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Home >> Cadillac >> 2009 >> XLR Base >> Repair and Diagnosis (Single Page) >> Electrical >> Component Locations >> Wiring Systems And Power Management - Electrical Center, Component & Splice Pack Connector End Views >> Component Connector End Views >> Engine Control Module (ECM) - X1
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Engine Control Module (ECM) - X1

Fig 1: Engine Control Module (ECM) - X1 Connector End View
GM1673474Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) - X1

Pin Wire Circuit Function
1-6 - - Not Used
7 0.35 WH 17 Stop Lamp Switch Signal
8 - - Not Used
9 0.5 TN 808 Low Reference
10-11 - - Not Used
12 0.35 BN/WH 419 MIL Control
13 0.35 D-GN/WH 465 Fuel Pump Relay Control
14-17 - - Not Used
18 0.35 YE 43 Accessory Voltage
19 0.5 PK 1439 Ignition 1 Voltage
20 0.8 RD/WH 2440 Battery Positive Voltage
21-24 - - Not Used
25 0.35 WH 121 Engine Speed Signal
26-32 - - Not Used
33 0.35 WH/BK 1164 5-Volt Reference - 2
34 0.5 GY 2709 5-Volt Reference - 1
35 0.35 TN 1274 5-Volt Reference - 1
36 0.35 BN 1271 Low Reference
37 0.35 PU 1272 Low Reference
38 - - Not Used
39 0.35 D-GN/WH 817 Vehicle Speed Signal
40 0.35 WH/BK 448 Ignition 1 Relay Control
41-43 - - Not Used
44 0.5 D-BU 1936 Fuel Level Sensor - Primary
45 0.5 L-BU 1937 Fuel Level Sensor - Secondary
46 0.35 BN 7123 SCIAP Sensor Signal (LC3)
47 0.35 D-BU 1161 APP Sensor 1 Signal
48 0.5 D-GN 890 Fuel Tank Pressure Sensor Signal
49 0.35 L-BU 1162 APP Sensor 2 Signal
50-52 - - Not Used
53 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control
54 - - Not Used
55 0.5 WH 1310 EVAP Canister Vent Solenoid Control
56 0.35 YE/BK 625 Starter Enable Relay Control
Connector Part Information 
  • OEM: 15499497
  • Service: 88988373
  • Description: 56-Way F MA123 Series, Sealed (BU)
Terminal Part Information 
  • Pins: 7, 12, 13, 18, 25, 33, 35-37, 39, 40, 46, 47, 49, 53, 56
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 9, 19, 20, 34, 44, 45, 48, 55
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 9, 19, 34, 44, 45, 48, 55 - J/J
  • Core/Insulation Crimp: Pins 20 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
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