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Engine Control Module (ECM) X2

GM1590592Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 12582677
  • Service Connector: 88988931
  • Description: 73-Way F 0.64 2.8 Series, Sealed (BK with BK Terminal Position Assurance)
Terminal Part Information
  • Pins: 2, 55, 64
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Not Available
  • Pins: 1-72
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Pin: 73
  • Terminated Lead: Service by Harness- See Part Catalog
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
Engine Control Module (ECM) X2

Pin Wire Circuit Function
1, 2 - - Not Used
3 0.5 TN 808 Sensor Low Reference
4-9 - - Not Used
10 0.5 PU/WH 3110 Heated Oxygen Sensor High Signal Bank 1 Sensor (1)
11 0.5 PU/WH 3210 Heated Oxygen Sensor High Signal Bank 2 Sensor (1) (LFW)
12 0.5 PU 3120 Heated Oxygen Sensor High Signal Bank 1 Sensor (2)
13 0.5 PU 3220 Heated Oxygen Sensor High Signal Bank 2 Sensor (2) (LFW)
14 0.5 GY 2093 Fuel Saver Mode (ECO) Switch 5V Reference
15 - - Not Used
16 0.5 BN 582 Throttle Actuator Control Close
17 - - Not Used
18 0.5 GY 598 5 Volt Reference
19 0.5 YE 2918 Fuel Rail Pressure Sensor Signal
20-25 - - Not Used
26 0.5 TN/WH 3111 Heated Oxygen Sensor Low Signal Bank 1 Sensor (1)
27 0.5 TN/WH 3211 Heated Oxygen Sensor Low Signal Bank 2 Sensor (1) (LFW)
28 0.5 TN/WH 3121 Heated Oxygen Sensor Low Signal Bank 1 Sensor (2)
29 0.5 TN 3221 Heated Oxygen Sensor Low Signal Bank 2 Sensor (2) (LFW)
30 - - Not Used
31 0.5 BK/WH 251 Signal Ground
32 0.5 YE 581 Throttle Actuator Control Open
33 0.5 D-GN 485 Throttle Position Sensor Signal (1)
34 0.5 GY 2701 Throttle Position Sensor 5 Volt Reference
35 0.5 PU 486 Throttle Position Sensor Signal (2)
36 0.5 D-BU 496 Knock Sensor Signal (1)
37 0.5 L-BU 1876 Knock Sensor Signal (2) (LFW)
38-40 - - Not Used
41 0.5 GY/WH 3113 Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (1)
42 0.5 GY/WH 3122 Heated Oxygen Sensor Heater Low Control Bank 1 Sensor (2)
43 0.5 L-GN 432 Manifold Absolute Pressure Sensor Signal
44 0.5 GY 2704 Manifold Absolute Pressure Sensor 5 Volt Reference
45-48 - - Not Used
49 0.5 L-BU 6289 Induction Air Temperature Sensor Signal
50 0.5 PK/WH 2092 Fuel Saver Mode (ECO) Switch Signal
51 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control
52 0.5 YE 492 Mass Air Flow Sensor Signal
53 0.5 OG 225 Generator Turn On Signal
54 0.5 TN 2752 Throttle Position Sensor Low Reference
55 0.5 GY 23 Generator Field Duty Cycle Signal
56 0.5 GY 1716 Knock Sensor Low Reference (1)
57 0.5 GY 2303 Knock Sensor Low Reference (2) (LFW)
58 0.5 OG/BK 1786 Transmission Park/Neutral Signal (1)
59, 60 - - Not Used
61 0.5 L-GN 3212 Heated Oxygen Sensor Heater Low Control Bank 2 Sensor (1) (LFW)
62 0.5 OG/WH 3223 Heated Oxygen Sensor Heater Low Control Bank 2 Sensor (2) (LFW)
63 0.5 OG/BK 469 Manifold Absolute Pressure Sensor Low Reference
64-68 - - Not Used
69 0.5 TN 2760 Intake Air Temperature Sensor Low Reference
70-72 - - Not Used
73 3 BK/WH 251 Ground
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