K20 Engine Control Module X1 (LGX)

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. 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: 34566-1503
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
I	135877518	J-35616-64B (LT BU)	J-38125-215A
II	19351723	J-35616-35 (VT)	J-38125-215A

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1 - 3	-	-	-	Not Occupied	-	-
4	0.5	WH	4499	High Speed GMLAN Serial Data [-] 7	I	-
5	0.35	BK / VT	1272	Accelerator Pedal Position Low Reference 2	I	-
6	0.35	YE / WH	1161	Accelerator Pedal Position Signal 1	I	-
7	0.35	BK / BU	1271	Accelerator Pedal Position Low Reference 1	I	-
8	0.5	WH	7494	High Speed GMLAN Serial Data [-] 3	I	-
9	0.35	BK / YE	5382	Brake Position Sensor Low Reference	I	-
10 - 11	-	-	-	Not Occupied	-	-
12	0.5	WH	2501	High Speed GMLAN Serial Data [-] 1	I	-
13	0.35	WH / BU	6311	Cruise/ETC/TCC Brake Signal	I	-
14	0.35	WH / GY	459	A/C Compressor Clutch Relay Control	I	-
15	0.5	YE	5991	Powertrain Relay Coil Control	I	-
16	0.35	BN / WH	419	Check Engine Indicator Control	I	-
17	0.35	WH	2368	Cooling Fan Control Signal	I	-
18 - 19	-	-	-	Not Occupied	-	-
20	0.5	BU / BN	4498	High Speed GMLAN Serial Data [+] 7	I	-
21	0.35	BN / RD	1274	Accelerator Pedal Position 5V Reference 2	I	-
22	0.35	GN / WH	1162	Accelerator Pedal Position Signal 2	I	-
23	0.35	WH / RD	1164	Accelerator Pedal Position 5V Reference 1	I	-
24	0.5	BU / BK	7493	High Speed GMLAN Serial Data [+] 3	I	-
25	0.35	WH / RD	5381	Brake Position Sensor 5V Reference	I	-
26	0.35	WH / GN	5380	Brake Position Sensor Signal	I	-
27	-	-	-	Not Occupied	-	-
28	0.5	BU	2500	High Speed GMLAN Serial Data [+] 1	I	-
29	-	-	-	Not Occupied	-	-
30	0.5	GN / WH	492	Mass Air Flow Sensor Signal	I	-
31	0.35	YE / BK	625	Starter Enable Relay Control	I	-
32 - 33	-	-	-	Not Occupied	-	-
34	0.35	GY	5127	After Boil Heater Relay Control	I	-
35 - 38	-	-	-	Not Occupied	-	-
39	0.5	BN / GY	4008	Humidity Sensor Signal	I	-
40	0.5	YE / BU	4171	Transmission Position Sensor A 9V Reference	I	-
41 - 43	-	-	-	Not Occupied	-	-
44	0.5	BK / GN	580	Engine Control Sensors Low Reference 2	I	-
45	0.35	YE / RD	6031	Brake Vacuum Sensor 5V Reference	I	-
46	-	-	-	Not Occupied	-	-
47	0.35	BN / RD	2700	A/C Pressure Sensor 5V Reference	I	-
48	-	-	-	Not Occupied	-	-
49	0.5	VT / BU	5292	Powertrain Main Relay Fused Supply 3	I	-
50	0.5	VT / BU	5291	Powertrain Main Relay Fused Supply 2	I	-
51	0.5	VT / YE	5985	Accessory Wake-Up Serial Data	I	-
52	0.5	RD / WH	140	Battery Positive Voltage	I	-
53 - 55	-	-	-	Not Occupied	-	-
56	0.35	YE	4063	Hood Status A Signal	I	-
57 - 59	-	-	-	Not Occupied	-	-
60	0.5	WH / BU	5726	Ignition Mode Switch Mode Control Backup	I	-
61 - 63	-	-	-	Not Occupied	-	-
64	0.5	BU / GY	636	Outside Ambient Air Temperature Sensor Signal	I	-
65	0.35	YE / VT	6030	Brake Vacuum Sensor Signal	I	-
66	-	-	-	Not Occupied	-	-
67	0.35	GN	380	A/C Refrigerant Pressure Sensor Signal	I	-
68	-	-	-	Not Occupied	-	-
69	0.35	GN / GY	465	Fuel Pump Primary Relay Control	I	-
70	0.35	YE / VT	4325	Starter Pinion Solenoid Relay Control	I	-
71	0.5	VT / GN	439	Run/Crank Ignition 1 Voltage	I	-
72	0.75	VT / BU	5292	Powertrain Main Relay Fused Supply 3	I	-
73	2.5	VT / BU	5290	Powertrain Main Relay Fused Supply 1	II	-