How does a non can communication system work?
How does a non can communication system work?
“Networking” is the process of modules sharing information through different communications protocols or “languages.” Protocols on conventional, non-CAN systems usually switch from zero volts to a specified voltage to create an on/off signal that makes up a communications protocol.
What to do if your MDI says no connection?
If your MDI Manager shows a connection with your MDI and says software is compatible with pc, it is OK. Reconnect the MDI device and load software again. Follow the correction connection procedure and settings: Once install and run the MDI manager, power up the MDI tester using the A/C 12-volt adapter.
What to do if there is no communication with a module?
If your scan tool indicates “no communication” with a specific module, then you must diagnose the reason for the non-communication. Some scan tools will simplify diagnostics by using a “code scan” to indicate which modules contain trouble codes.
How can I diagnose my internet connectivity problems?
How can I diagnose my internet connectivity problems? Diagnosing a failing Internet connection can be fairly complicated. There are a number of different factors involved in the chain between the software configuration, the firmware drivers, the hardware device, the network equipment, and finally the ISP uplink.
What to do if your OBDII says no communication?
Sometimes that communication error may occur if the ECU haven’t totally reset. (may take 50+ miles) I would drive it around and then hook a scan tool up to make sure there are no codes before taking it for re-inspection. If not, then recommend another scanner. I took my truck to the dealer and it passed the smog test.
What does it mean when your computer says no communication?
Often the “no communication” error has nothing to do with the connector. It is a product of the machine finding the correct protocol and communication parameters in order to communicate with the computer. Not unlike the old baud rate issues some of us old folks fought with computer telephone modems.
How to diagnose a Ford communication network problem?
To diagnose this network, you will need a high-impedance DVOM and a scanner. First, hook up the DVOM (positive lead) to Pin #7 into the back of the DLC connector, the ground lead attached to the chassis. Then, with the ignition switch OFF or ON, there should be NO voltage on the network.
Why does my GM MDI diagnostic tool say no connection?
When get the GM MDI OBD2 diagnostic tool connected with computer and plugged into car’s DLC OBD port, only two of the indicator light flashed while the other two are off. And then the GM MDI software system displayed “no connection” error message.
