K20 Engine Control Module X1 (LFX)

WARNING: This page is about a different car, the 2013 Cadillac XTS. However, it is still accessible from the selected car via links, so may be relevant.

Connector Part Information

Harness Type: Engine
OEM Connector: 34566-3963
Service Connector: 19299786
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	Core Crimp	Insulation Crimp
I	13575575	J-35616-64B (L-BU)	J-38125-213	33467-0005	23	J	J
II	13575797	J-35616-35 (VT)	J-38125-11A	7116-4152-02	9	A	5

K20 Engine Control Module X1 (LFX)

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1-3	-	-	-	Not Occupied	-	-
4	0.5	YE/WH	3200	Throttle Inlet Absolute Pressure Sensor Signal	I	-
5	0.5	WH/RD	3201	Throttle Inlet Absolute Pressure Sensor 5V Reference	I	-
6	0.5	L-GN	380	A/C Refrigerant Pressure Sensor Signal	I	-
7-8	-	-	-	Not Occupied	-	-
9	0.5	L-BU/WH	890	Fuel Tank Pressure Sensor Signal	I	-
10	0.5	YE/RD	2709	Fuel Tank Pressure Sensor 5 Volt Reference	I	-
11-13	-	-	-	Not Occupied	-	-
14	0.5	WH/RD	1164	Accelerator Pedal Position 5 Volt Reference (1)	I	-
15	0.5	YE/WH	1161	Accelerator Pedal Position Signal (1)	I	-
16-20	-	-	-	Not Occupied	-	-
21	0.5	BN/RD	2700	A/C Pressure Sensor 5 Volt Reference	I	-
22	0.5	BK/BN	5514	A/C Refrigerant Pressure Sensor Low Reference	I	-
23-24	-	-	-	Not Occupied	-	-
25	0.5	L-BU/VT	1589	Primary Fuel Level Sensor Signal	I	-
26	0.5	BK/L-GN	6281	Fuel Level Sensor Low Reference	I	-
27	0.5	L-BU/WH	1937	Secondary Fuel Level Sensor Signal	I	-
28-29	-	-	-	Not Occupied	-	-
30	0.5	BK/L-BU	1271	Accelerator Pedal Position Low Reference (1)	I	-
31	-	-	-	Not Occupied	-	-
32	0.5	WH/GY	459	A/C Compressor Clutch Relay Control	I	-
33	0.5	BN/RD	1274	Accelerator Pedal Position 5 Volt Reference (2)	I	-
34	0.5	L-GN/WH	1162	Accelerator Pedal Position Signal (2)	I	-
35-37	-	-	-	Not Occupied	-	-
38	0.5	WH	1579	Fuel Temperature/Composition Signal	I	-
39	0.5	L-BU	2500	High Speed GMLAN Serial Data (+) (1)	I	-
40	0.5	WH	2501	High Speed GMLAN Serial Data (-) (1)	I	-
41	-	-	-	Not Occupied	-	-
42	0.5	BN/YE	473	High Speed Cooling Fan Relay Control	I	-
43	-	-	-	Not Occupied	-	-
44	0.5	L-GN/GY	465	Fuel Pump Primary Relay Control	I	-
45	-	-	-	Not Occupied	-	-
46	0.5	BN/WH	419	Check Engine Indicator Control	I	-
47	0.5	WH/RD	5381	Brake Position Sensor 5 Volt Reference	I	-
48	0.5	WH/L-GN	5380	Brake Position Sensor Signal	I	-
49-50	-	-	-	Not Occupied	-	-
51	0.5	VT/L-GN	439	Run/Crank Ignition 1 Voltage	I	-
52	0.5	RD/BN	440	Battery Positive Voltage	I	-
53	0.5	BK/VT	1272	Accelerator Pedal Position Low Reference (2)	I	-
54-56	-	-	-	Not Occupied	-	-
57	0.5	WH/L-BU	6311	Cruise/ETC/TCC Brake Signal	I	-
58	-	-	-	Not Occupied	-	-
59	0.5	L-GN/VT	335	Low Speed Cooling Fan Relay Control	I	-
60-61	-	-	-	Not Occupied	-	-
62	0.5	VT/L-BU	5291	Powertrain Main Relay Fused Supply (2)	I	-
63	0.5	YE/BK	625	Starter Enable Relay Control	I	-
64-65	-	-	-	Not Occupied	-	-
66	0.5	WH	1310	EVAP Canister Vent Solenoid Control	I	-
67	0.5	VT/L-BU	5292	Powertrain Main Relay Fused Supply (3)	I	-
68	0.5	BK/YE	5382	Brake Position Sensor Low Reference	I	-
69	-	-	-	Not Occupied	-	-
70	0.5	VT/YE	5985	Accessory Wakeup Serial Data	I	-
71	-	-	-	Not Occupied	-	-
72	0.5	YE	5991	Powertrain Relay Coil Control	I	-
73	2.5	VT/L-BU	5290	Powertrain Main Relay Fused Supply (1)	II	-