Why is my OBD2 port not communicating?
If the cigarette lighter fuse is burned out, the vehicle will not communicate with the test equipment during the OBD inspection. The fuse is faulty if it is dark inside like the inside of a blown light bulb or if the electrical wires within the fuse are burnt apart and not connected.
Why won’t my scanner read my car?
The most common reason for getting no OBD code is simply a blown fuse. Even a fuse dedicated solely to the car’s computer diagnostics can blow for no apparent reason. Check your fuses to see if any have gone bad. Remember that your car or truck might have more than one fuse box.
Will any OBD2 scanner work on my car?
Choose an OBD2 Scanner If your car or truck was manufactured in 1996 or later, an OBD2 scanner is compatible. If the vehicle is older than 1996, an OBD1 scanner may work, but those are more specific to each model of car.
What to do if the OBD II scanner doesn’t communicate with?
With the Ignition on, the voltage on class 2 serial data pin should be 5V or fluctuating between 3.5V and 5.0V, If open, PCM cannot transmit data to the scan tool. Connect positive DMM lead to DLC Battery + terminal Connect negative DMM lead to battery ground terminal.
Where are the fuses for the OBD2 scanner?
If not please check the system fuses 17, and 15. Also check the ALDL for corrosion and clean up the terminals as needed. Here is a wiring diagram which pertains to most cars showing the power going to the ALDL connector. (below) If anyone reading this needs the wiring and the fuse ID to there car please send there request here.
Why is my OBD2 controller not linking up?
But identifying this is very difficult as a result of the data transferred between the two controllers. So, you will need to check the main ECU. Another way of identifying what the cause or the no linking could be is by testing pin to pin check with a wiring schematic while utilizing a voltmeter to inspect every single wire.
Why is my scanner not connecting to my cel?
(Additional user comment) If scanner cannot connect and CEL does not come on, the problem is most likely the ignition switch. helpful? I have checked all the fuses and they are all in good working order. The question is, which of the computers needs replacing? Thanks guys, you are great!