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 (5 OF 7)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X3 (LSA)
2013 Cadillac CTS V, 2D Coupe, Automatic Trans
K20 Engine Control Module X3 (LSA)
2013 Cadillac CTS V, 2D Coupe, Automatic TransSECTION K20 Engine Control Module X3 (LSA)
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 | 13575575 | J-35616-64B (L-BU) | J-38125-213 | 33467-0005 | 23 | J | J |
| II | 13575811 | J-35616-64B (L-BU) | J-38125-213 | 33467-0003 | 23 | H | H |
| III | 13575575 | J-35616-64B (L-BU) | J-38125-213 | 33467-0005 | 23 | K | K |
| IV | Pending | J-35616-35 (VT) | J-38125-11A | 7116-4152-02 | 9 | A | 5 |
K20 Engine Control Module X3 (LSA)
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1-2 | - | - | - | Not Occupied | - | - |
| 3 | 0.5 | TN | 1667 | HO2S Low Signal - Bank 2 Sensor 1 | I | - |
| 4 | 0.5 | PU | 1666 | HO2S High Signal - Bank 2 Sensor 1 | I | - |
| 5 | 0.5 | PU | 1670 | HO2S High Signal - Bank 2 Sensor 2 | I | - |
| 6 | 0.5 | TN | 1671 | HO2S Low Signal - Bank 2 Sensor 2 | I | - |
| 7 | 0.5 | OG | 225 | Generator Turn On Signal | I | - |
| 8 | 0.5 | L-GN | 1652 | Reverse Lockout Solenoid Signal | I | MG9 |
| 9-12 | - | - | - | Not Occupied | - | - |
| 13 | 0.5 | GY | 587 | Skip Shift Signal | I | MG9 |
| 14 | 0.35 | L-BU | 7126 | Super Charger Vacuum Bypass Valve Control | II | - |
| 15 | 0.5 | L-GN | 3212 | HO2S Heater Low Control - Bank 2 Sensor 1 | I | - |
| 16 | 0.5 | PK | 2014 | Charge Air Cooler Coolant Pump Control | I | - |
| 17 | - | - | - | Not Occupied | - | - |
| 18 | 0.8 | BN | 1174 | Oil Level Switch Signal | I | - |
| 19-20 | - | - | - | Not Occupied | - | - |
| 21 | 0.5 | TN | 5514 | A/C Refrigerant Pressure Sensor Low Reference | I | - |
| 22 | 0.8 | OG/BK | 6014 | Barometric Pressure Sensor Low Reference | III | - |
| 23 | 0.8 | OG/BK | 469 | Manifold Absolute Pressure Sensor Low Reference | III | - |
| 24-26 | - | - | - | Not Occupied | - | - |
| 27 | 0.5 | OG/D-GN | 7360 | Manual Transmission Clutch Position Sensor Return | I | MG9 |
| 28 | - | - | - | Not Occupied | - | - |
| 29 | 0.5 | GY | 23 | Generator Field Duty Cycle Signal | I | - |
| 30-32 | - | - | - | Not Occupied | - | - |
| 33 | 0.5 | TN | 2501 | High Speed GMLAN Serial Data Bus- | I | - |
| 34 | 0.5 | TN | 470 | Sensor Low Reference | I | - |
| 35 | 0.8 | TN | 2761 | Coolant Temperature Sensor Low Reference | III | - |
| 36 | 0.8 | YE/BK | 6120 | Manifold Air Temperature Sensor Low Reference | III | - |
| 37 | 0.5 | GY | 2700 | A/C Pressure Sensor 5 Volt Reference | I | - |
| 38 | 0.8 | WH/BK | 2932 | Barometric Pressure Sensor (5) Volt Reference | III | - |
| 39 | 0.8 | GY | 2704 | Manifold Absolute Pressure Sensor 5 Volt Reference | III | - |
| 40-42 | - | - | - | Not Occupied | - | - |
| 43 | 0.5 | D-BU/YE | 7361 | Manual Transmission Clutch Position Sensor Supply | I | MG9 |
| 44 | - | - | - | Not Occupied | - | - |
| 45 | 0.35 | L-GN | 5007 | Backup Lamp Switch Signal | II | MG9 |
| 46 | 0.5 | OG/BK | 1786 | Ignition Lock Cylinder Control Actuator Signal | I | MYD |
| 47 | - | - | - | Not Occupied | - | - |
| 48 | 0.5 | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control | I | - |
| 49 | 0.5 | D-GN | 335 | Low Speed Cooling Fan Relay Control | I | - |
| 50 | 0.5 | OG/WH | 3223 | HO2S Heater Low Control - Bank 2 Sensor 2 | I | - |
| 51-52 | - | - | - | Not Occupied | - | - |
| 53 | 0.5 | TN/BK | 2500 | High Speed GMLAN Serial Data Bus+ | I | - |
| 54 | - | - | - | Not Occupied | - | - |
| 55 | 0.8 | YE | 410 | Engine Coolant Temperature Sensor Signal | III | - |
| 56 | 0.8 | L-BU | 6118 | Manifold Air Temperature Sensor Signal | III | - |
| 57 | 0.5 | OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal | I | - |
| 58 | 0.8 | GY/BK | 433 | Barometric Pressure Sensor Signal | III | - |
| 59 | 0.8 | L-GN | 432 | Manifold Absolute Pressure Sensor Signal | III | - |
| 60-62 | - | - | - | Not Occupied | - | - |
| 63 | 0.5 | L-GN | 6338 | Manual Transmission Clutch Position Sensor Signal Position | I | MG9 |
| 64-65 | - | - | - | Not Occupied | - | - |
| 66 | 0.35 | YE | 400 | Vehicle Speed Sensor Signal | II | - |
| 67 | 0.35 | PU | 401 | Vehicle Speed Sensor Low Reference | II | - |
| 68-72 | - | - | - | Not Occupied | - | - |
| 73 | 3.0 | BK | 1550 | Ground | IV | - |
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.