K20 Engine Control Module X1 (LYX+E80+NTM)

WARNING: This page is about a different car, the 2021 GMC Terrain and 2021 Chevrolet Equinox. 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 Harness
OEM Connector: 34566-0303
Service Connector: 13574782
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	19354746	J-35616-64B (LT BU)	J-38125-213
II	Not Available	No Tool Required	Not Available
III	Pending	J-35616-35 (VT)	J-38125-11A

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1 - 4	-	-	-	Not Occupied	-	-
5	0.5	BU / BN	4498	High Speed GMLAN Serial Data [+] 7	I	(LTG/LYX)-NUG
6	0.5	WH	4499	High Speed GMLAN Serial Data [-] 7	I	(LTG/LYX)-NUG
7	0.5	WH	7494	High Speed GMLAN Serial Data [-] 3	I	KL9+(LYX/LTG)-EPH-NUG
8	0.5	BU / BK	7493	High Speed GMLAN Serial Data [+] 3	I	KL9+(LYX/LTG)-EPH-NUG
9	0.5	BU	2500	High Speed GMLAN Serial Data [+] 1	I	LYX+(MNH/MNK)-NUG
10	0.5	WH	2501	High Speed GMLAN Serial Data [-] 1	I	LYX+(MNH/MNK)-NUG
11	0.5	BN / RD	1274	Accelerator Pedal Position 5V Reference 2	I	E80+LYX
12	0.5	WH / RD	1164	Accelerator Pedal Position 5V Reference 1	I	E80+LYX
13	0.5	VT / YE	5985	Accessory Wake-Up Serial Data	I	E80+LYX
14	0.5	VT / GN	439	Run/Crank Ignition 1 Voltage	I	E80+LYX
15	0.5	RD / WH	140	Battery Positive Voltage	I	E80+LYX
16	0.5	VT	5292	Powertrain Main Relay Fused Supply Voltage 3	I	E80+LYX
17	0.5	YE	5530	Hood Open Switch Signal	I	E80+KL9+LYX
18	0.5	GY / RD	3053	Turbocharger Intake Pressure Sensor High Reference Bank 1	I	E80+LYX
19 - 24	-	-	-	Not Occupied	-	-
25	0.5	BK / YE	5382	Brake Position Sensor Low Reference	I	E80+LYX
26	-	-	-	Not Occupied	-	-
27	0.5	BK / VT	1272	Accelerator Pedal Position Low Reference 2	I	E80+LYX
28	0.5	BK / BU	1271	Accelerator Pedal Position Low Reference 1	I	E80+LYX
29 - 31	-	-	-	Not Occupied	-	-
32	0.5	YE / VT	6030	Brake Vacuum Sensor Signal	I	E80+KL9+LYX
33	0.5	GN / WH	1162	Accelerator Pedal Position Signal 2	I	E80+LYX
34	0.5	GN / WH	492	Mass Air Flow Sensor Signal	I	E80+LYX
35 - 36	-	-	-	Not Occupied	-	-
37	0.5	BN / RD	2700	A/C Pressure Sensor 5V Reference	I	E80+LYX
38	0.5	GY	4109	Driver Mode Switch 5V Reference	I	E80+LYX+(F48/EPH)
39 - 40	-	-	-	Not Occupied	-	-
41	0.5	WH / RD	5381	Brake Position Sensor 5V Reference	I	E80+LYX
42 - 43	-	-	-	Not Occupied	-	-
44	0.5	YE / BK	625	Starter Enable Relay Control	I	-
45	0.5	YE / WH	1161	Accelerator Pedal Position Signal 1	I	E80+LYX
46	-	-	-	Not Occupied	-	-
47	0.5	BU / GY	636	Ambient Air Temperature Sensor Signal	I	E80+LYX
48	0.5	WH / BU	6289	Intake Air Temperature Sensor Signal	I	E80+LYX
49	0.5	WH / GY	1786	Transmission Park/Neutral Signal 1	I	E80+LYX-M3U
50	0.5	WH / BU	6311	Cruise/ETC/TCC Brake Signal	I	E80+LYX
51	0.5	VT / BU	5291	Powertrain Main Relay Fused Supply Voltage 2	I	E80+LYX
52 - 53	-	-	-	Not Occupied	-	-
54	0.5	WH / GY	459	A/C Compressor Clutch Relay Control	I	E80+LYX
55 - 56	-	-	-	Not Occupied	-	-
57	0.5	GN	380	A/C Refrigerant Pressure Sensor Signal	I	E80+LYX
58	0.5	WH / VT	4108	Driver Mode Switch Signal	I	E80+LYX+(F48/EPH)
59	-	WH / BU	5726	Ignition Mode Switch Mode Control Backup	II	-
60	0.5	BN / GY	4008	Humidity Sensor Signal	I	E80+LYX
61	0.5	WH / GN	5380	Brake Position Sensor Signal	I	E80+LYX
62 - 63	-	-	-	Not Occupied	-	-
64	0.5	GN / GY	465	Fuel Pump Primary Relay Control	I	E80+LYX
65	-	-	-	Not Occupied	-	-
66	0.5	GY	5127	Turbocharger Coolant Pump Relay Control	I	E80+LYX+(MAH/MBC/MCX)
67	0.5	YE	5991	Powertrain Relay Coil Control	I	E80+LYX
68 - 69	-	-	-	Not Occupied	-	-
70	0.5	YE / VT	4325	Starter Pinion Solenoid Actuator Relay Control	I	E80+KL9+LYX
71	0.5	BN / WH	419	Check Engine Indicator Control	I	E80+LYX+(NTB/NUB)
72	-	-	-	Not Occupied	-	-
73	2	VT / BU	5290	Powertrain Main Relay Fused Supply Voltage 1	III	E80+LYX