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Powertrain Control Module (PCM) X2 (L26)

Fig 1: Powertrain Control Module (PCM) X2 (L26) Connector End View
GM1524159Courtesy of GENERAL MOTORS CORP.
Powertrain Control Module (PCM) X2 (L26)

Pin Wire Color Circuit No. Function
1 0.5 BN 1456 EGR Valve Position Signal
2 0.35 OG/BK 1061 UART Serial Data Secondary
3 0.35 TN 800 UART Serial Data Primary
4 0.5 BK/WH 845 Fuel Injector 5 Control
5 0.5 BK 1744 Fuel Injector 1 Control
6 0.5 YE/BK 846 Fuel Injector 6 Control
7 0.5 PK/BK 1746 Fuel Injector 3 Control
8 0.5 BK 2753 Low Reference
9 0.5 L-GN/BK 1745 Fuel Injector 2 Control
10 0.5 L-BU/BK 844 Fuel Injector 4 Control
11 0.35 TN/BK 424 IC Timing Signal
12 0.5 BK/WH 3112 HO2S Heater Low Control Sensor 1
13 0.5 RD 1676 EGR Solenoid High Control
14-15 - - Not Used
16 0.5 GY 435 EGR Solenoid Low Control
17 - - Not Used
18 0.35 L-GN 432 MAP Sensor Signal
19-25 - - Not Used
26 0.35 BK 630 Camshaft Position Signal
27 0.35 PU/WH 430 Low Resolution Engine Speed Signal
28 0.35 L-BU/BK 647 Medium Resolution Engine Speed Signal
29 0.35 BK 2761 Low Reference
30 0.35 OG/BK 469 Low Reference
31 0.35 BN 1174 Oil Level Switch Signal
32 - - Not Used
33 0.5 GY 2702 5-Volt Reference 1
34 0.35 GY 2704 5-Volt Reference 1
35 0.5 GY 474 5-Volt Reference 2 (NU6)
36 - - Not Used
37 0.35 RD/BK 453 Low Reference
38-40 - - Not Used
41 0.35 D-GN/WH 428 EVAP Canister Purge Solenoid Control
42-44 - - Not Used
45 0.35 GY 23 Generator Field Duty Cycle Signal
46 0.35 D-BU 496 Knock Sensor 1 Signal
47 0.5 TN/WH 3111 HO2S Low Signal
48 0.5 PU/WH 3110 HO2S High Signal
49-52 - - Not Used
53 0.35 RD 225 Generator Turn On Signal
54 - - Not Used
55 0.35 YE 410 ECT Sensor Signal
56 - - Not Used
57 0.35 TN/BK 231 Oil Pressure Switch Signal
58 0.35 L-BU 1876 Knock Sensor 2 Signal
59 0.35 PK/BK 429 AIR Solenoid Control (NU6)
60 - - Not Used
61 0.35 WH 423 IC Timing Control
62-72 - - Not Used
73 2 BK/WH 451 Ground
Connector Part Information 
  • OEM: 13519095
  • Service: 88953274
  • Description: 73-Way F Micro-Pack/064 Series (BK)
Terminal Part Information 
  • Pins: 1-13, 16, 18, 26-31, 33-35, 37, 41, 45-48, 53, 55, 57-59, 61
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
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