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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 886 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - E THROUGH H)COMPONENT CONNECTOR END VIEWS - E THROUGH HENGINE CONTROL MODULE (ECM) X1 (LAP)
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Engine Control Module (ECM) X1 (LAP)

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Engine Control Module (ECM) X1 (LAP)
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) X1 (LAP)
GM1590592Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X1 (LAP)

Pin Wire Circuit Function
1 0.35 D-BU 1161 APP Sensor 1 Signal
2 - - Not Available
3 0.35 BN 4 Accessory Voltage
4 - - Not Used
5 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
6 0.35 D-GN/WH 465 Fuel Pump Relay Control
7-10 - - Not Available
11 0.35 OG/GN 7360 Low Reference (M86)
12 - - Not Available
13 0.35 YE 5991 Powertrain Relay Control
14-17 - - Not Available
18 0.35 L-BU 1162 APP Sensor 2 Signal
19 0.5 PK 1039 Ignition Voltage
20 0.5 RD/WH 840 Battery Positive Voltage
21 0.35 PU 1272 Low Reference
22-23 - - Not Available
24 0.35 TN 2759 Low Reference
25 0.35 OG/BK 380 A/C Refrigerant Pressure Sensor Signal (C67)
26 - - Not Available
27 0.35 BN/WH 419 MIL Control
28-29 - - Not Available
30 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control (C67)
31 - - Not Available
32 0.35 PU/WH 6386 Starter Control
33 - - Not Available
34 0.35 PU/WH 6356 VSS Signal Low
35-36 - - Not Available
37 0.35 YE 492 MAF Sensor Signal
38 - - Not Available
39 0.35 PU 1589 Fuel Level Sensor Signal
40 - - Not Available
41 0.35 BN 1271 Low Reference
42 0.35 D-GN 890 FTP Sensor Signal
43 0.35 TN/BK 2500 High Speed GMLAN Serial Data (+) 1
44 0.35 TN 2501 High Speed GMLAN Serial Data (-) 1
45 0.35 D-BU/WH 7361 5-Volt Reference 2 (M86)
46 - - Not Available
47 0.35 WH/BK 1164 5-Volt Reference 2
48 - - Not Available
49 0.35 D-BU 473 Coolant Fan Relay Output - Coil
50-53 - - Not Available
54 0.35 BN/WH 6354 VSS Signal High
55 0.35 L-BU 20 Stop Lamp Supply Voltage
56 0.35 D-GN 1433 PNP/Clutch Start Switch Signal (M86/MN5/MM5)
57 0.35 D-GN 6307 Park/Neutral Signal (MN5/MMS)
58 0.35 L-BU 6289 IAT Sensor Signal
59-60 - - Not Available
61 0.35 L-GN 6338 CPP Sensor Signal (M86)
62-65 - - Not Available
66 0.35 GY 2709 5-Volt Reference 1
67 0.35 TN 1274 5-Volt Reference 1
68 0.35 BN 436 Air Injection Reaction Pump Motor Relay Output - Coil (NU6)
69 - - Not Available
70 0.5 WH 1310 EVAP Canister Vent Solenoid Control
71-72 - - Not Available
73 0.8 PK/BK 5290 Ignition Voltage
Connector Part Information 
  • Harness: Engine
  • OEM: 15499466
  • Service: 88988931
  • Description: 73-Way F MX123 Series, Sealed (BK)
Terminal Part Information 
  • Pin: 73
  • Terminal/Tray: 7116-4151-02/9
  • Core/Insulation Crimp: C
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: 1, 3-6, 13, 18, 21, 24, 25, 27, 30, 31, 34, 36, 37, 39, 41-44, 47, 49, 54-56, 58, 66-68
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 19, 20, 70
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • 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.
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