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Home >> GMC >> 2014 >> Terrain SLE, 4D Utility >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 (Wiring Systems And Power Management - Component Connector End Views - A3L Sunshade To K20 ECM X3 (Lea)) >> Component Connector End Views >> K20 Engine Control Module X3 (LEA)

K20 Engine Control Module X3 (LEA)

WARNING: This page is about a different car, the 2012 GMC Terrain and 2012 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
GM1590596Courtesy of
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 34566-1913
  • Service Connector: 88988372
  • Description: 73-Way F MX123 34566 Series (GY with BK Case)
Terminal Part Information
  • Pins: 8-10, 16, 24-35, 39, 40, 46, 48, 50, 52-55, 59, 60, 66, 68, 70, 72
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 8-10, 16, 24-35, 39, 40, 53-55, 59, 60 - J/J
  • Core/Insulation Crimp: Pins 46, 48, 50, 52, 66, 68, 70, 72 - K/K
  • Pins: 73
  • Terminated Lead: 13576375
  • Release Tool: J-38125-11A
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: 2/5
K20 Engine Control Module X3 (LEA)

Pin Wire Circuit Function
1-7 - - Not Available
8 0.5 YE 410 ECT Sensor Signal
9 0.5 TN/BK 231 Oil Pressure Switch Signal
10 0.5 PU/WH 6270 5-Volt 2 Reference
11-15 - - Not Available
16 0.5 YE 7301 High Pressure Fuel Pump Actuator High Control
17-23 - - Not Available
24 0.5 TN 2761 Low Reference
25 0.5 GY/BK 6272 Low Reference
26 0.5 WH/BK 6271 Crankshaft Position Sensor Signal
27 0.5 OG/WH 2122 IC 2 Control
28 0.5 D-GN/WH 2124 IC 4 Control
29 0.5 L-BU 2123 IC 3 Control
30 0.5 PU 2121 IC 1 Control
31 0.5 BN 2129 Low Reference
32 0.5 PU 7300 High Pressure Fuel Pump Actuator Low Control
33 0.5 OG 5275 Camshaft Position (CMP) Sensor - Intake Bank 1 Signal
34 0.5 D-BU 5300 5-Volt 1 Reference
35 0.5 D-GN 5273 Camshaft Position (CMP) Sensor - Exhaust Bank 1 Signal
36-38 - - Not Available
39 0.5 PK/BK 6395 Cam Phaser Control
40 0.5 WH/BK 6396 Cam Phaser Control
41-45 - - Not Available
46 0.75 D-BU 4802 Fuel Injector 2 Control
47 - - Not Available
48 0.75 L-GN 4803 Fuel Injector 3 Control
49 - - Not Available
50 0.75 L-BU 4804 Fuel Injector 4 Control
51 - - Not Available
52 0.75 BN 4801 Fuel Injector 1 Control
53 0.5 TN 5301 Low Reference
54 0.5 YE/BK 5297 5-Volt 1 Reference
55 0.5 GY 5296 Low Reference
56-58 - - Not Available
59 0.5 BN 6753 Low Reference
60 0.5 BN/WH 6754 Low Reference
61-65 - - Not Available
66 0.75 D-BU/WH 4902 Fuel Injector 2 Control
67 - - Not Available
68 0.75 L-GN/PU 4903 Fuel Injector 3 Control
69 - - Not Available
70 0.75 L-BU/WH 4904 Fuel Injector 4 Control
71 - - Not Available
72 0.75 BN/WH 4901 Fuel Injector 1 Control
73 2 BK/WH 451 Ground
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