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Home >> Buick >> 2012 >> Verano >> Repair and Diagnosis >> Electrical >> Wiring Diagrams >> Wiring Systems And Power Management - Component Connector End Views - K20 ECM X2 Through X85 >> Component Connector End Views >> K20 Engine Control Module X3

K20 Engine Control Module X3

GM1590596
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 34566-0203
  • Service Connector: 88988372
  • Description: 73-Way F MX123 34566 Series (BK with GY Terminal Position Assurance Lock)
 Terminal Part Information
  • Pins: 8-10, 16, 24-35, 39-40, 46, 48, 50, 52-55, 59-60, 66, 68, 70, 72, 73
  • Terminated Lead: Pending
  • Release Tool: Pending
  • Diagnostic Test Probe: Pending
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
K20 Engine Control Module X3

Pin Size Color Circuit Function Option
1-7 - - - Not Used -
8 0.5 BU 410 Engine Coolant Temperature Sensor Signal -
9 0.5 YE/BU 231 Oil Pressure Switch Signal -
10 0.5 VT/BU 6270 Crankshaft 60X Sensor Voltage -
11-15 - - - Not Used -
16 0.75 YE 7301 High Pressure Fuel Pump Actuator High - Control -
17-23 - - - Not Used -
24 0.5 BK/BN 2761 Coolant Temperature Sensor Low Reference -
25 0.5 GN 6271 Crankshaft 60X Sensor Signal -
26 0.5 BK/VT 6272 Crankshaft Position Sensor Signal (1) -
27 0.5 BU/WH 2122 Ignition Control (2) -
28 0.5 YE/BU 2124 Ignition Control (4) -
29 0.5 GN/BU 2123 Ignition Control (3) -
30 0.5 BU/VT 2121 Ignition Control (1) -
31 0.5 BK/GY 453 Ignition Control Low Reference -
32 0.75 VT/BK 7300 High Pressure Fuel Pump Actuator Low - Control -
33 0.5 YE/VT 5275 Camshaft Position Intake Sensor (1) -
34 0.5 GY/BU 5300 Camshaft Position Intake Sensor Supply Voltage (1) -
35 0.5 VT/BK 5273 Camshaft Position Exhaust Sensor (1) -
36-38 - - - Not Used -
39 0.5 GY/BU 5284 Camshaft Phaser Intake Solenoid (1) -
40 0.5 GY/YE 5282 Camshaft Phaser Exhaust Solenoid (1) -
41-45 - - - Not Used -
46 0.75 BN/YE 844 Fuel Injector Control (4) -
47 - - - Not Used -
48 0.75 YE/WH 1745 Fuel Injector Control (2) -
49 - - - Not Used -
50 0.75 BN/VT 1746 Fuel Injector Control (3) -
51 - - - Not Used -
52 0.75 BN/VT 1744 Fuel Injector Control (1) -
53 0.5 BK/GN 5301 Camshaft Position Intake Sensor Low Reference (1) -
54 0.5 YE/BK 5297 Camshaft Position Exhaust Sensor Supply Voltage (1) -
55 0.5 BK/GY 5296 Camshaft Position Exhaust Sensor Low Reference (1) -
56-58 - - - Not Used -
59 0.5 VT/BN 6753 Cam Phaser W Return Low Reference -
60 0.5 GY/BU 6754 Cam Phaser X Return Low Reference -
61-65 - - - Not Used -
66 0.75 BU/GY 5425 Fuel Injector Supply Voltage (4) -
67 - - - Not Used -
68 0.75 BU/YE 5422 Fuel Injector Supply Voltage (2) -
69 - - - Not Used -
70 0.75 BU/GN 5423 Fuel Injector Supply Voltage (3) -
71 - - - Not Used -
72 0.75 BU/WH 5421 Fuel Injector Supply Voltage (1) -
73 1.5 BK 450 Ground -
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