-20) and press OK.
(2)The tool communicates with the vehicle and reads the fault codes memory. Follow the on-screen instructions to finish this procedure.
(3)Then the tool will display as below. Press the corresponding number button to perform the desired function.
NOTE:
The data you input should be in the reasonable range. If the input data is out of range, the tool will display a warning message “Permissible adjustment range exceeded.”
[2]Reset Adjustment to 100%
Once the [2] is pressed, the tool will automatically reset the value to 100%.
Once the [2] is pressed, the tool will automatically reset the value to 100%.
[3]/[4] Store Data and Exit
When the injection volume adjustment is completed, select [3] and OK to store the new value in the control units; or, select [4] and OK to retain the old value.
When the injection volume adjustment is completed, select [3] and OK to store the new value in the control units; or, select [4] and OK to retain the old value.
Part 4: MaxiDiag MD808 PRO Particle Filter Test
It is advisable to carry out a series of particle filter tests as a result of constant DPF regeneration, such as checking oil level, oil change interval for diesel contamination, swirl flaps, backpressure sensors and particle filter soot remains.
(1) Select Particle filter test and press the OK button from the service functions menu.
(2) The tool communicates with the vehicle and reads the fault codes memory. If there is no relevant fault code stored in DDE, the screen displays as below. Select Cancel to exit this function.
(3) If there are DPF-related codes stored in DDE, the screen displays as below. Select OK to continue or Cancel to exit this function.
(4) The MD808 PRO shows a list of particle filter tests as below. Select the corresponding number button to perform the desired test.
[1] Visual Inspection of Engine Oil
a) Select [1] and OK button from the particle filter test menu (Figure 5-32).
b) Select No if you visually find nothing is wrong with your engine oil. The tool displays as below. Press OK to return to the previous menu.
c) Or, select Yes if you visually find the engine oil level or oil change interval has some problems. The tool displays as below. Press OK button to return to previous menu.
d) Or, select Test Selection to return to the previous menu.
[2] Visual Inspection of Particulate Filter
a) Select [2] and OK button from the particle filter test menu.
b) Select Yes if you visually find no soot on the inside of the exhaust tail pipes. Press OK button to return to previous menu.
c) Or, select No if you visually find soot on the inside of the exhaust tail pipes. The tool displays as below. Follow the on-screen instructions to carry out particle filter visual inspections. Then select the correct options according to the test results.
d) Or, select Test Selection to return to the previous menu.
[3] Function Check of Swirl Flaps
a) Select [3] and OK button from the particle filter test menu.
b)Select OK to activate swirl flaps and the next screen displays. Press OK button to end the activation and exit.
c) Or, select Cancel to return to the previous menu.
[4] Exhaust Backpressure Test
a) Select [4] and OK button from the particle filter test menu.
b) Press OK to proceed and or select Cancel to return to the previous menu.
c) Check the exhaust backpressure with engine running idle. The Autel Scanner will read off the actual backpressure value and compare with the upper limit. Select OK to continue the test or Cancel to return to the previous menu.
If the engine is not running at idle speed, the tool will display a warning message. Select OK to repeat the test or select Cancel to exit.
Check the exhaust backpressure with engine running at 2000 rpm. The tool will read off the actual backpressure value and compare with the upper limit. Select OK to continue the test or Cancel to return to previous menu.
If the engine is not running at 2000 rpm, the tool will display a warning message. Select OK to repeat the test or select Cancel to exit.
Check the exhaust backpressure with engine running at cut-off speed. The tool will read off the actual backpressure value and compare with the upper limit. Select OK to end the test or Cancel to return to previous menu.
If the engine is not running at cut-off speed, the tool will display a warning message. Select OK to repeat the test.
The tool will submit a summary report for your confirmation.
g) Select Yes if the actual values exceed the limits. The tool displays an instruction message as below. Press OK button to return to previous menu.
h) Or, select No if the actual values are within the limits, then then tool will return to the previous menu.
i) Or, select Test Selection to return to the previous menu.
[5] Actual/Target Value Check-Mass Air Flow Sensor
a) Select [5] and OK button from the particle filter test menu
b)Press OK to return to the previous screen.
