A communication error occurs if the MaxiDiag MD808 PRO fails to communicate with the vehicle’s ECU (Electronic Control Unit). Please follow the instructions below to check up:
1. Verify that the ignition is ON.
2. Check if the scan tool’s connector is securely connected to the vehicle’s DLC.
3. Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing.
4. Verify the control module is not defective.
Operating Error
If the Car Diagnostic Tool freezes, then an exception occurs or the vehicle’s ECU (日ectronic Control Unit) is too slowto respond to requests. Please followthe steps below to reset the tool:
1. Reset the scan tool.
2. 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, please followthe instructions below to check up:
1. Check if the scan tool’s connector is securely connected to the vehicle’s DLC;
2. Check if the DLC pins are bent or broken.
3. Clean the DLC pins if necessary.
4. Check vehicle battery to make sure it is still good with at    least 8.0    volts.
Vehicle Coverage
On the basis of all OBD II compliant vehicles, including those equipped wth universal protocol – Control Area Network (CAN), Autel MD808/808 Pro Scanners expand vehicle system coverage and offer more diagnostic power to the vehicle technicians. Featuring expanded global vehicle coverage, the scan tools offer technicians a significant improvement on model years covered by supported manufactures.
For a complete listing of all the added vehicle coverage, download a copy of the official MaxiDiags MD808/808 Pro Software Release Note from www.autel.com.
Product Troubleshooting_
Vehicle Linking Error
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