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Home >> Cadillac >> 2006 >> CTS V >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - 6.0L - Introduction (2 Of 2) >> 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

GM1228485Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12582680
  • 56-Way F Micro-Pack 64 Sealed (BU)
Pin Wire Color Circuit No. Function
1 YE 5 Crank Voltage
2-5 - - Not Used
6 BN/WH 379 CCP Switch Signal
7 OG 5371 BAS Relay Coil Supply Voltage
8 - - Not Used
9 TN 452 Low Reference
10 - - Not Used
11 YE/BK 5270 Traction Control Signal Data
12 BN/WH 419 MIL Control
13 - - Not Used
14 D-GN/WH 465 Fuel Pump Primary Relay Control
15 PU 1807 Class 2 Serial Data (Primary)
16 PU 1807 Class 2 Serial Data (Primary)
17 - - Not Used
18 YE 343 Accessory Voltage
19 PK 239 Ignition Voltage
20 RD/WH 1440 Battery Position Voltage
21-24 - - Not Used
25 WH 121 Engine Speed Signal
26-28 - - Not Used
29 GY 1884 Cruise Control Switch Signal
30-32 - - Not Used
33 WH/BK 1164 5-Volt Reference
34 GY 596 5-Volt Reference
35 TN 1274 5-Volt Reference
36 BN 1271 Low Reference
37 PU 1272 Low Reference
38 - - Not Used
39 BN 818 Vehicle Speed Signal
40 BN 5069 Main Relay Control
41-43 - - Not Used
44 D-BU 1936 Primary Fuel Level Sensor Signal
45 L-BU 1937 Secondary Fuel Level Sensor Signal
46 - - Not Used
47 D-BU 1161 APP Sensor 1 Signal
48 D-GN 890 Fuel Tank Pressure Sensor Signal
49 L-BU 1162 APP Sensor 2 Signal
50-52 - - Not Used
53 D-GN/WH 459 A/C Compressor Clutch Relay Control
54 D-BU 473 High Speed Cooling Fan Relay Control
55 WH 1310 EVAP Canister Vent Solenoid Control
56 YE 447 Starter Relay Coil Control
Engine Control Module (ECM) - C2

GM1581643Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12582677
  • 73-Way F Micro-Pack 64 Sealed (BK)
Pin Wire Color Circuit No. Function
1 PU 2121 IC 1 Control
2 TN 1664 HO2S Low Signal - Bank 1 Sensor 1
3 PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1
4 PU/WH 1668 HO2S High Signal - Bank 1 Sensor 2
5 TN/WH 1669 HO2S Low Signal - Bank 1 Sensor 2
6 L-BU 1876 Knock Sensor 2 Signal
7 TN 407 Low Reference
8 D-BU 496 Knock Sensor/Signal
9 GY 1716 Low Reference
10 - - Not Used
11 YE 581 TAC Motor Control - 1
12 BN 582 TAC Motor Control - 2
13 PK/BK 5290 Powertrain Main Relay Fused Supply
14-15 - - Not Used
16 L-BU/BK 1746 Fuel Injector 3 Control
17 PU/WH 2128 IC 8 Control
18 D-GN/WH 2124 IC 4 Control
19 BN/WH 2130 Low Reference
20-22 - - Not Used
23 PK/BK 632 Low Reference
24 BK 2755 Low Reference
25-26 - - Not Used
27 YE/BK 1868 Low Reference
28 PK/BK 5290 Powertrain Main Relay Fused Supply
29 TN/WH 1704 Low Reference
30-31 - - Not Used
32 L-GN/BK 1745 Fuel Injector 2 Control
33 OG 2127 IC 7 Control
34 D-GN 2125 IC 5 Control
35 BN 2129 Low Reference
36-38 - - Not Used
39 OG 631 12-Volt Reference
40 GY 2705 5-Volt Reference
41 - - Not Used
42 TN 552 Low Reference
43 L-GN 1867 12-Volt Reference
44 L-BU/WH 1688 5-Volt Reference
45-47 - - Not Used
48 D-BU/WH 878 Fuel Injector 7 Control
49 TN/WH 845 Fuel Injector 5 Control
50-51 - - Not Used
52 YE/BK 846 Fuel Injector 6 Control
53 OG/WH 2122 IC 2 Control
54 L-BU/WH 2126 IC 6 Control
55 L-BU 2123 IC 3 Control
56-58 - - Not Used
59 BN/WH 633 CMP Sensor
60 TN/WH 331 Oil Pressure Sensor Signal
61 - - Not Used
62 TN 472 IAT Sensor Signal
63 D-BU/WH 1869 CKP Sensor Signal
64 D-GN 485 TP Sensor 1 Signal
65 - - Not Used
66 PU 486 TP Sensor 2 Signal
67 YE 492 MAF Sensor Signal
68 GY/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
69 BN 2391 HO2S Heater Low Control - Bank 1 Sensor 2
70 L-BU/BK 844 Fuel Injector 4 Control
71 OG/BK 877 Fuel Injector 7 Control
72 TN 1744 Fuel Injector 1 Control
73 BK 750 Ground
Engine Control Module (ECM) - C3

GM1581643Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12582678
  • 73-Way F Micro-Pack 64 Sealed (D-GY)
Pin Wire Color Circuit No. Function
1-2 - - Not Used
3 TN 1667 HO2S Low Signal - Bank 2 Sensor 1
4 PU 1666 HO2S High Signal - Bank 2 Sensor 1
5 PU 1670 HO2S High Signal - Bank 2 Sensor 2
6 TN 1671 HO2S Low Signal - Bank 2 Sensor 2
7 OG 225 Generator Turn On Signal
8 L-GN 1652 Reverse Lockout Solenoid Control
9-11 - - Not Used
12 TN/BK 464 Delivered Torque Signal
13 GY 587 Skip/Shift Solenoid Control
14 - - Not Used
15 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
16 - - Not Used
17 OG/BK 463 Requested Torque Signal
18 BN 1174 Oil Level Switch Signal
19-20 - - Not Used
21 TN 5514 Low Reference
22 - - Not Used
23 OG/BK 469 Low Reference
24-28 - - Not Used
29 GY 23 Generator Field Duty Cycle Signal
30-32 - - Not Used
33 TN 2501 High Speed GMLAN Serial Data Bus -
34 - - Not Used
35 TN 2761 Low Reference
36 OG/BK 1057 Low Reference
37 GY 2700 5-Volt Reference
38 - - Not Used
39 GY 2704 5-Volt Reference
40-46 - - Not Used
47 PU/WH 1035 Starter Relay Coil Supply Voltage
48 D-GN/WH 428 EVAP Canister Purge Solenoid Control
49 D-GN 335 Low Speed Cooling Fan Relay Control
50 OG/WH 3223 HO2S Heater Low Control (Bank 2 Sensor 2)
51-52 - - Not Used
53 TN/BK 2500 High Speed GMLAN Serial Data Bus +
54 - - Not Used
55 YE 410 ECT Sensor Signal
56 YE/BK 1227 TFT Sensor Signal
57 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
58 - - Not Used
59 L-GN 432 MAP Sensor Signal
60-65 - - Not Used
66 PU/WH 821 VSS High Signal
67 L-GN/BK 822 VSS Low Signal
68-72 - - Not Used
73 BK 750 Ground
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