There is an issue of an open or unwanted resistance in the Controller Area Network[CAN], or the wires that go to the Data Link Connector[DLC]. In the diagrams down below I have include both the Original Equipment Manufacturer[OEM] wiring diagrams and the wiring diagram for your vehicle's DLC. I have also included guides for finding opens, and unwanted resistance in an automotive electrical circuit by the way of Voltage Drop, the preferred method for finding unwanted resistance. I have also included a generic pinout diagram for your vehicle's DLC. All DLC's are universal and required by law to be exactly the same, so a pinout chart for one vehicle will be the same as any other. You will need to use a Digital Multi-meter [DMM] to go through these guides, so here is a link below explaining how to use one:
Please go through these guides and report back with what you find. Happy Holidays.
Images (Click to enlarge)
Friday, December 27th, 2019 AT 9:59 PM