SYS.OK|MANUAL.DBâ—Ź LIVE
HOMESERVICE MANUALSCHEVROLET2008COBALT LS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT VIEWS & COMPONENT CONNECTOR END VIEWSCOMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) X1 (LNF)
2008 Chevrolet Cobalt LS, 4D Sedan, Standard

Engine Control Module (ECM) X1 (LNF)

2008 Chevrolet Cobalt LS, 4D Sedan, StandardSECTION Engine Control Module (ECM) X1 (LNF)
Fig 1: Engine Control Module (ECM) X1 (LNF) Connector End View
GM1544242Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X1 (LNF)

Pin Wire Circuit Function
1 0.35 L-GN 5282 Camshaft Phaser Exhaust Solenoid Control
2 0.5 PU 5284 Camshaft Phaser Intake Solenoid Control
3-4 - - Not Used
5 0.35 YE 7301 High Pressure Fuel Pump Actuator High Control
6 0.35 D-GN/WH 428 EVAP Canister Purge Solenoid Control
7 0.5 OG 5275 Camshaft Position Intake Sensor Signal
8-9 - - Not Used
10 0.35 OG 225 Generator Turn On Signal
11-12 - - Not Used
13 0.35 BN/WH 2130 Low Reference
14 - - Not Used
15 0.35 GY 705 5-Volt Reference 2
16 0.35 D-GN 6391 Turbo Bypass Valve Control
17 0.35 TN/BK 231 Oil Pressure Switch Signal
18 0.35 YE 258 Wastegate Solenoid Control
19-23 - - Not Used
24 0.5 YE 581 TAC Motor Control - 1
25 0.35 TN 891 Boost Gauge Signal
26 0.35 L-BU 4804 Direct Fuel Injector (DFI) High Voltage Control Cylinder 4
27 0.35 L-BU/WH 4904 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4
28 0.35 D-BU 4802 Direct Fuel Injector (DFI) High Voltage Control Cylinder 2
29 0.35 D-BU/WH 4902 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2
30 0.35 GY 23 Generator Field Duty Cycle Signal
31-33 - - Not Used
34 0.5 D-GN 5273 Camshaft Position Exhaust Sensor Signal
35 0.35 YE 573 CKP Sensor Signal
36 0.35 YE 2918 FRP Sensor Signal
37 0.5 L-GN 432 MAP Sensor Signal
38 0.35 GY 598 5-Volt Reference 1
39 0.35 GY 2701 5-Volt Reference 3
40 0.35 TN 407 Low Reference
41 0.35 TN 552 Low Reference
42 0.35 TN 808 Low Reference
43 0.35 GY 597 5-Volt Reference
44 0.35 TN 2761 Low Reference
45 0.35 L-GN 2867 5-Volt Reference 3
46 0.35 PU 574 Low Reference
47 - - Not Used
48 0.5 BN 582 TAC Motor Control 2
49-50 - - Not Used
51 0.35 BN 4801 Direct Fuel Injector (DFI) High Voltage Control Cylinder 1
52 0.35 D-GN 4803 Direct Fuel Injector (DFI) High Voltage Control Cylinder 3
53 0.35 D-GN/WH 4903 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3
54 0.35 BN/WH 419 MIL Control
55 0.35 PU 2121 IC 1 Control
56 0.35 D-GN/WH 2124 IC 4 Control
57-58 - - Not Used
59 0.5 D-BU 496 KS 1 Signal
60 0.35 GY 2303 KS 2 Signal
61-63 - - Not Used
64 0.5 OG/BK 469 Low Reference
65 - - Not Used
66 0.35 PU 7330 Pre-Throttle Air Temp and Press (TMAP) Air Pressure Signal
67 0.5 TN/WH 3111 Heated Oxygen Sensor Low Signal Sensor 1
68 0.35 WH 5279 Heated Oxygen Sensor Pump Current Sensor 1
69-72 - - Not Used
73 0.35 PU 7300 High Pressure Fuel Pump Actuator Low Control
74 - - Not Used
75 0.35 BN/WH 4901 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1
76-77 - - Not Used
78 0.35 BN 2129 Low Reference
79 0.35 L-BU 2123 IC 3 Control
80 0.35 OG/WH 2122 IC 2 Control
81 - - Not Used
82 0.35 YE 410 ECT Sensor Signal
83 0.5 GY 1716 KS 1 Signal
84 0.35 L-BU 1876 KS 2 Signal
85 - - Not Used
86 0.35 L-BU 7329 Pre-Throttle Air Temp and Press (TMAP) Temperature Signal
87 - - Not Used
88 0.35 TN 2752 Low Reference
89 0.35 PU 486 TP Sensor 2 Signal
90 0.35 D-GN 485 TP Sensor 1 Signal
91 0.35 L-GN 5278 Heated Oxygen Sensor Input Pump Current Sensor 1
92 0.5 PU/WH 3110 Heated Oxygen Sensor High Signal Sensor 1
93-94 - - Not Used
95 0.5 GY 2704 5-Volt Reference 1
96 0.5 GY/WH 3113 HO2S Heater Low Control - Sensor 1
Connector Part Information 
  • OEM: 15438366
  • Service: 88988373
  • Description: 96-Way Sealed (BK)
Terminal Part Information 
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

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

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • 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.