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K20 Engine Control Module X3 (L3B)

WARNING: This page is about a different car, the 2021 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
GM2533189Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 13529956
  • Service Connector: 13574948
  • 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
I 13587518 J-35616-35 (VT) J-38125-11A
II 19351723 J-35616-64B (LT BU) J-38125-213
Pin Size Color Circuit Function Terminal Type ID Option
1 - - - Not Occupied - -
2 0.5 GN 3060 Turbocharger Bypass Solenoid Valve Control Bank 1 II -
3 0.5 BN 25 Charge Indicator Control II -
4 - 5 - - - Not Occupied - -
6 0.5 VT / BU 6270 Crankshaft Position Sensor Voltage II -
7 0.5 BN / RD 2701 Throttle Position Sensor 5V Reference II -
8 - - - Not Occupied - -
9 0.5 GN / WH 432 Manifold Absolute Pressure Sensor Signal II -
10 0.5 VT / BU 3120 HO2S High Signal Bank 1 Sensor 2 II -
11 0.5 WH / YE 3121 HO2S Low Signal Bank 1 Sensor 2 II -
12 0.5 VT / BN 5284 Intake Camshaft Position Actuator Solenoid Valve 1 II -
13 0.5 GY / BU 5282 Exhaust Camshaft Position Actuator Solenoid Valve 1 II -
14 0.75 BU 2976 Coolant Diverter Valve Actuator Control Open II -
15 0.75 WH / BN 2591 Turbocharger Wastegate Motor Open Control II -
16 0.75 WH / BU 2592 Turbocharger Wastegate Motor Close Control II -
17 - 19 - - - Not Occupied - -
20 0.5 BN / YE 4066 Driveline Mount Actuator 2 Control II -
21 0.5 BK / YE 548 Engine Control Sensors Low Reference 1 II -
22 0.5 BK / VT 6272 Crankshaft Position Sensor Low Reference II -
23 0.5 BK / BN 2752 Throttle Position Sensor Low Reference II -
24 0.5 YE / BU 2408 Engine Inlet Coolant Temperature Signal II -
25 0.5 VT 2988 Engine Outlet Coolant Temperature Signal II -
26 0.5 WH / BU 7329 Pre-Throttle Air Temperature Signal II -
27 0.5 BU / YE 8938 Engine Integrated Exhaust Manifold Temperature Signal II -
28 0.5 BK / BN 6753 Camshaft Position Actuator Solenoid Valve W Low Reference II -
29 0.5 BK / VT 6754 Camshaft Position Actuator Solenoid Valve X Low Reference II -
30 0.75 YE 581 Throttle Actuator Open Control II -
31 0.75 BN / WH 582 Throttle Actuator Close Control II -
32 0.75 BU / BN 2977 Coolant Diverter Valve Actuator Control Close II -
33 0.5 VT / GY 496 Knock Sensor 1 Signal II -
34 0.5 WH / GY 1876 Knock Sensor 2 Signal II -
35 0.5 BK / GN 469 Manifold Absolute Pressure Sensor Low Reference II -
36 0.5 GN / BU 428 EVAP Canister Purge Solenoid Control II -
37 - 38 - - - Not Occupied - -
39 0.5 BK / GN 5301 Intake Camshaft Position Sensor Low Reference 1 II -
40 0.5 BK / GY 5296 Exhaust Camshaft Position Sensor Low Reference 1 II -
41 - - - Not Occupied - -
42 0.5 VT / BK 5273 Exhaust Camshaft Position Sensor 1 II -
43 0.5 GN 6271 Crankshaft Position Sensor Signal II -
44 0.5 YE / BU 2124 Ignition Control 4 II -
45 0.5 BU / WH 2122 Ignition Control 2 II -
46 0.5 BK / BU 2129 Ignition Control Low Reference Bank 1 II -
47 0.5 GY / WH 3122 HO2S Heater Low Control Bank 1 Sensor 2 II -
48 0.5 BU / WH 3630 Throttle Position Sensor SENT 1 Signal II -
49 0.75 BU / WH 4904 Direct Fuel Injector High Voltage Supply Cylinder 4 II -
50 0.75 GY / BU 4804 Direct Fuel Injector High Voltage Control Cylinder 4 II -
51 0.75 BU / GY 4902 Direct Fuel Injector High Voltage Supply Cylinder 2 II -
52 0.75 BU 4802 Direct Fuel Injector High Voltage Control Cylinder 2 II -
53 0.5 BK / YE 1716 Knock Sensor Low Reference 1 II -
54 0.5 BK / GY 2303 Knock Sensor Low Reference 2 II -
55 0.5 GY / RD 2704 Manifold Absolute Pressure Sensor 5V Reference II -
56 0.5 YE / BN 106 Oil Pump Motor Control II -
57 0.5 BU 179 Engine Oil Pump Control II -
58 - - - Not Occupied - -
59 0.5 GY / BU 5300 Intake Camshaft Position Sensor 1 Voltage Reference II -
60 0.5 GY / YE 5297 Exhaust Camshaft Position Sensor 1 Voltage Reference II -
61 0.5 GY 23 Generator Field Duty Cycle Signal II -
62 - - - Not Occupied - -
63 0.5 YE / VT 5275 Intake Camshaft Position Sensor 1 II -
64 0.5 BU / VT 2121 Ignition Control 1 II -
65 0.5 GN / BU 2123 Ignition Control 3 II -
66 - - - Not Occupied - -
67 0.75 VT / BK 7300 High Pressure Fuel Pump Low Control II -
68 0.75 YE 7301 High Pressure Fuel Pump High Control II -
69 0.75 BN / WH 4901 Direct Fuel Injector High Voltage Supply Cylinder 1 II -
70 0.75 BN 4801 Direct Fuel Injector High Voltage Control Cylinder 1 II -
71 0.75 GN / GY 4903 Direct Fuel Injector High Voltage Supply Cylinder 3 II -
72 0.75 GN 4803 Direct Fuel Injector High Voltage Control Cylinder 3 II -
73 2 VT / BU 5290 Powertrain Main Relay Fused Supply Voltage 1 I -
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