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Home >> Chevrolet >> 2012 >> Volt >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Wiring Systems And Power Management - Component Connector End Views - F101 Through K112B >> Component Connector End Views >> K20 Engine Control Module X1

K20 Engine Control Module X1

GM784851
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 34576-0703
  • Service Connector: 88988373
  • Description: 56-Way F MX123 34576 Series (BK with BU Terminal Position Assurance Lock)
Terminal Part Information
  • 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 20 - K/K
  • Core/Insulation Crimp: Pins 1-3, 10, 12, 13, 15, 16, 18, 19, 24, 26, 28-33, 38, 40, 41, 43, 45, 46, 48, 51, 52, 55 - J/J
K20 Engine Control Module X1

Pin Size Color Circuit Function Option
1 0.5 L-BU/BK 7493 High Speed GMLAN Serial Data (+) (3) -
2 0.5 L-GN/WH 1162 Accelerator Pedal Position Signal (2) -
3 0.5 L-GN/WH 492 Mass Air Flow Sensor Signal -
4-9 - - - Not Used -
10 0.5 YE/WH 1161 Accelerator Pedal Position Signal (1) -
11 - - - Not Used -
12 0.5 L-GN 380 A/C Refrigerant Pressure Sensor Signal -
13 0.5 BK/BN 5514 Low Reference -
14 - - - Not Used -
15 0.5 WH 7494 High Speed GMLAN Serial Data (-) (3) -
16 0.5 BN/RD 1274 5 Volt Reference -
17 - - - Not Used -
18 0.5 L-BU/WH 3977 Accessory Wakup Serial Data 2 -
19 0.5 VT/WH 239 Run/Crank Ignition 1 Voltage -
20 0.75 RD/BN 440 Battery Positive Voltage -
21-23 - - - Not Used -
24 0.5 WH/RD 1164 5 Volt Reference -
25 - - - Not Used -
26 0.5 BN/RD 2700 5 Volt Reference -
27 - - - Not Used -
28 0.5 L-GN/GY 465 Fuel Pump Primary Relay Control -
29 0.5 L-BU 2500 High Speed GMLAN Serial Data (+) (1) -
30 0.5 BK/VT 1272 Low Reference -
31 0.5 BK/VT 2760 Low Reference -
32 0.5 BK/L-BU 6813 Low Reference -
33 0.5 WH/L-BU 6311 Cruise/ETC/TCC Brake Signal -
34-37 - - - Not Used -
38 0.5 BK/L-BU 1271 Low Reference -
39 - - - Not Used -
40 0.5 WH 5148 Engine Main Relay Control -
41 0.5 L-BU/VT 2364 Cooling Fan Speed Signal -
42 - - - Not Used -
43 0.5 WH 2501 High Speed GMLAN Serial Data (-) (1) -
44 - - - Not Used -
45 0.5 WH/L-BU 6289 Induction Air Temperature Sensor Signal -
46 0.5 YE/BK 3000 Coolant Temperature Sensor #2 Signal -
47 - - - Not Used -
48 0.5 L-GN 6271 Crankshaft 60X Sensor Signal -
49-50 - - - Not Available -
51 0.5 L-BU/BN 421 Air Injection Reaction Solenoid Relay Coil Control NU6
52 0.5 BN/WH 419 Check Engine Indicator Control -
53-54 - - - Not Available -
55 0.5 L-GU/L-BU 436 Air Injection Reaction Pump Relay Coil Control NU6
56 - - - Not Available -