Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCADILLAC2013CTS V, 2D COUPE, AUTOMATIC TRANSREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS (1 OF 7)COMPONENT CONNECTOR END VIEWSA20 RADIO/HVAC CONTROLS
2013 Cadillac CTS V, 2D Coupe, Automatic Trans
A20 Radio/HVAC Controls
2013 Cadillac CTS V, 2D Coupe, Automatic TransSECTION A20 Radio/HVAC Controls
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575845 | J-35616-64B (L-BU) | J-38125-215A | SAIT-A03T-M064 | 14 | P | P |
A20 Radio/HVAC Controls
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | TN | 1171 | Navigation Display Serial Data High | I | - |
| 2 | 0.5 | YE | 1219 | Navigation Display Serial Data Low | I | - |
| 3 | 0.35 | BARE | 813 | Drain Wire | I | - |
| 4 | 0.5 | PU/D-BU | 7311 | High Position Display Control Wake-Up Signal | I | - |
| 5-7 | - | - | - | Not Occupied | - | - |
| 8 | 0.5 | RD/WH | 1040 | Battery Positive Voltage | I | - |
| 9 | 0.35 | D-GN | 5060 | Low Speed GMLAN Serial Data | I | - |
| 10 | - | - | - | Not Occupied | - | - |
| 11 | 0.5 | L-GN | 1011 | Remote Radio Control Signal | I | - |
| 12-13 | - | - | - | Not Occupied | - | - |
| 14 | 0.35 | BN/WH | 1571 | Traction Control Switch Signal | I | - |
| 15 | 0.35 | TN | 2144 | Hazard Switch Signal | I | - |
| 16 | 0.5 | BK/WH | 851 | Ground | I | - |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.