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 (2 OF 7)COMPONENT CONNECTOR END VIEWSK26 HEADLAMP CONTROL MODULE (TR7 OR T4F)
2013 Cadillac CTS V, 2D Coupe, Automatic Trans
K26 Headlamp Control Module (TR7 or T4F)
2013 Cadillac CTS V, 2D Coupe, Automatic TransSECTION K26 Headlamp Control Module (TR7 or T4F)
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 | 13575406 | J-35616-4A (PU) | J-38125-553 | 15304719 | 19 | E | 5 |
| II | SEALED: 13576387 UNSEALED: 13578917 | J-35616-64B (L-BU) | J-38125-215A | SAITS-A03T-M064 | 14 | 9 | 9 |
| III | SEALED: 13576388 UNSEALED: 13578917 | J-35616-64B (L-BU) | J-38125-215A | SAITS-A03T-M064 | 14 | 9 | 9 |
K26 Headlamp Control Module (TR7 or T4F)
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1: 1 | 1: 0.5 | 1: RD/WH | 1: 2140 | 1: Battery Positive Voltage | 1: I | 1: T4F/TR7 |
| 2: 2 | 2: 0.35 | 2: OG/BK | 2: 5177 | 2: Left Headlamp Leveling Motor | 2: II | 2: TR7 |
| 3: 3 | 3: 0.35 | 3: YE/BK | 3: 5176 | 3: Left Headlamp Leveling Motor | 3: II | 3: TR7 |
| 4: 4 | 4: 0.35 | 4: PU/WH | 4: 5178 | 4: Left Headlamp Leveling Motor | 4: II | 4: TR7 |
| 5: 5 | 5: 0.35 | 5: BK | 5: 5752 | 5: Left Headlamp Leveling Motor Low Reference | 5: II | 5: T4F/TR7 |
| 6 | - | - | - | Not Occupied | - | - |
| 7: 7 | 7: 0.5 | 7: TN | 7: 2501 | 7: High Speed GMLAN Serial Data Bus- | 7: III | 7: T4F/TR7 |
| 8: 8 | 8: 0.5 | 8: TN/BK | 8: 2500 | 8: High Speed GMLAN Serial Data Bus+ | 8: III | 8: T4F/TR7 |
| 9 | - | - | - | Not Occupied | - | - |
| 10: 10 | 10: 0.35 | 10: BN/WH | 10: 5180 | 10: Right Headlamp Leveling Motor | 10: II | 10: TR7 |
| 11: 11 | 11: 0.35 | 11: OG/WH | 11: 5182 | 11: Right Headlamp Leveling Motor | 11: II | 11: TR7 |
| 12: 12 | 12: 0.35 | 12: GY/BK | 12: 5183 | 12: Right Headlamp Leveling Motor | 12: II | 12: TR7 |
| 13 | - | - | - | Not Occupied | - | - |
| 14: 14 | 14: 0.35 | 14: GY | 14: 5179 | 14: Left Headlamp Leveling Motor | 14: II | 14: TR7 |
| 15: 15 | 15: 0.35 | 15: D-GN | 15: 7131 | 15: Left Headlamp Adaptive Forward Lighting System Motor Signal 3 | 15: II | 15: T4F |
| 16: 16 | 16: 0.35 | 16: BN | 16: 7129 | 16: Left Headlamp Adaptive Forward Lighting System Motor Signal 1 | 16: II | 16: T4F |
| 17-18 | - | - | - | Not Occupied | - | - |
| 19: 19 | 19: 0.5 | 19: TN | 19: 2501 | 19: High Speed GMLAN Serial Data Bus- | 19: III | 19: T4F/TR7 |
| 20: 20 | 20: 0.5 | 20: TN/BK | 20: 2500 | 20: High Speed GMLAN Serial Data Bus+ | 20: III | 20: T4F/TR7 |
| 21 | - | - | - | Not Occupied | - | - |
| 22: 22 | 22: 0.35 | 22: OG | 22: 7133 | 22: Right Headlamp Adaptive Forward Lighting System Motor Signal 1 | 22: II | 22: T4F |
| 23: 23 | 23: 0.35 | 23: TN | 23: 7135 | 23: Right Headlamp Adaptive Forward Lighting System Motor Signal 3 | 23: II | 23: T4F |
| 24: 24 | 24: 0.35 | 24: PK/BK | 24: 5181 | 24: Right Headlamp Leveling Motor | 24: II | 24: TR7 |
| 25: 25 | 25: 0.5 | 25: BK | 25: 250 | 25: Ground | 25: I | 25: T4F/TR7 |
| 26: 26 | 26: 0.35 | 26: L-BU | 26: 7130 | 26: Left Headlamp Adaptive Forward Lighting System Motor Signal 2 | 26: II | 26: T4F |
| 27: 27 | 27: 0.35 | 27: GY | 27: 7132 | 27: Left Headlamp Adaptive Forward Lighting System Motor Signal 4 | 27: II | 27: T4F |
| 28: 28 | 28: 0.35 | 28: PU/WH | 28: 1211 | 28: Right Front Suspension Position Sensor Voltage Reference | 28: - | 28: TR7) (without F55 |
| 29: 29 | 29: 0.35 | 29: L-BU/BK | 29: 1212 | 29: Right Front Suspension Position Sensor Low Reference | 29: - | 29: TR7) (without F55 |
| 30: 30 | 30: 0.35 | 30: TN/WH | 30: 1213 | 30: Right Front Suspension Position Sensor Signal | 30: - | 30: TR7) (without F55 |
| 31: 31 | 31: 0.35 | 31: OG/BK | 31: 1208 | 31: Right Rear Suspension Position Sensor Signal | 31: - | 31: TR7) (without F55 |
| 32: 32 | 32: 0.35 | 32: L-GN/BK | 32: 1209 | 32: Right Rear Suspension Position Sensor Low Reference | 32: - | 32: TR7) (without F55 |
| 33: 33 | 33: 0.35 | 33: L-GN/WH | 33: 1210 | 33: Right Rear Suspension Position Sensor Voltage Reference | 33: - | 33: TR7) (without F55 |
| 34: 34 | 34:
0.5 34: .35 L-BU |
34:
L-BU 34: .35 L-BU |
34:
5986 34: 5986 |
34:
Serial Data Communication Enable 34: Serial Data Communication Enable |
34: II | 34:
T4F/TR7 without F55 34: T4F/TR7with F55 |
| 35: 35 | 35: 0.35 | 35: L-GN/BK | 35: 5753 | 35: Right Headlamp Leveling Motor Low Reference | 35: II | 35: T4F/TR7 |
| 36: 36 | 36: 0.35 | 36: PK | 36: 7134 | 36: Right Headlamp Adaptive Forward Lighting System Motor Signal 2 | 36: II | 36: T4F |
| 37: 37 | 37: 0.35 | 37: YE | 37: 7136 | 37: Right Headlamp Adaptive Forward Lighting System Motor Signal 4 | 37: II | 37: T4F |
| 38 | - | - | - | Not Occupied | - | - |
RENDER: 1.0x
NO RELATED
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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.