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Engine Control Module (ECM) A (LMN)

Fig 1: Engine Control Module Connector End View
GM1725344Courtesy of GENERAL MOTORS CORP.
Engine Control Module Connector Terminal Identification (ECM) A (LMN)

Pin Wire Circuit Function
1 L-BU - Fuel Injector 3 Control (w/ Immobilizer)
YE/BK - Fuel Injector 1 Control (w/o Immobilizer)
2 L-GN/BK - Fuel Injector 2 Control (w/ Immobilizer)
GN - Fuel Injector 4 Control (w/ Immobilizer)
3 - - Not Used
4 BN/WH - Fuel Rail Pressure Regulator Supply Voltage
5 - - Not Used
6 PU - Cruise Switch Ground
7 WH/BK - CKP Shield Ground
8 GN/WH - Fuel Rail Pressure Sensor Low Reference
9-11 - - Not Used
12 GY - CKP Low Reference
13 WH/BK - Boost Pressure Sensor 5 Volt Reference
14-15 - - Not Used
16 YE/BK - Fuel Injector 1 Control (w/ Immobilizer)
L-BU - Fuel Injector 3 Control (w/ Immobilizer)
17 GN - Fuel Injector 4 Control (w/ Immobilizer)
L-GN/BK - Fuel Injector 2 Control (w/o Immobilizer)
18 - - Not Used
19 PU/WH - Fuel Injection Pump Supply Voltage
20 BU/WH - CMP Low Reference
21-22 - - Not Used
23 YE/BU - Boost Pressure Sensor Low Reference
24-26 - - Not Used
27 BN/WH - CKP Signal
28 L-BU - Fuel Rail Pressure Sensor 5-Volt Reference
29-30 - - Not Used
31 PU - Fuel Injector 2 Low Reference (w/ Immobilizer)
WH/BK - Fuel Injector 4 Low Reference (w/o Immobilizer)
32 - - Not Used
33 WH/BK - Fuel Injector 4 Low Reference (w/ Immobilizer)
PU - Fuel Injector 2 Low Reference (w/o Immobilizer)
34 L-BU/BK - Fuel Rail Pressure Regulator Control
35-36 - - Not Used
37 BU/WH - IAT Signal
38-39 - - Not Used
40 GY/BK - Boost Pressure Sensor Signal
41 - - Not Used
42 PU/WH - MAF Signal
43 GY/BK - Fuel Rail Pressure Sensor Signal
44 YE/BK - IAT, MAF Low Reference
45 WH - Cruise Indicator Control
46 BN/WH - Fuel Injector 3 Low Reference (w/ Immobilizer)
WH - Fuel Injector 1 Low Reference (w/o Immobilizer)
47 WH - Fuel Injector 1 Low Reference (w/ Immobilizer)
BN/WH - Fuel Injector 3 Low Reference (w/o Immobilizer)
48 - - Not Used
49 GN - Fuel Injection Pump Control
50 L-GN/BK - CMP Signal
51 - - Not Used
52 GN - Throttle Plate Actuator Feedback Signal
53 L-GN - IAT Signal
54-55 - - Not Used
56 GN/WH - Cruise Switch Signal
57-58 - - Not Used
59 WH - Throttle Plate Actuator Control
60 GN/WH - EGR Control
Connector Part Information 
  • OEM: AMP 2-1355123-3
  • Service: N/A
  • Description: 60-Way F 60POS Receptacle Hsg Assembly (BK)
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