As per
@Blckshdw ...
After you solve the primary problem of establishing that the Radio IS receiving 12 Volts DC and that you have a Good Solid Ground:
If you look at at the Diagram of the Class 2 Network Wiring for the entire Vehicle... observe the
very lower right hand section of the schematic to follow the ORG (Orange Wire) Circuit # 1044 connection leading from the Radio back to the centralized meeting point for ALL Class 2 Network Connections Point in the middle of the Diagram. The Class 2 Network is a "Single Wire" type of Network System that operates from 0-7 Volts DC ...with the ordinary "PWM" Pulse Width Modulation communications happening between 0-5 Volts DC:
View attachment 90043
These next attached images are of the
PCM Printouts for the Three Colored Connectors attached at the PCM (White-Blue-Nat), with explanations of there Binary Color Coding and each wire Pin-Out to the PCM from everywhere else in the system. It may be necessary to examine the harness connectors adjacent the PCM related to possible broken wire(s) controlling the Radio. Download and use those Multiple Wiring Diagrams to know where to look for the Wires Controlling the Radio ...and what Color (Single or Combination) to look for to search for any Damaged or Broken Wire to Pinout Connections:
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