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Home >> Chevrolet >> 2007 >> HHR LS, Automatic >> Repair and Diagnosis >> Electrical >> Body Electrical >> OEM Connector End Views >> Engine Control Module Connector End Views (2.4L) >> Engine Control Module (ECM) Connector End View C2

Engine Control Module (ECM) Connector End View C2

Fig 1: Connector End View
GM1335545Courtesy of GENERAL MOTORS CORP.
Connector Part Information

Connector Part Information 
  • OEM: 34566-2503
  • Service: 88988931
  • Description: 73-Way F Micro-Pack 64 Series (BK)
Terminal Part Information 
  • Pins: 1-5, 8, 9, 11-14, 17, 20, 23, 27, 29, 30, 32, 33, 35, 36, 39, 42-44, 46, 48, 50, 53, 56, 59, 62-64, 66-69, 71, 72
  • 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)
Connector Terminal Identification

Pin Wire Color Circuit No. Function
1 PU 2121 Ignition Control (1)
2 TN/WH 3111 Heated Oxygen Sensor Low Signal Sensor 1
3 PU/WH 3110 Heated Oxygen Sensor High Signal Sensor 1
4 PU/WH 1668 Heated Oxygen Sensor High Signal Sensor 2
5 TN/WH 1669 Heated Oxygen Sensor Low Signal 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 PK/BK 5290 Ignition 1 Voltage
14 PK/BK 6395 CMP Actuator Solenoid Control Intake
15-16 - - Not Used
17 L-BU 2123 Ignition Control (3)
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 TN 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 Ignition Control (4)
34 - - Not Used
35 BN 2129 Low Reference
36 YE/BK 5297 5-Volt Reference
37-38 - - Not Used
39 D-BU 5300 5-Volt Reference
40-41 - - Not Used
42 TN 2760 Low Reference
43 L-GN 2867 5-Volt Reference
44 GY 2701 5-Volt Reference
45 - - Not Used
46 PU 5284 Low Reference
47 - - Not Used
48 PK/BK 1746 Fuel Injector Control (3)
49 - - Not Used
50 WH/BK 6396 CMP Actuator Solenoid Control Exhaust
51-52 - - Not Used
53 OG/WH 2122 Ignition Control (2)
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 Intake Air Temperature Sensor Signal
63 YE 573 Crankshaft Position Sensor Signal
64 D-GN 485 Throttle Position Sensor (1) Signal
65 - - Not Used
66 PU 486 Throttle Position Sensor (2) Signal
67 YE 492 Mass Air Flow Sensor Signal
68 GY/WH 3113 Heated Oxygen Sensor Heater Low Control Sensor 1
69 GY/WH 3122 Heated Oxygen Sensor Heater Low Control Sensor 2
70 - - Not Used
71 L-BU/BK 844 Fuel Injector (4) Control
72 TN 1744 Fuel Injector (1) Control
73 BK/WH 451 Signal Ground
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