LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis (Single Page) >> Electrical >> Component Locations >> Wiring Systems And Power Management - Electrical Center, Ground & Component Connector End Views >> Component Connector End Views >> Engine Control Module (ECM) (L76) X1
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Control Module (ECM) (L76) X1

Fig 1: Engine Control Module (ECM) (L76) X1 Connector End View
GM1989343Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) (L76) X1

Pin Wire Color Circuit No. Function
1 0.5 OG/BK 1786 Park/Neutral Signal
2-8 - - Not Used
9 0.5 WH/BU 17 Stop Lamp Switch Signal
10 0.5 PU/WH 1668 HO2S High Signal (Bank 1 Sensor 2)
11 0.5 BN/WH 1669 HO2S Low Signal (Bank 1 Sensor 2)
12 0.5 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
13 0.5 BN/GN 2759 Low Reference
14-15 - - Not Used
16 0.5 PU 1589 Fuel Level Sensor Signal (Primary)
17 0.5 D-BU/BK 473 High Speed Cooling Fan Relay Control
18 0.5 D-BU 5985 Accessory Wakeup Serial Data
19 0.5 PK 439 Ignition 1 Voltage
20 0.75 OG/BK 540 Battery Positive Voltage
21 0.5 D-BU 1809 Brake Booster Vacuum Sensor
22 0.5 L-GN/BK 6258 5V Return Brake Booster Vacuum
23 0.5 PU 1272 Low Reference
24 0.5 D-GN 890 Fuel Tank Vapour Pressure
25-26 - - Not Used
27 0.5 BN 9001 High Speed GMLAN Serial Data Bus-
28 0.5 BN/BK 9000 High Speed GMLAN Serial Data Bus+
29 0.5 D-BU/WH 1161 APP Sensor 1 Signal
30 0.5 BN 1271 Low Reference
31 0.5 BN/YE 452 Low Reference
32 0.5 L-BU 1162 APP Sensor 2 Signal
33 0.5 GY 2709 5V reference
34 0.5 GY 1688 5-Volt Reference
35 - - Not Used
36 0.5 BN/YE 1274 5-Volt Reference
37 0.5 BN/RD 472 IAT Sensor Signal
38 0.5 BN/WH 2760 Low Reference
39-40 - - Not Used
41 0.5 YE 492 MAF Sensor Signal
42-46 - - Not Used
47 0.75 PK/BU 5290 Ignition 1 Voltage
48 - - Not Used
49 0.5 BN/WH 1671 HO2S Low Signal (Bank 2 Sensor 2)
50 0.5 D-GN/WH 465 Fuel Pump Relay Control (Primary)
51 - - Not Used
52 0.5 YE 447 Starter Relay Coil Control
53 0.5 L-GN 6257 5V reference
54-55 - - Not Used
56 0.5 WH/BK 1164 5-Volt Reference
57 - - Not Used
58 0.5 D-GN 335 Low Speed Cooling Fan Relay Control
59 0.5 BN 5069 Main Relay Control
60 - - Not Used
61 0.5 WH 1310 Fuel Tank Vent
62-63 - - Not Used
64 0.5 OG/WH 3223 HO2S Heater Low Control (Bank 2 Sensor 2)
65 0.5 BN 2391 HO2S Heater Low Control (Bank 1 Sensor 2)
66-67 - - Not Used
68 0.5 BN/WH 419 MIL Control
69 0.5 PU 1670 HO2S High Signal (Bank 2 Sensor 2)
70 0.5 L-BU 1937 Fuel Level Sensor Signal (Secondary)
71-72 - - Not Used
73 2 BK 450 Ground
Connector Part Information 
  • OEM: 7283-9139-30
  • Service: See Catalog
  • Description: 73-Way F
Terminal Part Information 
  • Pins: 1-72
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pin: 73
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-35 (VT)
scientia non olet · About LEMON Manuals