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Home >> Cadillac >> 2016 >> CTS Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Wiring Systems And Power Management - Component Connector End Views - E37LR To K20 X3 (Coupe)) >> Component Connector End Views >> K20 Engine Control Module X3 (LFW or LFX)
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K20 Engine Control Module X3 (LFW or LFX)

WARNING: This page is about a different car, the 2015 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
GM1650395
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 34566-3863
  • Service Connector: 88988372
  • Description: 73-Way F MX123 34566 Series (BK with GY Terminal Position Assurance Lock)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Core Crimp Insulation Crimp
I 13575412 J-35616-2A (GY) J-38125-553 Not Available Not Available Not Available Not Available
II 13575412 J-35616-2A (GY) J-38125-553 7116-4152-02 9 2 5
Pin Size Color Circuit Function Terminal Type ID Option
1 0.5 TN/WH 331 Oil Pressure Sensor Signal I -
2 0.5 GY 596 5-Volt Reference 1 I -
3-7 - - - Not Occupied - -
8 0.5 YE 410 Engine Coolant Temperature (ECT) Sensor Signal I -
9 - - - Not Occupied - -
10 0.5 GY 605 5-Volt Reference2 I -
11-12 - - - Not Occupied - -
13 0.5 L-BU/WH 2126 IC 6 Control I -
14 0.5 D-GN 2125 IC 5 Control I -
15 0.5 BN/WH 2130 Low Reference I -
16 0.75 YE 7301 High Pressure Fuel Pump Actuator Solenoid Control I -
17 0.5 TN 470 Low Reference I -
18-23 - - - Not Occupied - -
24 0.5 TN 476 Low Reference I -
25 0.5 TN 452 Low Reference I -
26 0.5 YE 573 CKP Sensor Signal I -
27 0.5 D-GN/WH 2124 IC 4 Control I -
28 0.5 L-BU 2123 IC 3 Control I -
29 0.5 OG/WH 2122 IC 2 Control I -
30 0.5 PU 2121 IC 1 Control I -
31 0.5 BN 2129 Low Reference I -
32 0.75 PU 7300 High Pressure Fuel Pump Actuator Low Control I -
33 0.5 OG 5275 CMP Sensor Signal I -
34 0.5 D-BU 5300 5-Volt Reference 1 I -
35 0.5 D-GN 5273 CMP Sensor Signal Exhaust - Bank 1 I -
36 0.5 YE 5276 CMP Sensor Signal Intake - Bank 2 I -
37 0.5 L-BU 5302 5-Volt Reference 1 I -
38 0.5 PU 5274 CMP Sensor Signal Exhaust - Bank 2 I -
39 0.5 PU 5284 Low Reference I -
40 0.5 L-GN 5282 Low Reference I -
41 0.5 OG/BK 5272 CMP Actuator Solenoid Control - Intake Bank 2 I -
42 0.5 WH/BK 5283 CMP Actuator Solenoid Control - Exhaust Bank 2 I -
43-45 - - - Not Occupied - -
46 0.75 BU 4804 Low Reference I -
47 0.75 GN 4805 Low Reference I -
48 0.75 BU 4802 Low Reference I -
49 - - - Not Occupied - -
50 0.75 GN 4803 Low Reference I -
51 0.75 PU 4806 Low Reference I -
52 0.75 BN 4801 Low Reference I -
53 0.5 TN 5301 Low Reference I -
54 0.5 YE/BK 5297 5-Volt Reference 1 I -
55 0.5 GY 5296 Low Reference I -
56 0.5 BN/WH 5303 Low Reference I -
57 0.5 L-GN 5298 5-Volt Reference 1 I -
58 0.5 BN 5299 Low Reference I -
59 0.5 BN 6753 Low Reference I -
60 0.5 BN/WH 6754 Low Reference I -
61 0.5 D-BU 6755 Low Reference I -
62 0.5 D-BU/WH 6756 Low Reference I -
63-65 - - - Not Occupied - -
66 0.75 BU/WH 4904 Fuel Injector 4 Control I -
67 0.75 GN/WH 4905 Fuel Injector 5 Control I -
68 0.75 BU/WH 4902 Fuel Injector 2 Control I -
69 - - - Not Occupied - -
70 0.75 GN/WH 4903 Fuel Injector 3 Control I -
71 0.75 PU/WH 4906 Fuel Injector 6 Control I -
72 0.75 BN/WH 4901 Fuel Injector 1 Control I -
73 2 BK/WH 1551 Ground II -
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