Powertrain Control Module (PCM) X1 (L26)

Fig 1: Powertrain Control Module (PCM) X1 (L26) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire Color	Circuit No.	Function
1-3	-	-	Not Used
4	0.35 GY	2700	5-Volt Reference 2
5	-	-	Not Used
6	0.35 BN/WH	419	MIL Control
7	0.35 BK	2751	Low Reference
8	0.35 BK	2759	Low Reference
9	-	-	Not Used
10	0.35 WH	1310	EVAP Canister Vent Solenoid Control
11	-	-	Not Used
12	0.5 BK	476	Low Reference (NU6)
13-14	-	-	Not Used
15	0.35 D-GN	1049	PCM Class 2 Serial Data
16-17	-	-	Not Used
18	0.35 BN	1141	Accessory Voltage
19	0.5 PK	439	Ignition 1 Voltage
20	0.5 OG	540	Battery Positive Voltage
21	0.35 WH	121	Engine Speed Signal (ABS)
22	0.35 D-GN	389	Vehicle Speed Signal
23	0.35 YE/BK	625	Starter Enable Relay Control
24	0.35 BN	5069	Powertrain Relay Control
25	-	-	Not Used
26	0.35 D-GN	890	Fuel Tank Pressure Sensor Signal
27-30	-	-	Not Used
31	0.35 RD/BK	380	A/C Refrigerant Pressure Sensor Signal
32	0.5 WH	17	Stop Lamp Switch Signal
33	0.35 D-GN/WH	459	A/C Compressor Clutch Relay Control
34	0.35 BN	436	Air Pump Relay Control (NU6)
35-36	-	-	Not Used
37	0.35 D-GN/WH	465	Fuel Pump Relay Control
38-42	-	-	Not Used
43	0.35 PU	1589	Fuel Level Sensor Signal
44	0.35 GY	1884	Cruise Control Switch Signal
45-47	-	-	Not Used
48	0.35 D-GN	335	Low Speed Cooling Fan Relay Control
49	-	-	Not Used
50	0.35 D-BU	473	High Speed Cooling Fan Relay Control
51-52	-	-	Not Used
53	0.35 GY	2709	5-Volt Reference 1
54-56	-	-	Not Used

Connector Part Information

Terminal Part Information