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HOMESERVICE MANUALSCADILLAC2013CTS V, 2D COUPE, AUTOMATIC TRANSREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS (5 OF 7)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X2 (LFW OR LFX)
2013 Cadillac CTS V, 2D Coupe, Automatic Trans

K20 Engine Control Module X2 (LFW or LFX)

2013 Cadillac CTS V, 2D Coupe, Automatic TransSECTION K20 Engine Control Module X2 (LFW or LFX)
GM1673472
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 12582677
  • Service Connector: 88988931
  • Description: 73-Way F 0.64/2.8 Series, Sealed (BK with BK Terminal Position Assurance Lock)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Core Crimp Insulation Crimp
I 13575575 J-35616-64B (L-BU) J-38125-213 33467-0005 23 J J
II SEALED: 13576392 UNSEALED: 13575797 J-35616-35 (VT) J-38125-11A 7116-4152-02 9 2 5
K20 Engine Control Module X2 (LFW or LFX)

Pin Size Color Circuit Function Terminal Type ID Option
1-2 - - - Not Occupied - -
3 0.5 TN 808 Low Reference I -
4-7 - - - Not Occupied - -
8 0.5 PU/WH 821 Vehicle Speed Sensor I VSS) High Signal (MV7
9 - - - Not Occupied - -
10 0.5 PU/WH 3110 Reference Voltage - Bank 1 Sensor 1 I -
11 0.5 PU/WH 3210 HO2S Reference Voltage - Bank 2 Sensor 1 I -
12 0.5 PU 3120 HO2S High Signal - Bank 1 Sensor 2 I -
13 0.5 PU 3220 HO2S High Signal - Bank 2 Sensor 2 I -
14-15 - - - Not Occupied - -
16 0.5 BN 582 TAC Motor Control - 2 I -
17 - - - Not Occupied - -
18 0.5 GY 598 5-Volt Reference 1 I -
19 0.5 YE 2918 Fuel Rail Pressure (FRP) Sensor Signal I -
20-22 - - - Not Occupied - -
23 0.5 L-GN 5007 Backup Lamp Switch Signal I -
24-25 - - - Not Occupied - -
26 0.5 TN/WH 3111 Low Reference - Bank 1 Sensor 1 I -
27 0.5 TN/WH 3211 HO2S Low Signal - Bank 2 Sensor 1 I -
28 0.5 TN/WH 3121 Low Reference - Bank 1 Sensor 2 I -
29 0.5 TN 3221 Low Reference - Bank 2 Sensor 2 I -
30-31 - - - Not Occupied - -
32 0.5 YE 581 TAC Motor Control - 1 I -
33 0.5 D-GN 485 TP Sensor 1 Signal I -
34 0.5 GY 2701 5-Volt Reference 4 I -
35 0.5 PU 486 TP Sensor 2 Signal I -
36 0.5 D-BU 496 Knock Sensor (KS) 1 Signal I -
37 0.5 L-BU 1876 Knock Sensor (KS) 2 Signal I -
38-40 - - - Not Occupied - -
41 0.5 GY/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1 I -
42 0.5 GY/WH 3122 HO2S Heater Low Control - Bank 1 Sensor 2 I -
43 0.5 L-GN 432 MAP Sensor Signal I -
44 0.5 GY 2704 5-Volt Reference 3 I -
45-48 - - - Not Occupied - -
49 0.5 L-BU 6289 Intake Air Temperature (IAT) Sensor Signal I -
50 - - - Not Occupied - -
51 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control I -
52 0.5 YE 492 MAF Sensor Signal I -
53 0.5 OG 225 Generator Turn On Signal I -
54 0.5 TN 2752 Low Reference I -
55 0.5 GY 23 Generator Field Duty Cycle Signal I -
56 0.5 GY 1716 Low Reference I -
57 0.5 GY 2303 Low Reference I -
58 0.5 OG/BK 1786 Transmission Park/Neutral Signal I -
59-60 - - - Not Occupied - -
61 0.5 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1 I -
62 0.5 OG/WH 3223 HO2S Heater Low Control - Bank 2 Sensor 2 I -
63 0.5 OG/BK 469 Low Reference I -
64-68 - - - Not Occupied - -
69 0.5 TN 2760 Low Reference I -
70-72 - - - Not Occupied - -
73 2 BK/WH 1551 Ground II -
RENDER: 1.0x

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When to See a Mechanic

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.