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HOMESERVICE MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 839 (ENGINE CONTROLS AND FUEL - 5.3L - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROL MODULE CONNECTORSENGINE CONTROL MODULE (ECM) C2
2006 Pontiac G6 GTP, 2D Coupe, Standard

Engine Control Module (ECM) C2

2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Engine Control Module (ECM) C2
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) C2 Connector End View
GM1590596Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C2 Connector Parts Information

Connector Part Information 
  • OEM: 15499466
  • Service: See Catalog
  • Description: 73-Way F 0.64 2.8 Series, Sealed (BK)
Terminal Part Information 
  • Pins: 2 - 72
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Engine Control Module (ECM) C2 Connector Terminal Identification

Pin Wire Color Circuit No. Function
1 PU 2121 IC 1 Control
2 TN 1664 HO2S Low Signal Sensor 1
3 PU/WH 1665 HO2S High Signal Sensor 1
4 PU/WH 1668 HO2S High Signal Sensor 2
5 TN/WH 1669 HO2S Low Signal Sensor 2
6 L-BU 1876 Knock 2 Sensor Signal
7 GY 2303 Knock 2 Sensor Signal
8 D-BU 496 Knock 1 Sensor Signal
9 GY 1716 Knock 1 Sensor Signal
10 - - Not Used
11 YE 581 TAC Motor Control - 1
12 BN 582 TAC Motor Control - 2
13 PK/BK 5290 Ignition 1 Voltage
14-15 - - Not Used
16 PK/BK 1746 Fuel Injector 3 Control
17 PU/WH 2128 IC 8 Control
18 D-GN/WH 2124 IC 4 Control
19 BN/WH 2130 Low Reference
20-22 - - Not Used
23 PK/BK 632 Low Reference
24 BK 2755 Low Reference
25-26 - - Not Used
27 YE/BK 1868 Low Reference
28 - - Not Used
29 TN 2752 Low Reference
30-31 - - Not Used
32 L-GN/BK 1745 Fuel Injector 2 Control
33 OG 2127 IC 7 Control
34 D-GN 2125 IC 5 Control
35 BN 2129 Low Reference
36-38 - - Not Used
39 OG 631 12-Volt Reference
40 GY 2705 5-Volt Reference 1
41 - - Not Used
42 TN 2760 Low Reference
43 L-GN 1867 12-Volt Reference
44 GY 2701 5-Volt Reference 2
45-47 - - Not Used
48 D-BU/WH 878 Fuel Injector 8 Control
49 TN/WH 845 Fuel Injector 5 Control
50-51 - - Not Used
52 YE/BK 846 Fuel Injector 6 Control
53 OG/WH 2122 IC 2 Control
54 L-BU/WH 2126 IC 6 Control
55 L-BU 2123 IC 3 Control
56-58 - - Not Used
59 BN/WH 633 CMP Sensor Signal
60 TN/WH 331 Oil Pressure Sensor Signal
61 - - Not Used
62 TN/BK 472 IAT Sensor Signal
63 D-BU/WH 1869 CKP Sensor Signal
64 D-GN 485 TP Sensor 1 Signal
65 - - Not Used
66 PU 486 TP Sensor 2 Signal
67 YE 492 MAF Sensor Signal
68 GY/WH 3113 HO2S Heater Low Control Sensor 1
69 BN 2391 HO2S Heater Low Control Sensor 2
70 L-BU/BK 844 Fuel Injector 4 Control
71 OG/BK 877 Fuel Injector 7 Control
72 TN 1744 Fuel Injector 1 Control
73 BK/WH 451 Ground
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.