Powertrain Control Module (PCM) Connector End Views

WARNING: This page is about a different car, the 2004 Pontiac Grand Am and 2004 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.

Powertrain Control Module (PCM) Terminal Identification C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191111 80-Way F Micro-Pack 100 Series, Sealed (BLU)
Pin	Wire Color	Circuit No.	Function
1	WHT/BLK	2762	Low Reference
2-3	-	-	Not Used
4	LT GRN	1222	1-2 Shift Solenoid Valve Control
5	DK BLU	473	High Speed Cooling Fan Relay Control
6	DK GRN	335	Low Speed Cooling Fan Relay Control
7	BRN/WHT	633	CMP Sensor Signal
8	PPL/WHT	430	Low Resolution Engine Speed Signal
9	LT BLU/BLK	647	Medium Resolution Engine Speed Signal
10	BRN	2704	5-Volt Reference
11	-	-	Not Used
12	TAN	413	Low Reference
13	ORN/BLK	469	Low Reference
14-15	-	-	Not Used
16	BLK/WHT	451	Ground
17	BLK	2760	Low Reference
18	-	-	Not Used
19	PPL	1500	Ignition 0 Voltage
20	ORN	480	Battery Positive Voltage
21-27	-	-	Not Used
28	TAN/WHT	1669	HO2S Low Signal Bank 1 Sensor 2
29	BLK	808	Low Reference
30	PPL	420	TCC Brake Switch/Cruise Control Release Signal
31	BLK	2753	Low Reference
32	GRY	435	EGR Solenoid Low Control
33	DK BLU	496	Knock Sensor Signal
34-37	-	-	Not Used
38	LT GRN/WHT	1749	IAC Coil B High Control
39-42	-	-	Not Used
43	BLK	1744	Fuel Injector 1 Control
44	YEL/BLK	1223	2-3 Shift Solenoid Valve Control
45	-	-	Not Used
46	PNK/BLK	1746	Fuel Injector 3 Control
47	LT GRN/BLK	1745	Fuel Injector 2 Control
48	RED/BLK	453	Low Reference
49-52	-	-	Not Used
53	TAN/BLK	424	IC Timing Signal
54	WHT	423	IC Timing Control
55	DK GRN/WHT	817	Vehicle Speed Signal
56	BLK/WHT	451	Ground
57	BLK/WHT	451	Ground
58	PPL	1807	Class 2 Serial Data
59	-	-	Not Used
60	BLK/WHT	451	Ground
61	BLK	2752	Low Reference
62	DK BLU/WHT	1231	AT ISS Low Signal
63	RED/BLK	1230	AT ISS High Signal
64	YEL	400	VSS High Signal
65	PPL	401	VSS Low Signal
66-67	-	-	Not Used
68	YEL	772	Transmission Range Switch Signal B
69	YEL	492	MAF Sensor Signal
70-71	-	-	Not Used
72	DK GRN	83	Cruise Control Inhibit Signal
73	BLK/WHT	845	Fuel Injector 5 Control
74-75	-	-	Not Used
76	DK GRN/WHT	428	EVAP Canister Purge Solenoid Control
77-78	-	-	Not Used
79	YEL/BLK	846	Fuel Injector 6 Control
80	BLK	2751	Low Reference

Powertrain Control Module (PCM) Terminal Identification C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12191111 80-Way F Micro-Pack 100 Series, Sealed (CLR)
Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	WHT	1310	EVAP Canister Vent Solenoid Control
3	DK GRN/WHT	465	Fuel Pump Relay Control
4	RED	1676	EGR Solenoid High Control
5	BRN/WHT	419	MIL Control
6	-	-	Not Used
7	LT BLU/WHT	1747	IAC Coil A High Control
8-9	-	-	Not Used
10	PPL	412	HO2S High Signal Sensor 1
11	PPL/WHT	1668	HO2S High Signal Bank 1 Sensor 2
12-15	-	-	Not Used
16	WHT	776	Transmission Range Switch Signal P
17	RED	1226	Transmission Fluid Pressure Switch Signal C
18	BLK/WHT	771	Transmission Range Switch Signal A
19	TAN/BLK	231	Oil Pressure Switch Signal
20-22	-	-	Not Used
23	PPL	806	Crank Voltage
24	PNK	639	Ignition 1 Voltage
25	LT GRN	432	MAP Sensor Signal
26	YEL	410	ECT Sensor Signal
27	RED/BLK	380	A/C Refrigerant Pressure Sensor Signal
28	BRN	1456	EGR Valve Position Signal
29	-	-	Not Used
30	BRN/WHT	2702	5-Volt Reference
31	-	-	Not Used
32	GRY	2709	5-Volt Reference
33	GRY/BLK	2701	5-Volt Reference
34	GRY	2700	5-Volt Reference
35	BLK	2759	Low Reference
36	-	-	Not Used
37	BLK/WHT	3113	HO2S Heater Low Control Bank 1 Sensor 1
38	-	-	Not Used
39	DK GRN/WHT	459	A/C Compressor Clutch Relay Control
40-41	-	-	Not Used
42	LT BLU/BLK	844	Fuel Injector 4 Control
43	-	-	Not Used
44	LT BLU/BLK	1748	IAC Coil A Low Control
45	RED/BLK	1228	PC Solenoid Valve High Control (Sol. A)
46	LT BLU/WHT	1229	PC Solenoid Valve Low Control (Sol. A)
47-48	-	-	Not Used
49	LT GRN/BLK	444	IAC Coil B Low Control
50	TAN	472	IAT Sensor Signal
51-54	-	-	Not Used
55	DK GRN	890	Fuel Tank Pressure Sensor Signal
56	GRY	773	Transmission Range Switch Signal C
57	DK BLU	1225	Transmission Fluid Pressure Switch Signal B
58	BRN	1174	Oil Level Switch Signal (If Equipped)
59	LT BLU/BLK	396	Cruise Control Engaged Signal
60	-	-	Not Used
61	RED	225	Generator Turn On Signal
62	-	-	Not Used
63	YEL	657	TCC Release Switch Signal
64-65	-	-	Not Used
66	DK BLU	417	TP Sensor Signal
67	-	-	Not Used
68	YEL/BLK	1227	TFT Sensor Signal
69	PPL	1589	Fuel Level Sensor Signal
70	RED/WHT	812	12-Volt Reference
71	-	-	Not Used
72	RED/WHT	812	12-Volt Reference
73	BLK	407	Low Reference
74	BLK	407	Low Reference
75	-	-	Not Used
76	YEL	447	Starter Relay Coil Control
77	-	-	Not Used
78	BRN	418	TCC PWM Solenoid Valve Control
79	-	-	Not Used
80	BLK	808	Low Reference