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 MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - K20 TO K36 (X1)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X2 (LLU)
2013 Buick Regal Turbo Premium, Standard Trans
K20 Engine Control Module X2 (LLU)
2013 Buick Regal Turbo Premium, Standard TransSECTION K20 Engine Control Module X2 (LLU)
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool |
|---|---|---|---|
| I | Not Available | J-35616-35 (VT) | J-38125-561 |
| II | Not Available | J-35616-35 (VT) | J-38125-561 |
| III | Not Available | J-35616-14 (GN) | J-38125-557 |
| IV | 1928492556 | - | - |
| V | 1928492555 | Not Available | Not Available |
K20 Engine Control Module X2 (LLU)
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 1.5 | BK | 150 | Ground | I | - |
| 2 | 1.5 | BK | 150 | Ground | I | - |
| 3 | 1.5 | RD/BU | 5291 | Powertrain Main Relay Fused Supply (3) | I | - |
| 4 | 1.5 | BK | 150 | Ground | I | - |
| 5 | 1.5 | RD/BU | 5291 | Powertrain Main Relay Fused Supply (3) | I | - |
| 6 | 0.75 | VT/BU | 139 | Ignition Voltage | II | - |
| 7 | 0.5 | BK/WH | 151 | Signal Ground | III | - |
| 8-10 | - | - | - | Not Occupied | - | - |
| 11 | 0.5 | WH/GY | 459 | A/C Compressor Clutch Relay Control | IV | - |
| 12 | 0.5 | BN/YE | 473 | High Speed Cooling Fan Relay Control | IV | - |
| 13 | - | - | - | Not Occupied | - | - |
| 14 | 0.5 | GN/VT | 335 | Low Speed Cooling Fan Relay Control | IV | - |
| 15-26 | - | - | - | Not Occupied | - | - |
| 27 | 0.5 | BN/RD | 1274 | Accelerator Pedal Position 5 Volt Reference (2) | IV | - |
| 28 | 0.5 | BN/RD | 2700 | A/C Pressure Sensor 5 Volt Reference | IV | - |
| 29 | 0.5 | BK/VT | 1272 | Accelerator Pedal Position Low Reference (2) | III | - |
| 30 | 0.5 | BK/BN | 1271 | Accelerator Pedal Position Low Reference (1) | IV | - |
| 31 | 0.5 | VT/RD | 447 | Starter Relay Coil Control | IV | - |
| 32 | - | - | - | Not Occupied | - | - |
| 33 | 0.5 | BU/WH | 225 | Generator Turn On Signal | V | - |
| 34 | 0.5 | BK/GY | 6110 | Clutch Apply Sensor Low Reference (LLU/LDE/2H0) MR5 | IV | - |
| 35-48 | - | - | - | Not Occupied | - | - |
| 49 | 0.5 | BN/RD | 1164 | Accelerator Pedal Position 5 Volt Reference (1) | IV | - |
| 50 | 0.5 | GY/RD | 6109 | Clutch Apply Sensor Voltage Reference | IV | MR5 |
| 51-54 | - | - | - | Not Occupied | - | - |
| 55 | 0.5 | GN/WH | 1162 | Accelerator Pedal Position Signal (2) | IV | - |
| 56 | - | - | - | Not Occupied | - | - |
| 57 | 0.5 | GN | 380 | A/C Refrigerant Pressure Sensor Signal | IV | - |
| 58 | - | - | - | Not Occupied | - | - |
| 59 | 0.5 | YE | 6111 | Clutch Apply Sensor Signal | IV | MR5 |
| 60 | - | - | - | Not Occupied | - | - |
| 61 | 0.5 | GY | 23 | Generator Field Duty Cycle Signal | V | - |
| 62-65 | - | - | - | Not Occupied | - | - |
| 66 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) (1) | IV | - |
| 67 | 0.5 | L-BU | 2500 | High Speed GMLAN Serial Data (+) (1) | IV | - |
| 68 | 0.5 | GN/GY | 465 | Fuel Pump Primary Relay Control | IV | - |
| 69 | - | - | - | Not Occupied | - | - |
| 70 | 0.5 | RD/WH | 140 | Battery Positive Voltage | IV | - |
| 71 | - | - | - | Not Occupied | - | - |
| 72 | 0.5 | BN/WH | 5069 | Engine Main Relay Coil Control | IV | - |
| 73-75 | - | - | - | Not Occupied | - | - |
| 76 | 0.75 | L-BU | 5985 | Accessory Wakeup Serial Data | IV | - |
| 77-78 | - | - | - | Not Occupied | - | - |
| 79 | 0.5 | YE/WH | 1161 | Accelerator Pedal Position Signal (1) | IV | - |
| 80 | 0.5 | BU/GN | 1936 | Primary Fuel Level Sensor Signal | IV | - |
| 81 | - | - | - | Not Occupied | - | - |
| 82 | 0.5 | GN/WH | 5007 | Reverse Switch Signal | IV | MR5 |
| 83 | - | - | - | Not Occupied | - | - |
| 84 | 0.5 | WH/BU | 6311 | Cruise/ETC/TCC Brake Signal | IV | - |
| 85-94 | - | - | - | Not Occupied | - | - |
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.