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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (Engine Control System & Fuel System - 4.6L - Introduction (2 Of 2)) >> Component Locator >> Engine Control Module Connector End Views >> Engine Control Module (ECM) C2

Engine Control Module (ECM) C2

WARNING: This page is about a different car, the 2007 Cadillac SRX. 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
GM1590592Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C2 Connector Parts Information

Connector Part Information 
  • OEM: 12582677
  • Service: 88988931
  • Description: 73-Way F Receptacle 0.64 2.8 Sealed (GY)
Terminal Part Information 
  • Pins: 73
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: A/5
  • Release Tool/Test Probe: 12094430/J-35616-35 (VT)
  • Pins: 1, 6-9, 17-24, 27, 29, 33-40, 42-44, 53-60, 62-64, 66-67
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 2-5, 11-16, 28, 30-32, 46-52, 69-72
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 2-3, 11-16, 28, 30-32, 46-52, 70-72 - J/J
  • Core/Insulation Crimp: Pins 4-5, 68-69 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) C2 Connector Terminal Identification

Pin Wire Color Circuit No. Function
1 PU 2121 IC 1 Control
2 TN/WH 3111 Low Reference (Bank 1 Sensor 1)
3 PU/WH 3110 Reference Voltage (Bank 1 Sensor 1)
4 PU 3120 HO2S High Signal (Bank 1 Sensor 2)
5 TN/WH 3121 HO2S Low Signal (Bank 1 Sensor 2)
6 L-BU 1876 Knock Sensor 2 Signal
7 GY 2303 Knock Sensor 2 Signal
8 D-BU 496 Knock Sensor [1] Signal
9 GY 1716 Knock Sensor [1] 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 PK/BK 6395 Cam Phaser #2 Control
15 TN/BK 6397 Cam Phaser #4 Control
16 D-BU/WH 878 Fuel Injector 8 Control
17 OG/WH 2122 IC 2 Control
18 L-BU/WH 2126 IC 6 Control
19 BN/WH 2130 Low Reference
20 PU 6267 Camshaft CAM X Ground
21 TN 6268 Camshaft CAM Y Ground
22 WH 6269 Camshaft CAM Z Ground
23 BN 6266 Camshaft CAM W Ground
24 BK 2755 Low Reference
25-26 - - Not Used
27 GY/BK 6272 Crankshaft 60X Sensor Low Reference
28 PK/BK 5290 Ignition 1 Voltage
29 TN 2752 Low Reference
30 BN/WH 6754 Cam Phaser X Return Low Reference
31 D-BU/WH 6756 Cam Phaser Z Return Low Reference
32 L-BU/BK 1746 Fuel Injector 3 Control
33 OG 2127 IC 7 Control
34 D-GN 2125 IC 5 Control
35 BN 2129 Low Reference
36 D-GN 6457 Camshaft CAM X Supply Voltage
37 OG 6260 Camshaft CAM Y Supply Voltage
38 PK 6261 Camshaft CAM Z Supply Voltage
39 D-BU 6259 Camshaft CAM W Supply Voltage
40 GY 2705 5-Volt Reference
41 - - Not Used
42 TN 2760 Low Reference
43 PU/WH 6270 Crankshaft 60X Sensor Voltage
44 GY 2701 5-Volt Reference
45 - - Not Used
46 BN 6753 Cam Phaser W Return Low Reference
47 D-BU 6755 Cam Phaser Y Return Low Reference
48 L-GN/BK 1745 Fuel Injector 2 Control
49 TN/WH 845 Fuel Injector 5 Control
50 WH/BK 6396 Cam Phaser 3 Control
51 GY/BK 6394 Cam Phaser Control
52 L-BU/BK 844 Fuel Injector 4 Control
53 L-BU 2123 IC 3 Control
54 D-GN/WH 2124 IC 4 Control
55 PU/WH 2128 IC 8 Control
56 D-GN/WH 6264 Camshaft CAM X Signal
57 OG/BK 6263 Camshaft CAM Y Signal
58 PK/BK 6262 Camshaft CAM Z Signal
59 D-BU/WH 6265 Camshaft CAM W Signal
60 TN/WH 331 Oil Pressure Sensor Signal
61 - - Not Used
62 TN 472 IAT Sensor Signal
63 WH/BK 6271 Crankshaft 60X 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 [- Bank 1 Sensor 1]
69 GY/WH 3122 HO2S Heater Low Control [- Bank 2 Sensor 1]
70 YE/BK 846 Fuel Injector 6 Control
71 OG/BK 877 Fuel Injector 7 Control
72 TN 1744 Fuel Injector 1 Control
73 BK 1550 Ground
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