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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2051 (COMPONENT CONNECTOR END VIEWS - (2 OF 5))ENGINE CONTROL MODULE (ECM) X2 (LY7)
2004 Oldsmobile Bravada AWD

Engine Control Module (ECM) X2 (LY7)

2004 Oldsmobile Bravada AWDSECTION Engine Control Module (ECM) X2 (LY7)
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) X2 (LY7) Connector End View
GM1590596Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X2 (LY7)

Pin Wire Circuit Function
1 0.5 PU 2121 Ignition Coil 1 Control
2 0.5 TN/WH 3111 HO2S Low Reference Voltage Bank 1 Sensor 1
3 0.5 PU/WH 3110 HO2S Reference Voltage Bank 1 Sensor 1
4 0.5 PU 3120 HO2S High Signal Bank 1 Sensor 2
5 0.5 TN/WH 3121 HO2S Low Signal Bank 1 Sensor 2
6 0.5 L-BU 1876 Knock Sensor (KS) 2 Signal
7 0.5 GY 2303 Knock Sensor (KS) 2 Signal
8 0.5 D-BU 496 Knock Sensor (KS) 1 Signal
9 0.5 GY 1716 Knock Sensor (KS) 1 Signal
10 - - Not Used
11 0.75 YE 581 Throttle Actuator Control (TAC) Motor Control - 1
12 0.75 BN 582 Throttle Actuator Control (TAC) Motor Control - 2
13 0.8 PK/BK 6341 Ignition Voltage
14 0.5 PK/BK 6395 Camshaft Position (CMP) Actuator Solenoid Control - Bank 1 Intake
15 0.5 TN/BK 6397 Camshaft Position (CMP) Actuator Solenoid Control - Bank 2 Intake
16 - - Not Used
17 0.5 OG/WH 2122 Ignition Coil 2 Control
18 - - Not Used
19 0.5 BN/WH 2130 Low Reference
20 0.5 PU 6267 Camshaft Position (CMP) Sensor Low Reference - Bank 1 Exhaust
21 0.5 TN 6268 Camshaft Position (CMP) Sensor Low Reference - Bank 2 Intake
22 0.5 WH 6269 Low Reference
23 0.5 BN 6266 Camshaft Position (CMP) Sensor Low Reference - Bank 1 Intake
24 0.5 BK 2755 Low Reference
25-26 - - Not Used
27 0.5 GY/BK 6272 Low Reference
28 - - Not Used
29 0.5 TN 2752 Low Reference
30 0.5 BN/WH 6754 Camshaft Position (CMP) Actuator Solenoid Control - Bank 1 Exhaust
31 0.5 D-BU/WH 6756 Camshaft Position (CMP) Actuator Solenoid Low Reference - Bank 2 Exhaust
32 0.5 L-BU/BK 844 Fuel Injector 4 Control
33 0.5 L-BU 2123 Ignition Coil 3 Control
34 0.5 L-BU/WH 2126 Ignition Coil 6 Control
35 0.5 BN 2129 Low Reference
36 0.5 D-GN 6457 5-Volt Reference 1
37 0.5 OG 6260 5-Volt Reference 1
38 0.5 PK 6261 5-Volt Reference 1
39 0.5 D-BU 6259 5-Volt Reference 1
40-41 - - Not Used
42 0.5 TN 2760 Low Reference
43 0.5 PU/WH 6270 5-Volt Reference 2
44 0.5 GY 2701 5-Volt Reference 2
45 - - Not Used
46 0.5 BN 6753 Camshaft Position (CMP) Actuator Solenoid Low Reference - Bank 1 Intake
47 0.5 D-BU 6755 Camshaft Position (CMP) Actuator Solenoid Low Reference - Bank 2 Intake
48 0.5 L-GN/BK 1745 Fuel Injector 2 Control
49 0.5 YE/BK 846 Fuel Injector 6 Control
50 0.5 WH/BK 6396 Camshaft Position (CMP) Actuator Solenoid Control - Bank 1 Exhaust
51 0.5 GY/BK 6394 Camshaft Position (CMP) Actuator Solenoid Control - Bank 2 Exhaust
52 0.5 TN/WH 845 Fuel Injector 5 Control
53 0.5 D-GN/WH 2124 Ignition Coil 4 Control
54 0.5 D-GN 2125 Ignition Coil 5 Control
55 - - Not Used
56 0.5 D-GN/WH 6264 Camshaft Position (CMP) Sensor Signal - Bank 1 Exhaust
57 0.5 OG/BK 6263 Camshaft Position (CMP) Sensor Signal - Bank 2 Intake
58 0.5 PK/BK 6262 Camshaft Position (CMP) Sensor Signal - Bank 2 Exhaust
59 0.5 D-BU/WH 6265 Camshaft Position (CMP) Sensor Signal - Bank 1 Intake
60-61 - - Not Used
62 0.5 L-BU 6289 Intake Air Temperature (IAT) Sensor Signal
63 0.5 WH/BK 6271 Crankshaft Position (CKP) Sensor Signal
64 0.5 D-GN 485 Throttle Position (TP) Sensor 1 Signal
65 - - Not Used
66 0.5 PU 486 Throttle Position (TP) Sensor 2 Signal
67 0.5 YE 492 Mass Air Flow (MAF) Sensor Signal
68 0.5 GY/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
69 0.5 GY/WH 3122 HO2S Heater Low Control - Bank 1 Sensor 2
70 - - Not Used
71 0.5 PK/BK 1746 Fuel Injector 3 Control
72 0.5 TN 1744 Fuel Injector 1 Control
73 3 BK/WH 251 Ground
Connector Part Information 
  • OEM: 15499466
  • Service: 88988931
  • Description: 73-Way F MX123 Series, Sealed (BK)
Terminal Part Information 
  • Pins: 1-9, 11-12, 14-15, 17, 19-24, 27, 29, 30-39, 42-44, 46-54, 56, 57-59, 62-64, 66-69, 71-72
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 1-9, 14-15, 17, 19-24, 27, 29-39, 42-44, 46-54, 56-59, 62-64, 66-69, 71-72 - J/J
  • Core/Insulation Crimp: Pins 11-12 - See Terminal Repair Kit
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 13
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 1326030-8/17
  • Core/Insulation Crimp: 4/D
  • Release Tool/Test Probe: 12094429/J-35616-4A (PU)
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.
  • • 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.