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HOMESERVICE MANUALSCHEVROLET2010MALIBU LT, 3.6 7REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 948 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - E29RF THROUGH K33)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X3 (LF1)
2010 Chevrolet Malibu LT, 3.6 7

K20 Engine Control Module X3 (LF1)

2010 Chevrolet Malibu LT, 3.6 7SECTION K20 Engine Control Module X3 (LF1)
WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: K20 Engine Control Module X3 (LF1) Connector End View
GM1968294Courtesy of GENERAL MOTORS CORP.
K20 Engine Control Module X3 (LF1)

Pin Wire Circuit Function
1-7 - - Not Used
8 0.5 YE 410 ECT Sensor Signal
9 0.5 TN/BK 231 Oil Pressure Switch Signal
10 0.5 GY 605 5-Volt Reference 2
11-12 - - Not Used
13 0.5 L-BU/WH 2126 IC 6 Control
14 0.5 D-GN 2125 IC 5 Control
15 0.5 BN/WH 2130 Low Reference
16 0.5 YE 7301 High Pressure Fuel Pump Actuator High Control
17-22 - - Not Used
23 0.5 TN 407 Low Reference
24 0.5 TN 476 Low Reference
25 0.5 TN 452 Low Reference
26 0.5 YE 573 CKP Sensor Signal
27 0.5 D-GN/WH 2124 IC 4 Control
28 0.5 L-BU 2123 IC 3 Control
29 0.5 OG/WH 2122 IC 2 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 Reference 1
35 0.5 D-GN 5273 Camshaft Position (CMP) Sensor - Exhaust Bank 1 Signal
36 0.5 YE 5276 Camshaft Position (CMP) Sensor - Intake Bank 2 Signal
37 0.5 L-BU 5302 5-Volt Reference 1
38 0.5 PU 5274 Camshaft Position (CMP) Sensor - Exhaust Bank 2 Signal
39 0.5 PU 5284 CMP Actuator Solenoid Control - Intake Bank 1
40 0.5 L-GN 5282 CMP Actuator Solenoid Control - Exhaust Bank 1
41 0.5 OG/BK 5272 CMP Actuator Solenoid Control - Intake Bank 2
42 0.5 WH/BK 5283 CMP Actuator Solenoid Control - Exhaust Bank 2
43-45 - - Not Used
46 0.8 L-BU 4804 Fuel Injector 4 Control
47 0.8 L-GN 4805 Fuel Injector 5 Control
48 0.8 D-BU 4802 Fuel Injector 2 Control
49 - - Not Used
50 0.8 D-GN 4803 Fuel Injector 3 Control
51 0.8 PU 4806 Fuel Injector 6 Control
52 0.8 BN 4801 Fuel Injector 1 Control
53 0.5 TN 5301 Low Reference
54 0.5 YE/BK 5297 5-Volt Reference 1
55 0.5 GY 5296 Low Reference
56 0.5 BN/WH 5303 Low Reference
57 0.5 L-GN 5298 5-Volt Reference 1
58 0.5 BN 5299 Low Reference
59 0.5 BN 6753 Low Reference
60 0.5 BN/WH 6754 Low Reference
61 0.5 D-BU 6755 Low Reference
62 0.5 D-BU/WH 6756 Low Reference
63-65 - - Not Used
66 0.8 L-BU/WH 4904 Fuel Injector 4 Control
67 0.8 L-GN/WH 4905 Fuel Injector 5 Control
68 0.8 D-BU/WH 4902 Fuel Injector 2 Control
69 - - Not Used
70 0.8 D-GN/WH 4903 Fuel Injector 3 Control
71 0.8 PU/WH 4906 Fuel Injector 6 Control
72 0.8 BN/WH 4901 Fuel Injector 1 Control
73 2 BK/WH 451 Ground
Connector Part Information 
  • Harness Type: Engine
  • OEM Connector: 13742538
  • Service Connector: 13574948
  • Description: 73-Way F MX123 34566 Series (BK With GY Insert)
Terminal Part Information 
  • Pins: 8-72
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 8-10, 13-16, 23-42, 53-62 - J/J
  • Core/Insulation Crimp: Pins 46-48, 50-52, 66-68, 70-72 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 1326030-8/17
  • Core/Insulation Crimp: A/4
  • Release Tool/Test Probe: 12094429/J-35616-35 (VT)
RENDER: 1.0x

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  • • You smell fuel, burning insulation, or see smoke.
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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.