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 VIEWSS91 PARK BRAKE CONTROL SWITCH (J77)
2013 Cadillac CTS V, 2D Coupe, Automatic Trans
S91 Park Brake Control Switch (J77)
2013 Cadillac CTS V, 2D Coupe, Automatic TransSECTION S91 Park Brake Control Switch (J77)
Connector Part Information
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Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575868 | J-35616-64B (L-BU) | J-38125-12A | SHCM-A03T-P025 | 20 | J | J |
S91 Park Brake Control Switch (J77)
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | YE | 1492 | 12-Volt Reference | I | - |
| 2 | 0.5 | L-BU | 1134 | 12-Volt Reference | I | - |
| 3 | 0.5 | PU | 7684 | Park Brake Apply Signal | I | - |
| 4 | 0.5 | D-BU | 6108 | Low Reference | I | - |
| 5 | 0.5 | BN | 6107 | Low Reference | I | - |
| 6 | 0.5 | YE | 6817 | LED Backlight Dimming Control | I | - |
| 7 | 0.5 | PU | 7683 | Park Brake Release Signal | I | - |
| 8 | 0.5 | BK | 450 | 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.