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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1844 (Engine Controls And Fuel - 2.4L (Lat) - 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 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) C2 Connector End Views
GM1673472Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C2 Connector Parts Information

Connector Part Information 
  • OEM: 34566-0103
  • Service: 88988360
  • Description: 73-Way F GT 280 Series Micro 64 Sealed (BK)
Terminal Part Information 
  • Pins: 18, 19
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pins: 73
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-35 (VT)
  • Pins: 1, 8, 9, 14, 17, 20, 23, 30, 33, 35, 36, 39, 42, 46, 50, 53, 56, 59, 62, 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, 12, 13, 27, 29, 32, 43, 44, 48, 63, 64, 66, 68, 69, 71, 72,
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 2-5, 27, 29, 32, 43, 44, 48, 63, 64, 66, 68, 69, 71, 72: J/J
  • Core/Insulation Crimp: Pins 11-13: 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 HO2S Low Reference Bank 1 Sensor 1
3 PU/WH 3110 HO2S Reference Voltage Bank 1 Sensor 1
4 PU/WH 1668 HO2S High Signal-Bank 1 Sensor 1
5 TN/WH 1669 HO2S Low Signal-Bank 1 Sensor 2
6-7 - - Not Used
8 D-BU 496 Knock Sensor Signal
9 GY 1716 Knock Sensor Signal
10 - - Not Used
11 YE 581 TAC Motor Control (1)
12 BN 582 TAC Motor Control (2)
13 WH 5290 Ignition 1 Voltage
14 PK/BK 6395 CMP Actuator Solenoid Control Intake
15-16 - - Not Used
17 L-BU 2123 IC 3 Control
18-19 - - Not Used
20 GY 5296 Low Reference
21-22 - - Not Used
23 TN 5301 Low Reference
24-26 - - Not Used
27 PU 574 Low Reference
28 - - Not Used
29 BK 2752 Low Reference
30 L-GN 5282 Low Reference
31 - - Not Used
32 L-GN/BK 1745 Fuel Injector (2) Control
33 D-GN/WH 2124 IC 4 Control
34 - - Not Used
35 BN 2129 Low Reference
36 YE/BK 5297 5-Volt Reference - 1
37-38 - - Not Used
39 D-BU 5300 5-Volt Reference - 1
40-41 - - Not Used
42 BK 2760 Low Reference
43 L-GN 2867 5-Volt Reference - 2
44 GY 2701 5-Volt Reference - 2
45 - - Not Used
46 PU 5284 Low Reference
47 - - Not Used
48 PK/BK 1746 Fuel Injector (3) Control
49 - - Not Used
50 WH/BK 6396 CMP Actuator Solenoid Control Exhaust
51-52 - - Not Used
53 RD/WH 2122 IC 2 Control
54-55 - - Not Used
56 D-GN 5273 CMP Sensor Signal
57-58 - - Not Used
59 OG 5275 CMP Sensor Signal
60-61 - - Not Used
62 TN 472 IAT Sensor Signal
63 YE 573 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 BK/WH 3113 HO2S Heater Low Control-Bank 1 Sensor 1
69 BK/WH 3122 HO2S Heater Low Control-Bank 2 Sensor 1
70 - - Not Used
71 L-BU/BK 844 Fuel Injector (4) Control
72 BK 1744 Fuel Injector (1) Control
73 BK/WH 451 Ground
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