K20 Engine Control Module X3

WARNING: This page is about a different car, the 2015 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 0.64, 2.8 Series, Sealed (BK with GY 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	19301532	J-35616-16 (LT GN)	J-38125-213	Not Available	Not Available	Not Available	Not Available
II	13579770	J-35616-35 (VT)	J-38125-11A	Not Available	Not Available	Not Available	Not Available

Pin	Size	Color	Circuit	Function	Terminal Type ID	Option
1-2	-	-	-	Not Occupied	-	-
3	0.5	TN	1667	Heated Oxygen Sensor Low Signal Bank 2 Sensor (1)	I	LSA
4	0.5	VT	1666	Heated Oxygen Sensor High Signal Bank 2 Sensor (1)	I	LSA
5	0.5	VT	1670	Heated Oxygen Sensor High Signal Bank 2 Sensor (2)	I	LSA
6	0.5	TN	1671	Heated Oxygen Sensor Low Signal Bank 2 Sensor (2)	I	LSA
7	0.5	OG	225	Generator Turn On Signal	I	LSA
8	0.5	L-GN	1652	Reverse Lockout Solenoid Control	I	LSA and MG9
9-12	-	-	-	Not Occupied	-	-
13	0.5	GY	587	Skip/Shift Solenoid Control	I	LSA and MG9
14	0.5	L-BU	7126	Super Charger Vacuum Bypass Valve Control	I	LSA
15	0.5	L-GN	3212	Heated Oxygen Sensor Heater Low Control Bank 2 Sensor (1)	I	LSA
16	0.5	PK	2014	Coolant Pump Relay Coil Control	I	LSA
17	-	-	-	Not Occupied	-	-
18	0.8	BN	1174	Oil Level Switch Signal	I	LSA
19-20	-	-	-	Not Occupied	-	-
21	0.5	TN	5514	A/C Refrigerant Pressure Sensor Low Reference	I	LSA
22	0.8	OG/BK	6014	Barometric Pressure Sensor Low Reference	I	LSA
23	0.8	OG/BK	469	Manifold Absolute Pressure Sensor Low Reference	I	LSA
24-26	-	-	-	Not Occupied	-	-
27	0.5 0.5	OG/GN BK/YE	7360 5382	Manual Transmission Clutch Position Sensor Return Brake Position Sensor Low Reference	I	LSA and MG9 LSA and MYD
28	-	-	-	Not Occupied	-	-
29	0.5	GY	23	Generator Field Duty Cycle Signal	I	LSA
30-32	-	-	-	Not Occupied	-	-
33	0.5 0.5	TN TN	2501 2501	High Speed GMLAN Serial Data (-) (1) High Speed GMLAN Serial Data (-) (1)	I	LSA and MG9 LSA and MYD
34	0.5	TN	470	Sensor Low Reference	I	LSA
35	0.8	TN	2761	Coolant Temperature Sensor Low Reference	I	LSA
36	0.8	YE/BK	6120	Manifold Air Temperature Sensor Low Reference	I	LSA
37	0.5	GY	2700	A/C Pressure Sensor 5 Volt Reference	I	LSA
38	0.8	WH/BK	2932	Barometric Pressure Sensor (5) Volt Reference	I	LSA
39	0.8	GY	2704	Manifold Absolute Pressure Sensor 5 Volt Reference	I	LSA
40-42	-	-	-	Not Occupied	-	-
43	0.5 0.5	D-BU/WH WH/RD	7361 5381	Manual Transmission Clutch Position Sensor Supply Brake Position Sensor 5 Volt Reference	I	LSA and MG9 LSA and MYD
44	-	-	-	Not Occupied	-	-
45	0.5	L-GN	5007	Reverse Switch Signal	I	LSA and MG9
46-47	-	-	-	Not Occupied	-	-
48	0.5	D-GN/WH	428	EVAP Canister Purge Solenoid Control	I	LSA
49	0.5	D-GN	335	Low Speed Cooling Fan Relay Control	I	LSA
50	0.5	OG/WH	3223	Heated Oxygen Sensor Heater Low Control Bank 2 Sensor (2)	I	LSA
51-52	-	-	-	Not Occupied	-	-
53	0.5 0.5	TN/BK TN/BK	2500 2500	High Speed GMLAN Serial Data (+) (1) High Speed GMLAN Serial Data (+) (1)	I	LSA and MG9 LSA and MYD
54	-	-	-	Not Occupied	-	-
55	0.8	YE	410	Engine Coolant Temperature Sensor Signal	I	LSA
56	0.8	L-BU	6118	Manifold Air Temperature Sensor Signal	I	LSA
57	0.5	OG/BK	380	A/C Refrigerant Pressure Sensor Signal	I	LSA
58	0.8	GY/BK	433	Barometric Pressure Sensor Signal	I	LSA
59	0.8	L-GN	432	Manifold Absolute Pressure Sensor Signal	I	LSA
60-62	-	-	-	Not Occupied	-	-
63	0.5 0.5	WH/D-GN L-GN	5380 6338	Brake Position Sensor Signal Manual Transmission Clutch Position Sensor Signal Position	I	LSA and MYD LSA and MG9
64-65	-	-	-	Not Occupied	-	-
66	0.5	YE	400	Vehicle Speed Sensor Signal	I	LSA and MG9
67	0.5	VT	401	Vehicle Speed Sensor Low Reference	I	LSA and MG9
68-72	-	-	-	Not Occupied	-	-
73	3	BK	1550	Ground	II	LSA