K20 Engine Control Module X1 (LTG)

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-38125-215A
II	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	LTG+(M3H/M3D)
10	0.5	WH	2501	High Speed GMLAN Serial Data [-] 1	I	LTG+(M3H/M3D)
11	0.5	BN / RD	1274	Accelerator Pedal Position 5V Reference 2	I	LTG
12	0.5	WH / RD	1164	Accelerator Pedal Position 5V Reference 1	I	LTG
13	0.5	VT / YE	5985	Accessory Wake-Up Serial Data	I	LTG
14	0.5	VT / GN	439	Run/Crank Ignition 1 Voltage	I	LTG
15	0.5	RD / WH	140	Battery Positive Voltage	I	LTG
16	0.5	VT	5292	Powertrain Main Relay Fused Supply Voltage 3	I	LTG
17	0.5	YE	5530	Hood Open Switch Signal	I	KL9+LTG
18	0.5	GY / RD	3053	Turbocharger Intake Pressure Sensor High Reference Bank 1	I	LTG
19 - 22	-	-	-	Not Occupied	-	-
23	0.5	BK / GY	3927	Transmission Internal Mode Switch Feedback Signal	I	LTG+M3D
24	-	-	-	Not Occupied	-	-
25	0.5	BK / YE	5382	Brake Position Sensor Low Reference	I	LTG
26	-	-	-	Not Occupied	-	-
27	0.5	BK / VT	1272	Accelerator Pedal Position Low Reference 2	I	LTG
28	0.5	BK / BU	1271	Accelerator Pedal Position Low Reference 1	I	LTG
29 - 31	-	-	-	Not Occupied	-	-
32	0.5	YE / VT	6030	Brake Vacuum Sensor Signal	I	KL9+LTG
33	0.5	GN / WH	1162	Accelerator Pedal Position Signal 2	I	LTG
34	0.5	GN / WH	492	Mass Air Flow Sensor Signal	I	LTG
35 - 36	-	-	-	Not Occupied	-	-
37	0.5	BN / RD	2700	A/C Pressure Sensor 5V Reference	I	LTG
38	0.5	GY	4109	Driver Mode Switch 5V Reference	I	LTG+(F48/EPH)
39	0.5	YE / BU	4171	Transmission Input Shaft Speed Sensor Circuit 9V Reference	I	LTG+M3D
40	-	-	-	Not Occupied	-	-
41	0.5	WH / RD	5381	Brake Position Sensor 5V Reference	I	LTG
42 - 43	-	-	-	Not Occupied	-	-
44	0.5	YE / BK	625	Starter Enable Relay Control	I	KL9+LTG
45	0.5	YE / WH	1161	Accelerator Pedal Position Signal 1	I	LTG
46	-	-	-	Not Occupied	-	-
47	0.5	BU / GY	636	Ambient Air Temperature Sensor Signal	I	LTG
48	0.5	WH / BU	6289	Intake Air Temperature Sensor Signal	I	LTG
49	-	-	-	Not Occupied	-	-
50	0.5	WH / BU	6311	Cruise/ETC/TCC Brake Signal	I	LTG
51	0.5	VT / BU	5291	Powertrain Main Relay Fused Supply Voltage 2	I	LTG
52 - 53	-	-	-	Not Occupied	-	-
54	0.5	WH / GY	459	A/C Compressor Clutch Relay Control	I	LTG
55 - 56	-	-	-	Not Occupied	-	-
57	0.5	GN	380	A/C Refrigerant Pressure Sensor Signal	I	LTG
58	0.5	WH / VT	4108	Driver Mode Switch Signal	I	LTG+(F48/EPH)
59	0.5	WH / BU	5726	Ignition Mode Switch Mode Control Backup	I	LTG+M3D
60	0.5	BN / GY	4008	Humidity Sensor Signal	I	LTG
61	0.5	WH / GN	5380	Brake Position Sensor Signal	I	LTG
62 - 63	-	-	-	Not Occupied	-	-
64	0.5	GN / GY	465	Fuel Pump Primary Relay Control	I	LTG
65 - 66	-	-	-	Not Occupied	-	-
67	0.5	YE	5991	Powertrain Relay Coil Control	I	LTG
68 - 69	-	-	-	Not Occupied	-	-
70	0.5	YE / VT	4325	Starter Pinion Solenoid Actuator Relay Control	I	KL9+LTG
71 - 72	-	-	-	Not Occupied	-	-
73	2	VT / BU	5290	Powertrain Main Relay Fused Supply Voltage 1	II	LTG