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Engine Control Module (ECM) X1 (LY7)

Fig 1: Engine Control Module (ECM) X1 (LY7) Connector End View
GM816165Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X1 (LY7)

Pin Wire Circuit Function
1 0.5 TN 407 Knock Sensor 2 Signal
2 - - Not Used
3 0.5 L-GN 5278 HO2S Input Pump Current Sensor 1
4 0.5 OG 5275 CMP Sensor Signal - Intake Bank 1
5 0.75 GY 605 5-Volt Reference 1
6 - - Not Used
7 0.75 TN 470 Low Reference
8 0.5 PU 486 TP Sensor 2 Signal
9 0.5 D-GN/WH 2124 Ignition Control 4
10 0.5 WH/BK 5039 CKP Sensor Signal
11 - - Not Used
12 0.75 OG/BK 5272 CMP Actuator Solenoid Control - Intake Bank 2
13 0.75 L-GN 5282 CMP Actuator Solenoid Control - Exhaust Bank 1
14 - - Not Used
15 0.75 BN 582 TAC Motor Control - 2
16 0.75 GY/WH 3113 HO2S Heater Low Control Sensor 1
17 0.5 GY 1716 Knock Sensor 1 Signal
18 - - Not Used
19 0.5 PU/WH 1665 HO2S High Signal
20 0.5 D-GN 5273 CMP Sensor Signal - Exhaust Bank 1
21 0.5 GY 23 Generator Field Duty Cycle Signal
22 - - Not Used
23 0.5 YE 410 ECT Sensor Signal
24 - - Not Used
25 0.5 L-BU/WH 2126 Ignition Control 6
26 0.5 OG/WH 2122 Ignition Control 2
27-28 - - Not Used
29 0.75 PU 5284 Actuator Solenoid Control - Intake Bank 1
30 0.75 WH/BK 5283 Actuator Solenoid Control - Exhaust Bank 2
31 0.75 YE 581 TAC Motor Control - 1
32 - - Not Used
33 0.5 D-BU 496 Knock Sensor 1 Signal
34 - - Not Used
35 0.5 WH 5279 HO2S Pump Current
36 0.5 PU 5274 CMP Sensor Signal - Exhaust Bank 2
37-38 - - Not Used
39 0.5 TN 2752 Low Reference
40 0.5 TN/BK 231 Engine Oil Pressure Switch Signal
41 0.5 D-GN 2125 Ignition Control 5
0.5 PU 2121 Ignition Control 1
43 0.5 OG 225 Generator Turn On Signal
44 - - Not Used
45 0.75 L-BU/BK 844 Fuel Injector 4 Control
46 0.75 PK/BK 1746 Fuel Injector 3 Control
47 0.75 TN/WH 845 Fuel Injector 5 Control
48 0.35 D-GN/WH 428 EVAP Canister Purge Solenoid Valve Control
49 0.5 GY/BK 1798 Ground
50 0.5 L-BU 1876 Knock Sensor 2 Signal
51 - - Not Used
52 0.5 TN 1664 HO2S Low Signal
53 0.5 YE 5276 CMP Sensor Signal Intake Bank 2
54 0.5 GY 2701 5-Volt Reference
55 0.5 D-GN 485 TP Sensor 1 Signal
56 0.5 L-GN/BK 5266 MAP Sensor Signal
57 0.75 GY 705 5-Volt Reference 2
58 0.5 L-BU 2123 Ignition Control 3
59 0.5 PU/WH 5024 Low Reference
60-61 - - Not Used
62 0.75 L-GN/BK 1745 Fuel Injector 2 Control
63 0.75 TN 1744 Fuel Injector 1 Control
64 0.75 YE/BK 846 Fuel Injector 6 Control
Connector Part Information 
  • OEM: 1 928 403 379
  • Service: See Catalog
  • Description: 64-Way F (BK)
Terminal Part Information 
  • Pins: 1, 3-5, 7-10, 12, 13, 15-17, 19-21, 23, 25, 26, 29-31, 33, 35-43, 45-50, 52-59, 62-64
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
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