obd2 has power but won't connect

David Richard loves to spend time with his family. Your vehicle will employ several. In the illustration is an example of a Type A OBD2 pin connector (also sometimes referred to as the Data Link Connector, DLC). (11) OBD2 Port Doesnt Communicate, But Has Power YouTube Generally speaking, if your DLC and fuse are working properly, its most likely this one thats causing your OBD2 to stop communicating. The fault could also, of course, be a wiring issue between the suspected faulty controller and the network. It has its own different OBD system. In most cases, it can be a cabling problem, or the OBD2 itself isnt working. As if the fuse were a light bulb, the interior of the fuse will be black and unattachable if the power lines within the fuse have been burned apart and no longer connect. If you notice any of the following problems with your car, call your local dealership or service center and ask them to investigate. Cant connect to the ecm but the OBD2 port has power. OBD II scanner I got from Walmart wont connect, nor does the Bluetooth OBD II scanner that previously worked with the car. Let me know if you have any questions. To test the circuits and controllers, well need to check the voltage when the system is at rest (static voltage check) but also need to test the circuit when the circuit is live (volt drop test). I tested pin 16 and reads 12 v, also tested pin 4, end there is a good grounding. There are various chances of OBD2 being unable to connect with your car. Turn signal lights (10A). This, of course, is only possible if you have a good working wiring diagram. 1 - 5 of 5 Posts. The scangauge get's its power from the OBDII port. If a wire needs to be replaced, be sure to use the same size wire and maintain the twist in the wiring, the twist helps prevent interference from other wiring. But if it has power but refuses to connect, you may want to examine its connection to the rest of your system. A qualified technician, such as one of our YourMechanic experts, can . The OBD2 connector lets you access data from your car easily. Since the third-party tools and accessories can cause issues if not installed properly, you may also want to check the wiring of such accessories if you have them. In addition, one of the computers might be the problem. Checking these connections will make sure that the onboard diagnostic computers power and network wont be disturbed by those third-party installations. Examine the DLC terminals closely. Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. In most cases, these issues necessitate the expertise of a trained technician. Taking it to a service center is the next step if the problem persists despite your attempts. OBDII port bad? wont connect to scanner - failed emissions - NASIOC OBD II won't communicate - Ford F150 Forum a. Now, measuring resistance not at the DLC but instead at CAN In and CAN Out (at the disconnected controllers block connector) will identify which side of the circuit is at issue. If you still cant find the issue regarding the OBD2 port, you may want to contact your car dealer or your units service center for assistance. Tried to read OBD codes and code reader doesn't power up . However, if it has power but wont connect, you may want to check its connection to your entire system. They contaminate the CAN network with constant erratic voltage. In other words, your OBD2 Scanners for Pajero wont communicate with your car so theres no way it can function. There are various chances of OBD2 being unable to connect with your car.

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