K20 Engine Control Module X3 (LFW or LFX)

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

Connector Part Information

Harness Type: Engine
OEM Connector: 12582678
Service Connector: 88988372
Description: 73-Way F MX123 34566 Series (BK with GY Terminal Position Assurance Lock)

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	13575575	J-35616-64B (L-BU)	J-38125-213	33467-0005	23	K	K
III	SEALED: 13576392 UNSEALED: 13575797	J-35616-35 (VT)	J-38125-11A	7116-4152-02	9	2	5

K20 Engine Control Module X3 (LFW or LFX)

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1	0.5	TN/WH	331	Oil Pressure Sensor Signal	I	-
2	0.5	GY	596	5-Volt Reference 1	I	-
3-7	-	-	-	Not Occupied	-	-
8	0.5	YE	410	Engine Coolant Temperature (ECT) Sensor Signal	I	-
9	-	-	-	Not Occupied	-	-
10	0.5	GY	605	5-Volt Reference2	I	-
11-12	-	-	-	Not Occupied	-	-
13	0.5	L-BU/WH	2126	IC 6 Control	I	-
14	0.5	D-GN	2125	IC 5 Control	I	-
15	0.5	BN/WH	2130	Low Reference	I	-
16	0.75	YE	7301	High Pressure Fuel Pump Actuator Solenoid Control	II	-
17	0.5	TN	470	Low Reference	I	-
18-23	-	-	-	Not Occupied	-	-
24	0.5	TN	476	Low Reference	I	-
25	0.5	TN	452	Low Reference	I	-
26	0.5	YE	573	CKP Sensor Signal	I	-
27	0.5	D-GN/WH	2124	IC 4 Control	I	-
28	0.5	L-BU	2123	IC 3 Control	I	-
29	0.5	OG/WH	2122	IC 2 Control	I	-
30	0.5	PU	2121	IC 1 Control	I	-
31	0.5	BN	2129	Low Reference	I	-
32	0.75	PU	7300	High Pressure Fuel Pump Actuator Low Control	II	-
33	0.5	OG	5275	CMP Sensor Signal	I	-
34	0.5	D-BU	5300	5-Volt Reference 1	I	-
35	0.5	D-GN	5273	CMP Sensor Signal Exhaust - Bank 1	I	-
36	0.5	YE	5276	CMP Sensor Signal Intake - Bank 2	I	-
37	0.5	L-BU	5302	5-Volt Reference 1	I	-
38	0.5	PU	5274	CMP Sensor Signal Exhaust - Bank 2	I	-
39	0.5	PU	5284	Low Reference	I	-
40	0.5	L-GN	5282	Low Reference	I	-
41	0.5	OG/BK	5272	CMP Actuator Solenoid Control - Intake Bank 2	I	-
42	0.5	WH/BK	5283	CMP Actuator Solenoid Control - Exhaust Bank 2	I	-
43-45	-	-	-	Not Occupied	-	-
46	0.75	BU	4804	Low Reference	II	-
47	0.75	GN	4805	Low Reference	II	-
48	0.75	BU	4802	Low Reference	II	-
49	-	-	-	Not Occupied	-	-
50	0.75	GN	4803	Low Reference	II	-
51	0.75	PU	4806	Low Reference	II	-
52	0.75	BN	4801	Low Reference	II	-
53	0.5	TN	5301	Low Reference	I	-
54	0.5	YE/BK	5297	5-Volt Reference 1	I	-
55	0.5	GY	5296	Low Reference	I	-
56	0.5	BN/WH	5303	Low Reference	I	-
57	0.5	L-GN	5298	5-Volt Reference 1	I	-
58	0.5	BN	5299	Low Reference	I	-
59	0.5	BN	6753	Low Reference	I	-
60	0.5	BN/WH	6754	Low Reference	I	-
61	0.5	D-BU	6755	Low Reference	I	-
62	0.5	D-BU/WH	6756	Low Reference	I	-
63-65	-	-	-	Not Occupied	-	-
66	0.75	BU/WH	4904	Fuel Injector 4 Control	II	-
67	0.75	GN/WH	4905	Fuel Injector 5 Control	II	-
68	0.75	BU/WH	4902	Fuel Injector 2 Control	II	-
69	-	-	-	Not Occupied	-	-
70	0.75	GN/WH	4903	Fuel Injector 3 Control	II	-
71	0.75	PU/WH	4906	Fuel Injector 6 Control	II	-
72	0.75	BN/WH	4901	Fuel Injector 1 Control	II	-
73	2	BK/WH	1551	Ground	III	-