K20 Engine Control Module X1

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Connector Part Information

Harness Type: Engine
OEM Connector: 34576-0703
Service Connector: 88988373
Description: 56-Way F MX123 34576 Series (BK with BU Terminal Position Assurance Lock)

Terminal Part Information

Terminated Lead: 13575575
Release Tool: J-38125-213
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins 20 - K/K
Core/Insulation Crimp: Pins 1-3, 10, 12, 13, 15, 16, 18, 19, 24, 26, 28-33, 38, 40, 41, 43, 45, 46, 48, 51, 52, 55 - J/J

K20 Engine Control Module X1

Pin	Size	Color	Circuit	Function	Option
1	0.5	L-BU/BK	7493	High Speed GMLAN Serial Data (+) (3)	-
2	0.5	L-GN/WH	1162	Accelerator Pedal Position Signal (2)	-
3	0.5	L-GN/WH	492	Mass Air Flow Sensor Signal	-
4-9	-	-	-	Not Used	-
10	0.5	YE/WH	1161	Accelerator Pedal Position Signal (1)	-
11	-	-	-	Not Used	-
12	0.5	L-GN	380	A/C Refrigerant Pressure Sensor Signal	-
13	0.5	BK/BN	5514	Low Reference	-
14	-	-	-	Not Used	-
15	0.5	WH	7494	High Speed GMLAN Serial Data (-) (3)	-
16	0.5	BN/RD	1274	5 Volt Reference	-
17	-	-	-	Not Used	-
18	0.5	L-BU/WH	3977	Accessory Wakup Serial Data 2	-
19	0.5	VT/WH	239	Run/Crank Ignition 1 Voltage	-
20	0.75	RD/BN	440	Battery Positive Voltage	-
21-23	-	-	-	Not Used	-
24	0.5	WH/RD	1164	5 Volt Reference	-
25	-	-	-	Not Used	-
26	0.5	BN/RD	2700	5 Volt Reference	-
27	-	-	-	Not Used	-
28	0.5	L-GN/GY	465	Fuel Pump Primary Relay Control	-
29	0.5	L-BU	2500	High Speed GMLAN Serial Data (+) (1)	-
30	0.5	BK/VT	1272	Low Reference	-
31	0.5	BK/VT	2760	Low Reference	-
32	0.5	BK/L-BU	6813	Low Reference	-
33	0.5	WH/L-BU	6311	Cruise/ETC/TCC Brake Signal	-
34-37	-	-	-	Not Used	-
38	0.5	BK/L-BU	1271	Low Reference	-
39	-	-	-	Not Used	-
40	0.5	WH	5148	Engine Main Relay Control	-
41	0.5	L-BU/VT	2364	Cooling Fan Speed Signal	-
42	-	-	-	Not Used	-
43	0.5	WH	2501	High Speed GMLAN Serial Data (-) (1)	-
44	-	-	-	Not Used	-
45	0.5	WH/L-BU	6289	Induction Air Temperature Sensor Signal	-
46	0.5	YE/BK	3000	Coolant Temperature Sensor #2 Signal	-
47	-	-	-	Not Used	-
48	0.5	L-GN	6271	Crankshaft 60X Sensor Signal	-
49-50	-	-	-	Not Available	-
51	0.5	L-BU/BN	421	Air Injection Reaction Solenoid Relay Coil Control	NU6
52	0.5	BN/WH	419	Check Engine Indicator Control	-
53-54	-	-	-	Not Available	-
55	0.5	L-GU/L-BU	436	Air Injection Reaction Pump Relay Coil Control	NU6
56	-	-	-	Not Available	-