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Home >> Cadillac >> 2005 >> XLR >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Introduction >> Component Locator >> Engine Control Module (ECM) Connector End Views
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Engine Control Module (ECM) Connector End Views

Engine Control Module (ECM) - C1 Connector End View

GM1228485Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15430219
  • Service: See Catalog
  • 56-Way F Micro-Pack 64 Series (BU)
Pin Wire Color Circuit No. Function
1 TN/BK 2500 High Speed GMLAN Serial Data Bus (+)
2 TN 2501 High Speed GMLAN Serial Data Bus (-)
3-4 - - Not Used
5 TN 1274 5-Volt Reference
6 - - Not Used
7 WH/BK 1164 5-Volt Reference
8-9 - - Not Used
10 WH 1310 EVAP Canister Vent Solenoid Control
11 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
12 - - Not Used
13 WH 17 Stop Lamp Switch Signal
14 YE/BK 625 Starter Enable Relay Control
15-16 - - Not Used
17 PK 439 Ignition 1 Voltage
18 PK 1439 Ignition 1 Voltage
19 PK 1439 Ignition 1 Voltage
20 RD/WH 2440 Battery Positive Voltage
21 L-BU 1162 APP Sensor 2 Signal
22 - - Not Used
23 D-GN/WH 465 Fuel Pump Relay Control
24 BN/WH 419 MIL Control
25 D-GN/WH 459 A/C Compressor Clutch Relay Control
26 WH 121 Engine Speed Signal
27 D-BU 1161 APP Sensor 1 Signal
28 D-GN/WH 817 Vehicle Speed Signal
29 YE 492 MAF Sensor Signal
30 - - Not Used
31 TN 2760 Low Reference
32 BK/WH 2751 Low Reference
33 OG/BK 812 12-Volt Reference
34 - - Not Used
35 GY 2700 5-Volt Reference
36 BN 1271 Low Reference
37 PU 1272 Low Reference
38-42 - - Not Used
43 WH/BK 448 Powertrain Diagnostic Enable
44-45 - - Not Used
46 YE 43 Accessory Voltage
47 - - Not Used
48 BN 5546 Fuel Pump Speed Control Feedback Signal
49-50 - - Not Used
51 TN/BK 472 IAT Sensor Signal
52-54 - - Not Used
55 D-GN 335 Low Speed Cooling Fan Relay Control
56 - - Not Used
Engine Control Module (ECM) - C2 Connector End View

GM784850Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15430228
  • Service: See Catalog
  • 73-Way F Micro-Pack 64 Series (BK)
Pin Wire Color Circuit No. Function
1-2 - - Not Used
3 D-GN 485 TP Sensor 1 Signal
4 PU 486 TP Sensor 2 Signal
5-7 - - Not Used
8 L-GN 432 MAP Sensor Signal
9 - - Not Used
10 YE 573 CKP Sensor 1 Signal
11 L-BU 1876 Knock Sensor 2 Signal
12 GY 23 Generator Field Duty Cycle Signal
13 GY 1716 Low Reference
14 L-GN 5282 CMP Actuator Solenoid Control Bank 1 Exhaust
15-16 - - Not Used
17 TN 1744 Fuel Injector 1 Control
18 L-GN/BK 1745 Fuel Injector 2 Control
19 D-BU 496 Knock Sensor 1 Signal
20 PK/BK 1746 Fuel Injector 3 Control
21 OG/BK 877 Fuel Injector 7 Control
22 TN/WH 845 Fuel Injector 5 Control
23 YE/BK 846 Fuel Injector 6 Control
24 D-BU/WH 878 Fuel Injector 8 Control
25 D-GN 5273 CMP Sensor Signal Bank 1 Exhaust
26 - - Not Used
27 BN/WH 5303 Low Reference
28 GY 2303 Low Reference
29 PU 5284 CMP Actuator Solenoid Control Bank 1 Intake
30 L-BU/BK 844 Fuel Injector 4 Control
31 OG/BK 5272 CMP Actuator Solenoid Control Bank 2 Intake
32 OG 5275 CMP Sensor Signal Bank 1 Intake
33 D-BU 5300 12-Volt Reference
34 WH/BK 5283 CMP Actuator Solenoid Control Bank 2 Exhaust
35 TN 5301 Low Reference
36 OG/BK 469 Low Reference
37 TN 2752 Low Reference
38 TN 2761 Low Reference
39 BN/WH 2130 Low Reference
40 L-BU 5302 12-Volt Reference
41 PU 574 Low Reference
42 BN 2129 Low Reference
43 PU 5274 CMP Sensor Signal Bank 2 Exhaust
44 BN 582 TAC Motor Control - 2
45 GY 5296 Low Reference
46 L-GN 5298 12-Volt Reference
47 BN 5299 Low Reference
48 YE 581 TAC Motor Control - 1
49 YE 5276 CMP Sensor Signal Bank 2 Intake
50 L-GN 1867 12-Volt Reference
51 GY 2701 5-Volt Reference
52-53 - - Not Used
54 YE 410 ECT Sensor Signal
55 D-GN/WH 428 EVAP Canister Purge Solenoid Control
56-57 - - Not Used
58 PU 2121 IC 1 Control
59 OG/WH 2122 IC 2 Control
60 OG 2127 IC 7 Control
61 L-BU 2123 IC 3 Control
62 D-GN/WH 2124 IC 4 Control
63 PU/WH 2128 IC 8 Control
64 D-GN 2125 IC 5 Control
65 GY 2704 5-Volt Reference
66-67 - - Not Used
68 OG 225 Generator Turn On Signal
69 L-BU/WH 2126 IC 6 Control
70 - - Not Used
71 YE/BK 5297 12-Volt Reference
72 - - Not Used
73 BK/WH 451 Ground
Engine Control Module (ECM) - C3 Connector End View

GM1283894Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • OEM: 15430218
  • Service: See Catalog
  • 56-Way F Micro-Pack 64 Series (GY)
Pin Wire Color Circuit No. Function
1 PU 3110 HO2S Reference Voltage Bank 1 Sensor 1
2 TN/WH 3111 HO2S Low Reference Bank 1 Sensor 1
3 PU/WH 5281 HO2S Output Pump Current Bank 1 Sensor 1
4-11 - - Not Used
12 D-BU 1936 Fuel Level Sensor Signal - Primary
13 GY/WH 3122 HO2S Heater Low Control Bank 1 Sensor 2
14-15 - - Not Used
16 OG/BK 3223 HO2S Heater Low Control Bank 2 Sensor 2
17 - - Not Used
18 OG/BK 1786 Park/Neutral Signal
19 TN/WH 3121 HO2S Low Signal Bank 1 Sensor 2
20 PU 3220 HO2S High Signal Bank 2 Sensor 2
21 TN 3221 HO2S Low Signal Bank 2 Sensor 2
22 OG 5280 HO2S Input Pump Current Bank 1 Sensor 1
23 BN 1174 Oil Level Switch Signal
24 L-BU 1937 Fuel Level Sensor Signal - Secondary
25 TN/WH 331 Oil Pressure Sensor Signal
26-36 - - Not Used
37 TN 808 Low Reference
38 BK 2755 Low Reference
39 - - Not Used
40 GY/WH 3113 HO2S Heater Low Control Bank 1 Sensor 1
41 L-GN 3212 HO2S Heater Low Control Bank 2 Sensor 1
42 GY 2709 5-Volt Reference
43 PU 3120 HO2S High Signal Bank 1 Sensor 2
44 D-GN 890 Fuel Tank Pressure Sensor Signal
45 PU/WH 3210 HO2S Reference Voltage Bank 2 Sensor 1
46 TN/WH 3211 HO2S Low Reference Bank 2 Sensor 1
47 - - Not Used
48 WH 5279 HO2S Output Pump Current Bank 2 Sensor 1
49 L-GN 5278 HO2S Input Pump Current Bank 2 Sensor 1
50 - - Not Used
51 GY 2705 5-Volt Reference
52-56 - - Not Used
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