K20 Engine Control Module X3 (LSA)

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: 34566-0203
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	13575811	J-35616-64B (L-BU)	J-38125-213	33467-0003	23	H	H
III	13575575	J-35616-64B (L-BU)	J-38125-213	33467-0005	23	K	K
IV	Pending	J-35616-35 (VT)	J-38125-11A	7116-4152-02	9	A	5

K20 Engine Control Module X3 (LSA)

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1-2	-	-	-	Not Occupied	-	-
3	0.5	TN	1667	HO2S Low Signal - Bank 2 Sensor 1	I	-
4	0.5	PU	1666	HO2S High Signal - Bank 2 Sensor 1	I	-
5	0.5	PU	1670	HO2S High Signal - Bank 2 Sensor 2	I	-
6	0.5	TN	1671	HO2S Low Signal - Bank 2 Sensor 2	I	-
7	0.5	OG	225	Generator Turn On Signal	I	-
8	0.5	L-GN	1652	Reverse Lockout Solenoid Signal	I	MG9
9-12	-	-	-	Not Occupied	-	-
13	0.5	GY	587	Skip Shift Signal	I	MG9
14	0.35	L-BU	7126	Super Charger Vacuum Bypass Valve Control	II	-
15	0.5	L-GN	3212	HO2S Heater Low Control - Bank 2 Sensor 1	I	-
16	0.5	PK	2014	Charge Air Cooler Coolant Pump Control	I	-
17	-	-	-	Not Occupied	-	-
18	0.8	BN	1174	Oil Level Switch Signal	I	-
19-20	-	-	-	Not Occupied	-	-
21	0.5	TN	5514	A/C Refrigerant Pressure Sensor Low Reference	I	-
22	0.8	OG/BK	6014	Barometric Pressure Sensor Low Reference	III	-
23	0.8	OG/BK	469	Manifold Absolute Pressure Sensor Low Reference	III	-
24-26	-	-	-	Not Occupied	-	-
27	0.5	OG/D-GN	7360	Manual Transmission Clutch Position Sensor Return	I	MG9
28	-	-	-	Not Occupied	-	-
29	0.5	GY	23	Generator Field Duty Cycle Signal	I	-
30-32	-	-	-	Not Occupied	-	-
33	0.5	TN	2501	High Speed GMLAN Serial Data Bus-	I	-
34	0.5	TN	470	Sensor Low Reference	I	-
35	0.8	TN	2761	Coolant Temperature Sensor Low Reference	III	-
36	0.8	YE/BK	6120	Manifold Air Temperature Sensor Low Reference	III	-
37	0.5	GY	2700	A/C Pressure Sensor 5 Volt Reference	I	-
38	0.8	WH/BK	2932	Barometric Pressure Sensor (5) Volt Reference	III	-
39	0.8	GY	2704	Manifold Absolute Pressure Sensor 5 Volt Reference	III	-
40-42	-	-	-	Not Occupied	-	-
43	0.5	D-BU/YE	7361	Manual Transmission Clutch Position Sensor Supply	I	MG9
44	-	-	-	Not Occupied	-	-
45	0.35	L-GN	5007	Backup Lamp Switch Signal	II	MG9
46	0.5	OG/BK	1786	Ignition Lock Cylinder Control Actuator Signal	I	MYD
47	-	-	-	Not Occupied	-	-
48	0.5	D-GN/WH	428	EVAP Canister Purge Solenoid Control	I	-
49	0.5	D-GN	335	Low Speed Cooling Fan Relay Control	I	-
50	0.5	OG/WH	3223	HO2S Heater Low Control - Bank 2 Sensor 2	I	-
51-52	-	-	-	Not Occupied	-	-
53	0.5	TN/BK	2500	High Speed GMLAN Serial Data Bus+	I	-
54	-	-	-	Not Occupied	-	-
55	0.8	YE	410	Engine Coolant Temperature Sensor Signal	III	-
56	0.8	L-BU	6118	Manifold Air Temperature Sensor Signal	III	-
57	0.5	OG/BK	380	A/C Refrigerant Pressure Sensor Signal	I	-
58	0.8	GY/BK	433	Barometric Pressure Sensor Signal	III	-
59	0.8	L-GN	432	Manifold Absolute Pressure Sensor Signal	III	-
60-62	-	-	-	Not Occupied	-	-
63	0.5	L-GN	6338	Manual Transmission Clutch Position Sensor Signal Position	I	MG9
64-65	-	-	-	Not Occupied	-	-
66	0.35	YE	400	Vehicle Speed Sensor Signal	II	-
67	0.35	PU	401	Vehicle Speed Sensor Low Reference	II	-
68-72	-	-	-	Not Occupied	-	-
73	3.0	BK	1550	Ground	IV	-