Engine Control Module Connector End Views. Pontiac Grand Prix 2007

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2007 🢒 Grand Prix 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Engine Control Module Connector End Views

Connector 1:	Engine Control Module (ECM) C1
Connector 2:	Engine Control Module (ECM) C2
Connector 3:	Engine Control Module (ECM) C3

Engine Control Module (ECM) C1

Connector Part Information

OEM: 13583475
Service: 88988373
Description: 56-Way F MX123 Series (BK)

Terminal Part Information

Pins: 7, 9, 12, 16, 18- 20, 25, 29, 31- 37, 39, 40, 44, 46- 49, 53-56
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

Engine Control Module (ECM) C1

Pin	Wire Color	Circuit No.	Function
1-6	--	--	Not Used
7	WH	17	Stop Lamp Switch Signal
8	--	--	Not Used
9	BK	2759	Low Reference
10-11	--	--	Not Used
12	BN/WH	419	MIL Control
13	D-GN/WH	465	Fuel Pump Relay Control
14-15	--	--	Not Used
16	D-GN	1049	ECM Class 2 Serial Data
17	--	--	Not Used
18	BN	1141	Accessory Voltage
19	PK	439	Ignition 1 Voltage
20	OG	540	Battery Positive Voltage
21-24	--	--	Not Used
25	WH	121	Engine Speed Signal
26-28	--	--	Not Used
29	GY	1884	Cruise Control Switch Signal
30	--	--	Not Used
31	YE/BK	6032	Low Reference
32	GY	6031	5-Volt Reference 2
33	WH/BK	1164	5-Volt Reference 2
34	GY	2709	5-Volt Reference 1
35	TN	1274	5-Volt Reference 1
36	BN	1271	Low Reference
37	PU	1272	Low Reference
38	--	--	Not Used
39	D-GN	389	Vehicle Speed Signal
40	BN	5069	Powertrain Relay Control
41-43	--	--	Not Used
44	PU	1589	Fuel Level Sensor Signal
45	--	--	Not Used
46	OG	6030	Brake Booster Vacuum Signal
47	D-BU	1161	APP Sensor 1 Signal
48	D-GN	890	Fuel Tank Pressure Sensor Signal
49	L-BU	1162	APP Sensor 2 Signal
50-52	--	--	Not Used
53	D-GN/WH	459	A/C Compressor Clutch Relay Control
54	D-BU	473	High Speed Cooling Fan Relay Control
55	WH	1310	EVAP Canister Vent Solenoid Control
56	YE/BK	625	Starter Enable Relay Control

Engine Control Module (ECM) C2

Connector Part Information

OEM: 13574286
Service :88988931
Description: 73-Way F MX123 34566 Series (BK)

Terminal Part Information

Pins: 1-9, 11-13, 16-19, 23, 24, 27, 29, 32-35, 39, 40, 42-44, 48, 49, 52-55, 59, 60, 62-64, 66-73
Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

Engine Control Module (ECM) C2

Pin	Wire Color	Circuit No.	Function
1	PU	2121	IC 1 Control
2	TN	1664	HO2S Low Signal
3	PU/WH	1665	HO2S High Signal
4	PU/WH	1668	HO2S High Signal
5	TN/WH	1669	HO2S Low Signal
6	L-BU	1876	Knock Sensor 2 Signal
7	GY	2303	Knock Sensor 2 Signal
8	D-BU	496	Knock Sensor 1 Signal
9	GY	1716	Knock Sensor 1 Signal
10	--	--	Not Used
11	YE	581	TAC Motor Control 1
12	BN	582	TAC Motor Control 2
13	PK/BK	5290	Ignition 1 Voltage
14-15	--	--	Not Used
16	PK/BK	1746	Fuel Injector 3 Control
17	PU/WH	2128	IC 8 Control
18	D-GN/WH	2124	IC 4 Control
19	BN/WH	2130	Low Reference
20-22	--	--	Not Used
23	PK/BK	632	Low Reference
24	BK	2755	Low Reference
25-26	--	--	Not Used
27	YE/BK	1868	Low Reference
28	--	--	Not Used
29	BK/WH	1704	Low Reference
30-31	--	--	Not Used
32	L-GN/BK	1745	Fuel Injector 2 Control
33	RD	2127	IC 7 Control
34	D-GN	2125	IC 5 Control
35	BN	2129	Low Reference
36-38	--	--	Not Used
39	RD	631	5-Volt Reference 1
40	GY	2705	5-Volt Reference 1
41	--	--	Not Used
42	BK	2760	Low Reference
43	L-GN	1867	5-Volt Reference 2
44	L-BU/BK	1688	5-Volt Reference 2
45-47	--	--	Not Used
48	D-BU/WH	878	Fuel Injector 8 Control
49	BK/WH	845	Fuel Injector 5 Control
50-51	--	--	Not Used
52	YE/BK	846	Fuel Injector 6 Control
53	RD/WH	2122	IC 2 Control
54	L-BU/WH	2126	IC 6 Control
55	L-BU	2123	IC 3 Control
56-58	--	--	Not Used
59	BN/WH	633	CMP Sensor Signal
60	TN/WH	331	Oil Pressure Switch Signal
61	--	--	Not Used
62	TN	472	IAT Sensor Signal
63	D-BU/WH	1869	CKP Sensor Signal
64	D-GN	485	TP Sensor 1 Signal
65	--	--	Not Used
66	PU	486	TP Sensor 2 Signal
67	YE	492	MAF Sensor Signal
68	BK/WH	3113	HO2S Heater Low Control Sensor
69	BN	2391	HO2S Heater Low Control - Sensor 2
70	L-BU/BK	844	Fuel Injector 4 Control
71	RD/BK	877	Fuel Injector 7 Control
72	BK	1744	Fuel Injector 1 Control
73	BK/WH	451	Ground

Engine Control Module (ECM) C3

Connector Part Information

OEM: 13579472
Service: 88988372
Description: 73-Way F MX123 34566 Series (GY)

Terminal Part Information

Pins: 7, 10-12, 17, 18, 21, 23, 28, 29, 33, 35, 37, 39, 44, 46, 48, 49, 53, 55, 57, 59, 66, 68, 69,
Terminal/Tray: 15359541/4
Core/Insulation Crimp: M/M
Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)

Engine Control Module (ECM) C3

Pin	Wire Color	Circuit No.	Function
1-6	--	--	Not Used
7	RD	225	Generator Turn On Signal
8-9	--	--	Not Used
10	TN	5496	Cylinder 6 Shutoff Solenoid Control
11	D-BU	5491	Cylinder 1 Shutoff Solenoid Control
12	TN/BK	464	Delivered Torque Signal
13-16	--	--	Not Used
17	OG/BK	463	Requested Torque Signal
18	BN	1174	Oil Level Switch Signal
19-20	--	--	Not Used
21	BK	2751	Low Reference
22	--	--	Not Used
23	OG/BK	469	Low Reference
24-27	--	--	Not Used
28	RD/BK	645	Low Reference
29	GY	23	Generator Field Duty Cycle Signal
30-32	--	--	Not Used
33	TN	2501	High-Speed GMLAN Serial Data Bus (-)
34	--	--	Not Used
35	BK	2761	Low Reference
36	--	--	Not Used
37	GY	2700	5-Volt Reference 1
38	--	--	Not Used
39	GY	2704	5-Volt Reference 1
40-43	--	--	Not Used
44	GY	605	5-Volt Reference 2
45	--	--	Not Used
46	OG/BK	1786	Park/Neutral Signal
47	--	--	Not Used
48	D-GN/WH	428	EVAP Canister Purge Solenoid Control
49	D-GN	335	Low Speed Cooling Fan Relay Control
50-52	--	--	Not Used
53	TN/WH	2500	High-Speed GMLAN Serial Data Bus (+)
54	--	--	Not Used
55	YE	410	ECT Sensor Signal
56	--	--	Not Used
57	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
58	--	--	Not Used
59	L-GN	432	MAP Sensor Signal
60-65	--	--	Not Used
66	RD	381	Vehicle Speed Signal
67	--	--	Not Used
68	WH	5497	Cylinder 7 Shutoff Solenoid Control
69	OG	5494	Cylinder 4 Shutoff Solenoid Control
70-73	--	--	Not Used