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Home >> Cadillac >> 2007 >> STS Base, 4.6 A, RWD >> Repair and Diagnosis >> Quick Lookups >> Wiring Diagrams >> OEM Connector End Views - Cruise Control, Electronic Suspension Control, Engine Control Module, Engine Controls, Horn, Theft Deterrent System, Shift Lock Control, Steering Assist, Engine Electrical, Automatic Level Control >> Engine Control Module Connector End Views >> Engine Control Module (ECM) Connector End View C2
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Engine Control Module (ECM) Connector End View C2

Fig 1: Engine Control Module (ECM) C2 Connector End View
GM1331454Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C2 Connector Parts Information

Connector Part Information 
  • OEM: 1928403386
  • Service: 88956567
  • Description: 64-Way F Unknown (BK)
Terminal Part Information 
  • Pins: 1, 2, 3, 17, 18, 33, 39, 4, 7, 8, 9, 10, 11, 12, 19, 20, 22, 23, 24, 25, 26, 27, 29, 32, 35, 36, 40, 41, 42, 43, 44, 49, 50, 55, 56, 57, 58, 60, 61
  • Terminal/Tray: 1928498016/17
  • Core/Insulation Crimp: Pins 1, 2, 3, 17, 18, 33, 39 - See Terminal Repair Kit
  • Core/Insulation Crimp: Pins 4, 7, 8, 9, 10, 11, 12, 19, 20, 22, 23, 24, 25, 26, 27, 29, 32, 35, 36, 40, 41, 42, 43, 44, 49, 50, 55, 56, 57, 58, 60, 61 - N/N
  • Release Tool/Test Probe: J-38125-560/J-35616-64B (L-BU)
Engine Control Module (ECM) C2 Connector End View

Pin Wire Color Circuit No. Function
1 PK/BK 5290 Engine Main Relay Fused Control (1)
2 BK/WH 3122 Oxygen Sensor Heater Control Low - Front
3 PK 239 Run/Crank Ignition 1 Voltage
4 D-BU 473 High Speed Cooling Fan Relay Control
5-6 - - Not Used
7 WH/BK 1164 Electronic Throttle - Pedal Position 5-Volt Ref 1
8 PU 1272 Electronic Throttle - Pedal Position 2
9 OG/BK 380 Air Conditioning Refrigerant Pressure Sensor Signal
10 WH 17 Stop Lamp Switch Signal
11 TN 472 Manifold Absolute Temperature Sensor Signal
12 D-GN 890 Fuel Tank Pressure Sensor Signal
13-16 - - Not Used
17 PK/BK 5290 Engine Main Relay Fused Control (1)
18 RD/WH 3223 Oxygen Sensor Signal - Bank 2 Sensor 2 Heater Control Low
19 D-GN/WH 465 Fuel Pump Primary Relay Control
20 D-GN 335 Low Speed Cooling Fan Relay Control
21 - - Not Used
22 BN 818 Vehicle Speed Signal
23 TN/BK 2500 High Speed GMLAN Serial Data (+) (1)
24 BN 5069 Engine Main Relay Coil Control
25 BK 452 Sensor Return
26 BK 2760 Sensor Return - Induction Air Temperature
27 L-BU 1937 Fuel Gage Sensor Signal - Right
28 - - Not Used
29 PU/WH 1668 Heated Oxygen Sensor High Signal Bank 1 Sensor (2)
30-31 - - Not Used
32 OG/BK 1786 Transmission Park/Neutral Signal
33 WH 1310 Canister Vent Valve Solenoid Output
34 - - Not Used
35 YE 447 Starter Relay Coil Control
36 RD/WH 1440 Battery Positive Voltage
37-38 - - Not Used
39 GY 596 Reference Voltage Feed - 5-Volt Reference
40 BN 1271 Electronic Throttle - Pedal Position Return 1
41 TN 1671 Heated Oxygen Sensor Low Signal Bank 2 Sensor (2)
42 D-BU 1936 Fuel Gage Sensor Signal - Left
43 YE 492 Mass Air Flow Signal
44 L-BU 1162 Electronic Throttle - Pedal Position Signal 2
45-48 - - Not Used
49 D-GN/WH 459 A/C Compressor Clutch Relay Control
50 BN/WH 419 Check Engine Indicator Lamp Output
51-54 - - Not Used
55 TN 2501 High Speed GMLAN Serial Data (-) (1)
56 TN 1274 Electronic Throttle - Pedal Position 5-Volt Ref 2
57 TN/WH 1669 Oxygen Sensor Return - Left - Rear of Catalytic Converter
58 YE/BK 5728 ECM/TCM Serial Data Wake Up
59 - - Not Used
60 D-BU 1161 Electronic Throttle - Pedal Position Signal 1
61 PU 1670 Heated Oxygen Sensor High Signal Bank 2 Sensor (2)
62-64 - - Not Used
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