K20 Engine Control Module X2 (LAU)

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: K20 Engine Control Module X2 (LAU) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	2 BK/WH	451	Ground
2	2 BK/WH	451	Ground
3	0.8 PK/BK	5290	Ignition Voltage
4	2 BK/WH	451	Ground
5	0.8 PK/BK	5290	Ignition Voltage
6	0.8 PK/BK	5290	Ignition Voltage
7	0.5 TN/WH	1423	HO2S Heater Low Control - Bank 2
8	0.5 BN	436	AIR Pump Relay Control
9	0.5 BN/WH	6281	Low Reference
10	0.5 D-GN/WH	465	Fuel Pump Relay Control
11	0.5 TN	5514	Low Reference
12	0.5 BN/WH	419	MIL Control
13	0.5 YE	492	MAF Sensor Signal
14	0.5 GY	2709	5-Volt Reference 1
15	0.5 D-BU	1161	APP Sensor 1 Signal
16	-	-	Not Used
17	0.5 OG/BK	1786	Park/Neutral Signal
18	-	-	Not Used
19	0.5 WH	1310	EVAP Canister Vent Solenoid Control
20-22	-	-	Not Used
23	0.5 TN/WH	1669	HO2S Low Signal - Sensor 2
24	-	-	Not Used
25	0.5 L-BU	1162	APP Sensor 2 Signal
26	0.5 L-BU	1937	Fuel Level Sensor Signal - Secondary
27	0.5 D-GN	890	Fuel Tank Pressure Sensor Signal
28	-	-	Not Used
29	0.5 PK/WH	2092	Fuel Economy Mode Switch Signal
30-33	-	-	Not Used
34	0.5 BN	1271	Low Reference
35	0.5 GY	2700	5-Volt Reference
36	0.5 PU	1589	Fuel Level Sensor Signal - Primary
37	-	-	Not Used
38	0.5 PU/WH	1668	HO2S High Signal - Sensor 2
39	0.5 OG/BK	380	A/C Refrigerant Pressure Sensor Signal
40	-	-	Not Used
41	0.5 D-BU	5985	Serial Data Wake - Up Signal
42	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus+
43-44	-	-	Not Used
45	0.5 GY	5127	Afterboil Coolant Pump Supply Voltage
46	0.5 D-GN	335	Low Speed Cooling Fan Relay Control
47	0.5 PU	1272	Low Reference
48	0.5 TN	1274	5-Volt Reference
49	0.5 WH/BK	1164	5-Volt Reference
50-51	-	-	Not Used
52	0.5 L-BU/WH	6311	Brake Pedal Switch Signal
53	-	-	Not Used
54	0.5 PK	439	Ignition Voltage
55	0.5 TN	2501	High Speed GMLAN Serial Data Bus -
56	0.5 RD/WH	440	Battery Positive Voltage
57	0.5 PU/WH	6386	Starter Relay Control
58	0.5 YE	5991	Powertrain Relay Control

Connector Part Information

Harness Type: Engine
OEM Connector: 10866294
Service Connector: 19115599
Description: 58-Way F 280 Series Sealed (BK)

Terminal Part Information

Pins: 1, 2, 4
Terminal/Tray: 1928498059/24
Core/Insulation Crimp: 2/5
Release Tool/Test Probe: J-38125-561/J-35616-35 (VT)

Pins: 3, 5, 6
Terminal/Tray: 1928498058/8
Core/Insulation Crimp: E/1
Release Tool/Test Probe: J-38125-561/J-35616-35 (VT)

Pins: 7-15, 17, 19, 23, 25-27, 29, 34-36, 38, 39, 41, 42, 45-49, 52, 54-58
Terminal/Tray: 1928498135/19
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-16 (L-GN)