AZ OBD2 Scanner
AZ OBD2 Scanner
Embedded Files
AZOBD2scanner app for Android requires Bluetooth OBD2 ELM327 to function. ELM327 needs to plug into OBD port in your vehicle and pair with your phone before AZOBD2scanner can access vehicle diagnostics.
There are many ELM327 devices available on the market but the ELM327 from KONNWEI seem to be good from our testing.
Not all sensors supported by vehicle ECUs manufactures. Therefore, some PIDs will not have data. You can look at Service 1, PID 0x01 (0x01 to 0x20) and PID 0x020 (0x21 to 0x40) and PID 0x040 (0x41 to 0x60) to see number of PIDs supported by your vehicle.
(sen.wikipedia.org/wiki/OBD-II_PIDs )
Buttons and their meaning.
All Sensors: Here you will find all common sensors that your vehicle supports with live data.
Trouble Code: On this screen, you will have the option to read DTC codes or to clear DTC codes.
Car Info: Information such as voltage, ELM adapter, VIN number, and all the PIDs that your vehicle supported from PID 0 to PID 64.
Read Mileage (odometer): If your vehicle supports this PID, then the mileage will display.
AT Command: The AT commands allow you to enter a PID and read the data that results on screen. For example, if you want to read data of RPM PID ($0C or 12 in decimal), you should enter 010C and then press SEND.
Charts: This is a sensor data chart. On this screen, you can Add/Delete a sensor on the list. To see the list, press on the “Add/Delete” button, and you can select any sensor to add to the chart. More information on the “Sensor Data Chart” screen.
I/M Readiness: This option lets you check your vehicle's READY STATE. More information on the “Check for I/M Readiness” screen.
Dashboard: On this screen, you will see the most important data of your vehicle, such as engine temperature, fuel pressure, and more.
Current Drive Cycle: This option checks for PID 0×41 (last drive cycle) to see the performance of various emissions-related systems. More detail on the “Check Last Drive Cycle” screen.
Please Note:
Please Note:
Not all cars support all Parameter Identifiers (PIDs), as vehicles only need to support a subset of the available PIDs within each OBD-II mode, and some PIDs are manufacturer-specific. Supported PIDs are GREEN with data on the list.
Not all cars support all Parameter Identifiers (PIDs), as vehicles only need to support a subset of the available PIDs within each OBD-II mode, and some PIDs are manufacturer-specific. Supported PIDs are GREEN with data on the list.
OBD-II Standard:
OBD-II Standard:
The OBD-II (On-Board Diagnostics II) standard requires vehicles to support a certain level of diagnostics, but it doesn't mandate that all PIDs be supported.
The OBD-II (On-Board Diagnostics II) standard requires vehicles to support a certain level of diagnostics, but it doesn't mandate that all PIDs be supported.
Querying Supported PIDs:
Querying Supported PIDs:
You can query a vehicle to determine which PIDs it supports by using the button <Car Info> on the main screen of this app. On the <Car Info>, it will show PID 1-00 (PIDs supported $01 - $20), PID 1-20 (PIDs supported $21 - $40), and PID 1-40 (PIDs supported $41 - $60).
You can query a vehicle to determine which PIDs it supports by using the button <Car Info> on the main screen of this app. On the <Car Info>, it will show PID 1-00 (PIDs supported $01 - $20), PID 1-20 (PIDs supported $21 - $40), and PID 1-40 (PIDs supported $41 - $60).
Display PID data on Meter:
Display PID data on Meter:
Long press the PID you want to display on the meter. The selected PID color will turn BLUE and a round meter will appear on screen. On this screen, long press on the meter, the DELETE and MOVE options will display, they allow you to delete or arrange the meter. When delete a meter, the PID’s text on the list will turn back to BLACK.
Long press the PID you want to display on the meter. The selected PID color will turn BLUE and a round meter will appear on screen. On this screen, long press on the meter, the DELETE and MOVE options will display, they allow you to delete or arrange the meter. When delete a meter, the PID’s text on the list will turn back to BLACK.
Long press on the meter, the DELETE and MOVE options will display, they allow you to delete or arrange the meter. When delete a meter, the PID’s text on the list will turn back to BLACK.
Long press on the meter, the DELETE and MOVE options will display, they allow you to delete or arrange the meter. When delete a meter, the PID’s text on the list will turn back to BLACK.
Any DTC of your vehicle will display on screen, scroll up/down the sreen to view.
Any DTC of your vehicle will display on screen, scroll up/down the sreen to view.
On this screen, you can READ or CLEAR the DTC. All DTCs will be clear at once.
Read car info:
Read car info:
This screen give you information such as syatem voltage, ELM version,car VIN number and all PIDs that supported by this vehicle.
AT Command Button
AT Command Button
To send an AT command to OBD2, you only need to enter 01xx1, where xx is a PID number. Refer to the OBD2 PID document for the PID number.
To send an AT command to OBD2, you only need to enter 01xx1, where xx is a PID number. Refer to the OBD2 PID document for the PID number.
For example:
For example:
To read RPM, enter 010C1 in the input window and press the “Send” button. The data result will display on the “Data Received From OBD” window. The data is in HEX numbers; you need to figure out the formula (refer to https://en.wikipedia.org/wiki/OBD-II_PIDs ) to convert to decimal numbers.
To read RPM, enter 010C1 in the input window and press the “Send” button. The data result will display on the “Data Received From OBD” window. The data is in HEX numbers; you need to figure out the formula (refer to https://en.wikipedia.org/wiki/OBD-II_PIDs ) to convert to decimal numbers.
Zooming:
Zooming:
You can increase/decrease the charting window by SLIDEing the point on the zooming bar from 4 to 90 points of charts.
You can increase/decrease the charting window by SLIDEing the point on the zooming bar from 4 to 90 points of charts.
Add/Delete chart:
Add/Delete chart:
Touch <Add/Delete> button to add/delete a chart; a list of sensors will display. There, you can LONG PRESS on the sensor to add/delete (the BLUE color indicates that sensor was selected). If it was BLUE, then it will be black for unselected. If it's black, then it will turn BLUE to indicate that the sensor is selected.
Touch <Add/Delete> button to add/delete a chart; a list of sensors will display. There, you can LONG PRESS on the sensor to add/delete (the BLUE color indicates that sensor was selected). If it was BLUE, then it will be black for unselected. If it's black, then it will turn BLUE to indicate that the sensor is selected.
Clear All:
Clear All:
<Clear All> button will clear all charts.
<Clear All> button will clear all charts.
Done:
Done:
touch <Done> button will bring you back to the main screen.
touch <Done> button will bring you back to the main screen.
Read Charting Data:
Read Charting Data:
Data can be read on the charting window by TOUCHING anywhere on the charting window.
Data can be read on the charting window by TOUCHING anywhere on the charting window.
It’s recommended that you should not CLEAR the Diagnostic Trouble Codes (DTCs) before or after your vehicle repair. The check engine light will turn itself off if the entire fault has been correctly fixed and the drive cycle. This way you know when your car is READY when the check engine light is off.
It’s recommended that you should not CLEAR the Diagnostic Trouble Codes (DTCs) before or after your vehicle repair. The check engine light will turn itself off if the entire fault has been correctly fixed and the drive cycle. This way you know when your car is READY when the check engine light is off.
If the repair needs to disconnect the battery, the DTCs will be cleared and the check engine light also turned off; then you will need to complete the drive cycle to turn the OBD monitors to the READY state.
If the repair needs to disconnect the battery, the DTCs will be cleared and the check engine light also turned off; then you will need to complete the drive cycle to turn the OBD monitors to the READY state.
Drive cycle:
Drive cycle:
After repair, drive the vehicle for two to three days, including in the city and on the highway. If there are no DTCs, the OBD monitors will be READY for the emission test, and the MIL lamp will be off.
After repair, drive the vehicle for two to three days, including in the city and on the highway. If there are no DTCs, the OBD monitors will be READY for the emission test, and the MIL lamp will be off.
To rearrange the meter:
To rearrange the meter:
Long press on selected meter until you hear a beep sound then release your finger. Touch the meter again to move move it to a new position.
Long press on selected meter until you hear a beep sound then release your finger. Touch the meter again to move move it to a new position.
To resize the meter:
To resize the meter:
Long press on selected meter until you hear a beep sound then click on <Larger> or <Smaller> button to change size. Touch any where on screen to finish.
Long press on selected meter until you hear a beep sound then click on <Larger> or <Smaller> button to change size. Touch any where on screen to finish.
DTC Message:
DTC Message:
Dashboard check with ECU for any Trouble Code continouly; it will display a *** Warning *** with number of DTC. To check for what DTC is causing the error, go to Main screen for <Trouble Codes> button. Press on this button to scan for DTC code.
Dashboard check with ECU for any Trouble Code continouly; it will display a *** Warning *** with number of DTC. To check for what DTC is causing the error, go to Main screen for <Trouble Codes> button. Press on this button to scan for DTC code.
Restore Button:
Restore Button:
This option is to restore positions and sizes to original.
This option is to restore positions and sizes to original.
If you need more information on other sensors. Go back to main screen and select <All Sensors> button, there you will see many sensor with more detail information.
If you need more information on other sensors. Go back to main screen and select <All Sensors> button, there you will see many sensor with more detail information.
Note:
Dashboard is monitoring conditions of the vehicle, if any DTC reported, dashboard will notify on screen with number of DTCs.
The PID 0x41 "last drive cycle" in OBD refers to the most recent driving conditions that the vehicle's computer has gone through, allowing it to monitor and assess the performance of various emissions-related systems, essentially recording the last time the car's engine experienced a full range of operating conditions needed to check if all emission systems are functioning properly; this information can be accessed using an OBD-II scanner to see if all the necessary "readiness monitors" have completed their checks and are ready for an emissions test.
The PID 0x41 "last drive cycle" in OBD refers to the most recent driving conditions that the vehicle's computer has gone through, allowing it to monitor and assess the performance of various emissions-related systems, essentially recording the last time the car's engine experienced a full range of operating conditions needed to check if all emission systems are functioning properly; this information can be accessed using an OBD-II scanner to see if all the necessary "readiness monitors" have completed their checks and are ready for an emissions test.
Key points about a "last drive cycle":
Key points about a "last drive cycle":
Purpose:
Purpose:
It determines whether the car's emissions system is operating within acceptable parameters by running various tests during different driving situations like acceleration, cruising, and idling.
It determines whether the car's emissions system is operating within acceptable parameters by running various tests during different driving situations like acceleration, cruising, and idling.
Accessing information:
Accessing information:
A mechanic or car owner can access the "last drive cycle" data using an OBD-II scanner plugged into the vehicle's diagnostic port, which will display the status of different readiness monitors.
A mechanic or car owner can access the "last drive cycle" data using an OBD-II scanner plugged into the vehicle's diagnostic port, which will display the status of different readiness monitors.
Importance of emissions tests:
Importance of emissions tests:
If you need to get your car inspected for emissions, completing a proper drive cycle is crucial, as the testing station will check the readiness monitor status to ensure all systems have been properly assessed.
If you need to get your car inspected for emissions, completing a proper drive cycle is crucial, as the testing station will check the readiness monitor status to ensure all systems have been properly assessed.
Factors affecting the drive cycle:
Factors affecting the drive cycle:
Driving conditions like speed, engine temperature, and time spent idling can influence whether a complete drive cycle is successfully completed.
Driving conditions like speed, engine temperature, and time spent idling can influence whether a complete drive cycle is successfully completed.
Page updated
Google Sites
Report abuse