Engine Control Module (ECM) K (MR-140) (L34)

Fig 1: Engine Control Module (ECM) K Connector End View

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) K Connector Terminal Identification (MR-140) (L34)

Pin	Wire	Circuit	Function
1	0.5 OG	440	Battery Positive Voltage
2-4	-	-	Not Used
5	0.5 BK/WH	51	Ground
6	0.5 D-GN/WH	817	Vehicle Speed Signal (Manual Transmission)
7	0.5 D-BU	876	Rough Road Signal - W/ABS
8-11	-	-	Not Used
12	0.5 D-BU	473	High Speed Cooling Fan Relay Control
13	WH/BK	962	Intake Manifold Tuning Valve Solenoid Control
14	0.5 PU	1807	CAN Serial Data High
15	0.5 YE	710	CAN Serial Data Low
16	BN/WH	1669	Heated Oxygen Sensor (HO2S) 1 Heater Control
17	0.5 OG	440	Battery Positive Voltage
18	0.5 PK/BU	539	Ignition 1 Voltage
19-20	-	-	Not Used
21	0.5 D-GN	602	Rough Road Sensor Signal
22	0.5 L-BU	380	A/C Refrigerant Pressure (ACP) Sensor Signal
23	-	-	Not Used
24	0.5 D-GN	135	Engine Coolant Temperature (ECT) Sensor Gage Signal
25	0.5 GY (WH)	121	Engine Speed Signal
26-27	-	-	Not Used
28	0.5 D-GN/WH (D-GN)	335	Low Speed Cooling Fan Relay Control
29	0.5 D-GN (PU)	67	A/C Compressor Clutch Coil Supply Voltage
30	0.5 WH	30	Fuel Level Sensor Signal
31	-	-	Not Used
32	0.5 PU	2000	Keyword Serial Data
33	-	-	Not Used
34	0.5 PU/WH	632	Low Reference
35	0.5 D-GN/WH	762	A/C Request Signal
36	0.5 PU	1670	Heated Oxygen Sensor (HO2S) 2 Signal
37-49	-	-	Not Used
50	0.5 GY	605	5-Volt Reference
51	0.5 GY	1936	Fuel Level Sensor Signal
52	0.5 YE/D-GN	890	Fuel Tank Pressure Sensor Signal
53	0.5 L-GN	413	Heated Oxygen Sensor (HO2S) 2 Low Reference
54	0.5 L-GN (D-GN/WH)	465	Fuel Pump Relay Control
55-63	-	-	Not Used
64	0.5 BN/WH	419	Malfunction Indicator Lamp (MIL) Control

Connector Part Information