2004 Buick Century BaseFACTORY OEM SERVICE PROCEDURE

Engine Controls Connector End Views

Camshaft Position (CMP) Sensor Connector End View

GM833724Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15336065
  • 3-Way F GT 150 Series, Sealed (BLK)
Pin Wire Color Circuit No. Function
A BRN/WHT 633 CMP Sensor Signal
B BLK 407 Low Reference
C RED/WHT 812 12-Volt Reference
Crankshaft Position (CKP) Sensor A Connector End View

GM684807Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110293
  • 3-Way F Metri-Pack 150 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A LT GRN 1867 12-Volt Reference
B LT BLU/BLK 647 Medium Resolution Engine Speed Signal
C YEL/BLK 1868 Low Reference
Crankshaft Position (CKP) Sensor B Connector End View

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12192194
  • 2-Way F Metri-Pack 150.2 Pull-To-Seat Series, Sealed (BLK)
Pin Wire Color Circuit No. Function
A YEL 573 CKP Sensor Signal
B PPL 574 Low Reference
Engine Coolant Temperature (ECT) Sensor Connector End View

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162194
  • 2-Way F Metri-Pack 150.2 Series Pull To Seat, Sealed (BLK)
Pin Wire Color Circuit No. Function
A ORN/BLK 469 Low Reference
B YEL 410 ECT Sensor Signal
Evaporative Emission (EVAP) Canister Purge Solenoid Valve Connector End View

GM684795Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052643
  • 2-Way F Metri-Pack 150 Series Sealed (RED)
Pin Wire Color Circuit No. Function
A PNK 339 Ignition 1 Voltage
B DK GRN/WHT 428 EVAP Canister Purge Solenoid Valve Control
Evaporative Emission (EVAP) Canister Vent Solenoid Valve Connector End View

GM684795Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12052643
  • 2-Way F Metri-Pack 150 Series Sealed (RED)
Pin Wire Color Circuit No. Function
A PNK 339 Ignition 1 Voltage
B WHT 1310 EVAP Canister Vent Solenoid Valve Control
Exhaust Gas Recirculation (EGR) Valve Connector End View

GM594477Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15326389
  • 5-Way F GT 150 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A GRY 435 EGR Solenoid Low Control
B BLK 2753 Low Reference
C BRN 1456 EGR Valve Position Signal
D GRY/BLK 2702 5-Volt Reference
E WHT 257 EGR Solenoid High Control
Fuel Injector 1 Connector End View

GM833727Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15411634
  • 2-Way F Micro-Pack 064 Series Sealed (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 639 Ignition 1 Voltage
B BLK 1744 Fuel Injector 1 Control
Fuel Injector 2 Connector End View

GM833727Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15411634
  • 2-Way F Micro-Pack 064 Series Sealed (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 639 Ignition 1 Voltage
B LT GRN/BLK 1745 Fuel Injector 2 Control
Fuel Injector 3 Connector End View

GM833727Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15411634
  • 2-Way F Micro-Pack 064 Series Sealed (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 639 Ignition 1 Voltage
B PNK/BLK 1746 Fuel Injector 3 Control
Fuel Injector 4 Connector End View

GM833727Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15411634
  • 2-Way F Micro-Pack 064 Series Sealed (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 639 Ignition 1 Voltage
B LT BLU/BLK 844 Fuel Injector 4 Control
Fuel Injector 5 Connector End View

GM833727Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15411634
  • 2-Way F Micro-Pack 064 Series Sealed (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 639 Ignition 1 Voltage
B BLK/WHT 845 Fuel Injector 5 Control
Fuel Injector 6 Connector End View

GM833727Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15411634
  • 2-Way F Micro-Pack 064 Series Sealed (MD GRY)
Pin Wire Color Circuit No. Function
A PNK 639 Ignition 1 Voltage
B YEL/BLK 846 Fuel Injector 6 Control
Fuel Pump and Sender Assembly Connector End View

GM684908Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • Asm 15326631

    Connector 15326627

    PLR 15326628

    Seal 15326630

  • 4-Way F GT 280 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A BLK 150 Ground
B PPL 30 Fuel Level Sensor Signal
C BLK/WHT 651 Ground
D GRY 120 Fuel Pump Supply Voltage
Fuel Tank Pressure (FTP) Sensor Connector End View

GM516611Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12059595
  • 3-Way F Metri-Pack 150 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A ORN/BLK 469 Low Reference
B DK GRN 890 Fuel Tank Pressure Sensor Signal
C GRY/BLK 416 5-Volt Reference
Heated Oxygen Sensor (HO2S) 1 Connector End View

GM474210Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • Asm 12176897

    Connector 12176896

    Seal 12160481

  • 4-Way F Metri-Pack 150 Series Sealed (GRY)
Pin Wire Color Circuit No. Function
A DK GRN 676 Low Reference
B PPL 412 HO2S High Signal
C BLK/WHT 3113 HO2S Heater Low Control
D PNK 839 Ignition 1 Voltage
Heated Oxygen Sensor (HO2S) 2 Connector End View

GM280761Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12160825
  • 4-Way F Metri-Pack 150 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A TAN/WHT 1669 HO2S Low Signal
B PPL/WHT 1668 HO2S High Signal
C BLK 1050 Ground
D PNK 839 Ignition 1 Voltage
Idle Air Control (IAC) Valve Connector End View

GM38608Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162190
  • 4-Way F Metri-Pack 150.2 Series Pull to Seat (BLK)
Pin Wire Color Circuit No. Function
A LT GRN/BLK 444 IAC Coil B Low
B LT GRN/WHT 1749 IAC Coil B High
C LT BLU/BLK 1748 IAC Coil A Low
D LT BLU/WHT 1747 IAC Coil A High
Ignition Control Module (ICM) C1 Connector End View

GM697032Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162261
  • 6-Way F Metri-Pack 150.2 Series Pull to Seat (BLK)
Pin Wire Color Circuit No. Function
A TAN/BLK 424 IC Timing Signal
B WHT 423 IC Timing Control
C-D - - Not Used
E PPL/WHT 430 Low Resolution Engine Speed Signal
F RED/BLK 453 Low Reference
Ignition Control Module (ICM) C2 Connector End View

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162194
  • 2-Way F Metri-Pack 150.2 Series Pull to Seat (BLK)
Pin Wire Color Circuit No. Function
A BLK/WHT 51 Ground
B PNK 239 Ignition 1 Voltage
Ignition Control Module (ICM) C3 Connector End View

GM73223Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162184 Connector Assembly

    Connector 12162181

    Cable Seal 12092617

    Connector Seal 12047908

  • 3-Way F Metri-Pack 150.2 Series Pull-To-Seat (BLK)
Pin Wire Color Circuit No. Function
A YEL 573 CKP Sensor Signal
B - - Not Used
C PPL 574 Low Reference
Intake Air Temperature (IAT) Sensor Connector End View

GM646180Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162199
  • 2-Way F Metri-Pack 150.2 Series, Pull To Seat (GRY)
Pin Wire Color Circuit No. Function
A BLK 2760 Low Reference
B TAN 472 IAT Sensor Signal
Knock Sensor (KS) 1 Connector End View

GM95764Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12176800
  • 1-Way F Metri-Pack 150 Series Sealed (GRY)
Pin Wire Color Circuit No. Function
1 DK BLU 496 KS Signal
Manifold Absolute Pressure (MAP) Sensor Connector End View

GM622368Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12020403
  • 3-Way M Weather-Pack Tower Sealed (DK GRN)
Pin Wire Color Circuit No. Function
A ORN/BLK 469 Low Reference
B LT GRN 432 MAP Sensor Signal
C GRY 2704 5-Volt Reference
Mass Air Flow (MAF) Sensor Connector End View

GM516611Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12059595
  • 3-Way F Metri-Pack 150 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A YEL 492 MAF Sensor Signal
B BLK 451 Ground
C PNK 339 Ignition 1 Voltage
Throttle Position (TP) Sensor Connector End View

GM258299Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110192
  • 3-Way F Metri-Pack 150 Series Sealed (BLK)
Pin Wire Color Circuit No. Function
A GRY 2701 5-Volt Reference
B BLK 2752 Low Reference
C DK BLU 417 TP Sensor Signal
Factory Service Tools

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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.