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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1124 (Component Locations & Component Connector End Views) >> Component Connector End Views >> Engine Control Module (ECM) X1 (LLT)
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Engine Control Module (ECM) X1 (LLT)

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) X1 (LLT) Connector End View
GM1826274Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X1 (LLT)

Pin Wire Circuit Function
1 0.75 L-GN 5282 Camshaft Phaser Exhaust Solenoid (1)
2 0.75 PU 5284 Camshaft Phaser Intake Solenoid (1)
3 1 PU/WH 4906 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 6
4 1 PU 4806 Direct Fuel Injector (DFI) High Voltage Control Cylinder 6
5 1 YE 7301 High Pressure Fuel Pump Actuator High Control
6 0.75 D-GN/WH 428 EVAP Canister Purge Solenoid Control
7 0.5 OG 5275 Camshaft Position Intake Sensor (1)
8 - - Not Used
9 0.5 PU 5274 Camshaft Position Exhaust Sensor (2)
10 0.5 RD 225 Generator Turn On Signal
11-13 - - Not Used
14 0.35 GY 5127 After Boil Heater Relay Control
15 0.5 GY 705 5-Volt Reference
16-17 - - Not Used
18 0.35 BN 7448 Vacuum Assist Pump Relay Coil Control
19 0.35 GY/BK 1337 12-Volt Reference
19-23 - - Not Used
24 0.5 YE 581 TAC Motor Control - 1
25 0.8 WH/BK 5283 Camshaft Phaser Exhaust Solenoid (2)
26 1 D-GN 4803 Direct Fuel Injector (DFI) High Voltage Control Cylinder 3
27 1 D-GN/WH 4903 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 3
28 1 L-GN 4805 Direct Fuel Injector (DFI) High Voltage Control Cylinder 5
29 1 L-GN/WH 4905 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 5
30 0.5 GY 23 Generator Field Duty Cycle Signal
31-32 - - Not Used
33 0.5 YE 5276 Camshaft Position Intake Sensor (2)
34 0.5 D-GN 5273 Camshaft Position Exhaust Sensor
35 0.5 YE 573 CKP Sensor Signal
36 0.5 YE 2918 FRP Sensor Signal
37 - - Not Used
38 0.5 GY 598 5-Volt Reference
39 0.5 GY 2701 5-Volt Reference
40 0.5 GY 596 5-Volt Reference
41 0.5 BK 552 Low Reference
42 0.5 BK 808 Low Reference
43 0.5 BK 470 Low Reference
44 0.5 BK 476 Low Reference
45 0.5 GY 605 5-Volt Reference
46 0.5 BK 452 Low Reference
47 - - Not Used
48 0.5 BN 582 TAC Motor Control - 2
49 0.8 OG/BK 5272 Camshaft Phaser Intake Solenoid
50 1 L-BU 4804 Direct Fuel Injector (DFI) High Voltage Control Cylinder 4
51 1 BN 4801 Direct Fuel Injector (DFI) High Voltage Control Cylinder 1
52 1 D-BU 4802 Direct Fuel Injector (DFI) High Voltage Control Cylinder 2
53 1 D-BU/WH 4902 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 2
54 - - Not Used
55 0.5 PU 2121 IC 1 Control
56 0.5 L-BU 2123 IC 3 Control
57 0.5 D-GN 2125 IC 5 Control
58 - - Not Used
59 .5 D-BU 496 Knock Sensor Signal
60 0.5 GY 2303 Knock Sensor Signal
61 0.5 TN/WH 331 Oil Pressure Sensor Signal
62-66 - - Not Used
67 0.5 TN/WH 3111 HO2S Low Reference (Bank 1 Sensor 1)
68-69 - - Not Used
70 0.5 PU/WH 3210 HO2S Reference Voltage (Bank 2 Sensor 1)
71 - - Not Used
72 0.75 L-GN 3212 HO2S Heater Low Control Bank 2 Sensor 1
73 0.8 PU 7300 High Pressure Fuel Pump Actuator Low Control
74 1 L-BU/WH 4904 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4
75 1 BN/WH 4901 Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1
76 0.5 PK/BK 5291 Ignition 1 Voltage
77 0.5 PK/BK 5292 Ignition 1 Voltage
78 .- - Not Used
79 0.5 RD/WH 2122 IC 2 Control
80 0.5 D-GN/WH 2124 IC 4 Control
81 0.5 L-BU/WH 2126 IC 6 Control
82 0.5 YE 410 ECT Sensor Signal
83 0.5 GY 1716 Knock Sensor Signal
84 0.5 L-BU 1876 Knock Sensor 2 Signal
85-87 - - Not Used
88 0.5 BK 2752 Low Reference
89 0.5 PU 486 TP Sensor 2 Signal
90 0.5 D-GN 485 TP Sensor 1 Signal
91 - - Not Used
92 0.5 PU/WH 3110 HO2S Reference Voltage (Bank 1 Sensor 1)
93 0.5 TN/WH 3211 HO2S Low Reference (Bank 1 Sensor 1)
94-95 - - Not Used
96 0.75 BK/WH 3113 Heater Low Control Bank 1 Sensor 1
Connector Part Information 
  • OEM: 1928404781
  • Service: 19149311
  • Description: 96-Way F 1.2 Series, Sealed (BK)
Terminal Part Information 
  • Pins: 1
  • Terminal/Tray: 7116-4142-02/10
  • Core/Insulation Crimp: D/3
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)
  • Pins: 25, 38
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 26, 49, 51, 52
  • Terminal/Tray: 1928498056/8
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: J-38125-561/J-35616-35 (VT)
  • Pins: 1, 2, 4-7, 9, 10, 15, 25, 26, 28, 30, 33-36, 38, 40-46, 49-52, 61, 73, 82
  • Terminal/Tray: 1928498132/8
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 2-6, 14, 18, 24, 26-29, 33, 36, 50-53, 73-75
  • Terminal/Tray: 1928498135/19
  • Core/Insulation Crimp: Pins 2-6, 14, 17, 18, 24, 26, 28, 29, 33, 36, 73 - See Terminal Repair Kit
  • Core/Insulation Crimp: Pins 3, 4, 26-29, 50-53, 74, 75 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
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