LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2014 >> XTS Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Wiring Diagrams >> Wiring Systems And Power Management - Component Connector End Views - K20 To K50 (X1 Db3) >> Component Connector End Views >> K20 Engine Control Module X3 (LF3)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

K20 Engine Control Module X3 (LF3)

GM1590596
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 34566-0203
  • Service Connector: 88988372
  • Description: 73-Way F 0.64, 2.8 Series Sealed (BK with GY Terminal Position Assurance)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Core Crimp Insulation Crimp
I 13575575 J-35616-64B (L-BU) J-38125-213 33467-0005 23 J J
II 13575797 J-35616-35 (VT) J-38125-11A 7116-4152-02 9 A 5
K20 Engine Control Module X3 (LF3)

Pin Size Color Circuit Function Terminal Type ID Option
1-2 - - - Not Occupied - -
3 0.5 YE 3054 Turbo Intake Pressure Sensor Signal Bank (1) I -
4-7 - - - Not Occupied - -
8 0.5 L-BU 410 Engine Coolant Temperature Sensor Signal I -
9 0.5 YE/L-BU 231 Oil Pressure Switch Signal I -
10 0.5 VT/L-BU 6270 Crankshaft 60X Sensor Voltage I -
11-12 - - - Not Occupied - -
13 0.5 BN/L-BU 2126 Ignition Control (6) I -
14 0.5 L-BU/GY 2125 Ignition Control (5) I -
15 0.5 BK/GY 2130 Low Reference I -
16 0.5 YE 7301 High Pressure Fuel Pump Actuator High - Control I -
17 - - - Not Occupied - -
18 0.5 GY/RD 3053 Turbo Intake Pressure Sensor High Reference Bank (1) I -
19-23 - - - Not Occupied - -
24 0.5 BK/BN 2761 Low Reference I -
25 0.5 BK/VT 6272 Low Reference I -
26 0.5 L-GN 6271 Crankshaft 60X Sensor Signal I -
27 0.5 YE/L-BU 2124 Ignition Control (4) I -
28 0.5 L-GN/L-BU 2123 Ignition Control (3) I -
29 0.5 L-BU/WH 2122 Ignition Control (2) I -
30 0.5 L-BU/VT 2121 Ignition Control (1) I -
31 0.5 BK/L-BU 2129 Low Reference I -
32 0.5 VT/BK 7300 High Pressure Fuel Pump Actuator Low - Control I -
33 0.5 YE/VT 5275 Camshaft Position Intake Sensor (1) I -
34 0.5 GY/L-BU 5300 Camshaft Position Intake Sensor Supply Voltage (1) I -
35 0.5 VT/BK 5273 Camshaft Position Exhaust Sensor (1) I -
36 0.5 YE 5276 Camshaft Position Intake Sensor (2) I -
37 0.5 WH/L-BU 5302 Camshaft Position Intake Sensor Supply Voltage (2) I -
38 0.5 VT/L-BU 5274 Camshaft Position Exhaust Sensor (2) I -
39 0.5 VT/BN 5284 Camshaft Phaser Intake Solenoid (1) I -
40 0.5 GY/L-BU 5282 Camshaft Phaser Exhaust Solenoid (1) I -
41 0.5 L-GN 5272 Camshaft Phaser Intake Solenoid (2) I -
42 0.5 L-GN/BN 5283 Camshaft Phaser Exhaust Solenoid (2) I -
43-45 - - - Not Occupied - -
46 0.75 GY/L-BU 4804 Direct Fuel Injector (DFI) High Voltage Control Cylinder 4 I -
47 0.75 WH/L-GN 4805 Direct Fuel Injector (DFI) High Voltage Control Cylinder 5 I -
48 0.75 L-BU 4802 Direct Fuel Injector (DFI) High Voltage Control Cylinder 2 I -
49 - - - Not Occupied - -
50 0.75 L-GN 4803 Direct Fuel Injector (DFI) High Voltage Control Cylinder 3 I -
51 0.75 VT/L-GN 4806 Direct Fuel Injector (DFI) High Voltage Control Cylinder 6 I -
52 0.75 BN 4801 Direct Fuel Injector (DFI) High Voltage Control Cylinder 1 I -
53 0.5 BK/L-GN 5301 Low Reference I -
54 0.5 GY/YE 5297 Camshaft Position Exhaust Sensor Supply Voltage (1) I -
55 0.5 BK/GY 5296 Low Reference I -
56 0.5 BK/VT 5303 Low Reference I -
57 0.5 L-GN/BN 5298 Camshaft Position Exhaust Sensor Supply Voltage (2) I -
58 0.5 BK/BN 5299 Low Reference I -
59 0.5 BK/BN 6753 Low Reference I -
60 0.5 BK/VT 6754 Low Reference I -
61 0.5 BK/VT 6755 Low Reference I -
62 0.5 BK/GY 6756 Low Reference I -
63-65 - - - Not Occupied - -
66 0.75 L-BU/WH 4904 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4 I -
67 0.75 L-GN/WH 4905 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 5 I -
68 0.75 L-BU/GY 4902 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2 I -
69 - - - Not Occupied - -
70 0.75 L-GN/GY 4903 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3 I -
71 0.75 VT/GY 4906 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3 I -
72 0.75 BN/WH 4901 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1 I -
73 2.5 BK/WH 451 Ground II -
scientia non olet · About LEMON Manuals