K20 Engine Control Module X1 (LT4)

WARNING: This page is about a different car, the 2018 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

Connector Part Information

Harness Type: Engine
OEM Connector: 12615655
Service Connector: 13574946
Description: 73-Way F 0.64, 2.8 Series, Sealed (BK with BU Terminal Position Assurance)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool	Service Terminal	Tray Name	Core Crimp	Insulation Crimp
I	19330179	J-35616-64B (LT BU)	J-38125-12A	Not Available	Not Available	Not Available	Not Available
II	19368324	J-35616-4A (PU)	J-38125-11A	7116-4152-02	Yazaki 9	A	5

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1	0.5	BK/YE	6014	Barometric Pressure Sensor Low Reference	I	LT4
2	0.5	BU/WH	7446	Fuel Line Pressure Sensor Signal	I	G96+LT4
3	-	-	-	Not Occupied	-	-
4	0.5	BN	7123	Super Charger Inlet Air Pressure Sensor Signal	I	LT4
5	0.5	YE/BK	7124	Super Charger Inlet Air Pressure Sensor Control 5V	I	LT4
6	0.5	GN	380	A/C Refrigerant Pressure Sensor Signal	I	LT4
7	0.5	YE	4063	Hood Status A Signal	I	LT4
8	0.5	BK/YE	7447	Fuel Line Pressure Sensor Low Reference	I	G96+LT4
9	0.5	BU/WH	890	Fuel Tank Pressure Sensor Signal	I	LT4
10	0.5	YE/RD	2709	Fuel Tank Pressure Sensor 5V Reference	I	LT4
11 - 12	-	-	-	Not Occupied	-	-
13	0.5	BN	7348	Induction Air Temperature Sensor 2 Signal	I	LT4
14	0.5	WH/RD	1164	Accelerator Pedal Position 5V Reference 1	I	LT4
15	0.5	YE/WH	1161	Accelerator Pedal Position Signal 1	I	LT4
16	-	-	-	Not Occupied	-	-
17	0.5	WH/RD	2932	Barometric Pressure Sensor 5V Reference	I	LT4
18 - 19	-	-	-	Not Occupied	-	-
20	0.5	BN/GN	7125	Super Charger Inlet Air Pressure Sensor Low Reference	I	LT4
21	0.5	BN/RD	2700	A/C Pressure Sensor 5V Reference	I	LT4
22	0.5	BK/BN	5514	A/C Refrigerant Pressure Sensor Low Reference	I	LT4
23	-	-	-	Not Occupied	-	-
24	0.5	BN/RD	7445	Fuel Line Pressure Sensor 5V Reference	I	G96+LT4
25	0.5	BU/VT	1589	Primary Fuel Level Sensor Signal	I	LT4
26	0.5	BK/GN	6281	Fuel Level Sensor Low Reference	I	LT4
27	0.5	BU/WH	1937	Secondary Fuel Level Sensor Signal	I	LT4
28 - 29	-	-	-	Not Occupied	-	-
30	0.5	BK/BU	1271	Accelerator Pedal Position Low Reference 1	I	LT4
31	-	-	-	Not Occupied	-	-
32	0.5	WH/GY	459	A/C Compressor Clutch Relay Control	I	LT4
33	0.5	BN/RD	1274	Accelerator Pedal Position 5V Reference 2	I	LT4
34	0.5	GN/WH	1162	Accelerator Pedal Position Signal 2	I	LT4
35	-	-	-	Not Occupied	-	-
36	0.5	BU/BK	7493	High Speed GMLAN Serial Data (+) 3	I	G96+LT4
37	0.5	WH	7494	High Speed GMLAN Serial Data (-) 3	I	G96+LT4
38	-	-	-	Not Occupied	-	-
39	0.5	BU	2500	High Speed GMLAN Serial Data (+) 1	I	M5U
40	0.5	WH	2501	High Speed GMLAN Serial Data (-) 1	I	M5U
41	0.5	BU/WH	2918	Fuel Rail Pressure Sensor Signal	I	LT4
42 - 43	-	-	-	Not Occupied	-	-
44	0.5	GN/GY	465	Fuel Pump Primary Relay Control	I	G96+LT4
45	-	-	-	Not Occupied	-	-
46	0.5	BN/WH	419	Check Engine Indicator Control	I	LT4
47	0.5	WH/RD	5381	Brake Position Sensor 5V Reference	I	LT4
48	0.5	WH/GN	5380	Brake Position Sensor Signal	I	LT4
49	0.5	GY	5127	After Boil Heater Relay Control	I	LT4
50	-	-	-	Not Occupied	-	-
51	0.5	VT/GN	439	Run/Crank Ignition 1 Voltage	I	-
52	0.5	RD/BN	440	Battery Positive Voltage	I	LT4
53	0.5	BK/VT	1272	Accelerator Pedal Position Low Reference 2	I	LT4
54 - 56	-	-	-	Not Occupied	-	-
57	0.5	WH/BU	6311	Cruise/ETC/TCC Brake Signal	I	LT4
58	-	-	-	Not Occupied	-	-
59	0.5	WH/BK	2366	Cooling Fan Control Relay Speed Signal	I	LT4
60 - 61	-	-	-	Not Occupied	-	-
62	0.5	VT/BU	5291	Powertrain Main Relay Fused Supply 2	I	LT4
63	0.5	YE/BK	625	Starter Enable Relay Control	I	LT4
64 - 65	-	-	-	Not Occupied	-	-
66	0.5	WH	1310	EVAP Canister Vent Solenoid Control	I	LT4
67	0.5	VT/BU	5292	Powertrain Main Relay Fused Supply 3	I	LT4
68	0.5	BK/YE	5382	Brake Position Sensor Low Reference	I	LT4
69	-	-	-	Not Occupied	-	-
70	0.5	VT/YE	5985	Accessory Wakeup Serial Data	I	LT4
71	-	-	-	Not Occupied	-	-
72	0.5	YE	5991	Powertrain Relay Coil Control	I	-
73	3	VT/BU	5290	Powertrain Main Relay Fused Supply 1	II	LT4