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Engine Control Module (ECM) X1 (L96)

GM784851Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness: Engine
  • OEM: 13510837
  • Service: 88988373
  • Description: 56-Way F MX123 Series (BK)
Terminal Part Information
  • Pins: 2, 10, 12-14, 16, 24, 26, 28, 30, 34, 38, 40, 50, 52
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 3-5, 11, 18-20, 25, 27, 29, 31, 33, 39, 43, 45, 47, 53, 56
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins: 3-5, 11, 18-20, 25, 27, 29, 31, 33, 39, 43, 45, 47, 56 - J/J
  • Core/Insulation Crimp: Pins: 53 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) X1 (L96)

Pin Wire Circuit Function
1 - - Not Available
2 0.35 L-BU 1162 APP Sensor 2 Signal
3 0.5 YE 492 MAF Sensor Signal
4 0.5 GY/BK 1694 4WD Low Signal (NQG)
5 0.5 TN/WH 1695 Axle Switch Signal (NQG)
6-9 - - Not Available
10 0.35 D-BU 1161 APP Sensor 1 Signal
11 0.5 YE/WH 3200 Throttle Inlet Absolute Pressure Sensor Signal
12 0.35 OG/BK 380 A/C Refrigerant Pressure Sensor Signal (C67 or CJ2)
13 0.35 TN 5514 Low Reference
14 0.35 TN 1465 Fuel Pump Relay Control - Secondary
15 - - Not Available
16 0.35 TN 1274 5-Volt Reference 3
17 - - Not Available
18 0.5 D-BU 5985 Accessory Wakeup Serial Data
19 0.5 PK 439 Ignition 1 Voltage
20 0.5 RD/WH 440 Battery Positive Voltage
21-23 - - Not Available
24 0.35 WH/BK 1164 5-Volt Reference 4
25 0.5 GY/WH 3201 5-Volt Reference 1
26 0.35 GY/WH 2700 5-Volt Reference 1
27 0.5 YE/BK 625 Starter Enable Relay Control
28 0.35 D-GN/WH 465 Fuel Pump Relay Control - Primary
29 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+)
30 0.35 PU 1272 Low Reference
31 0.5 TN 2760 Low Reference
32 - - Not Available
33 0.5 L-BU/WH 6311 Brake Switch Signal
34 0.35 OG/BK 1786 Park/Neutral Signal
35-37 - - Not Available
38 0.35 BN 1271 Low Reference
39 0.5 TN/WH 3202 Low Reference
40 0.35 YE 5991 Powertrain Relay Coil Control
41-42 - - Not Available
43 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-)
44 - - Not Available
45 0.5 TN/BK 472 IAT Sensor Signal
46 - - Not Available
47 0.5 BN 25 Charge Indicator Signal
48-49 - - Not Available
50 0.35 YE/BK 1827 Vehicle Speed Signal
51 - - Not Available
52 0.35 BN/WH 419 MIL Control
53 0.8 D-GN/WH 459 A/C Compressor Clutch Relay Control (C67 or CJ2)
54-55 - - Not Available
56 0.5 WH 1310 EVAP Canister Vent Solenoid Control
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