Engine Control Module Connector End Views. Saturn SKY 2007

For 1990-2009 cars only

Makes 🢒 Saturn 🢒 2007 🢒 SKY 🢒 HVAC 🢒 HVAC - Manual 🢒 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: 34576-2603
Service: 88988373
Description: 56-Way F (GY)

Terminal Part Information

Pins: 6, 9, 13, 19, 20, 34, 44, 48, 55
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J38125-213/J-35616-64B (L-BU)

Pins: 7, 12, 18, 33, 35-37, 40, 47, 49, 53, 54, 56
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J38125-213/J-35616-64B (L-BU)

Engine Control Module (ECM) C1

Pin	Wire Color	Circuit No.	Function
1-5	--	--	Not Used
6	BN/WH	379	CPP Switch Signal (MA5)
7	L-BU	20	Stop Lamp Supply Voltage
8	--	--	Not Used
9	TN	2759	Fuel Tank Pressure Sensor Low Reference
10-11	--	--	Not Used
12	BN/WH	419	MIL Control
13	D-GN/WH	465	Fuel Pump Relay Control
14-17	--	--	Not Used
18	BN	4	Accessory Voltage
19	PK	1039	Ignition 1 Voltage
20	RD/WH	840	Battery Positive Voltage
21-32	--	--	Not Used
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
38-39	--	--	Not Used
40	BN	5069	Main Relay Control
41-43	--	--	Not Used
44	PU	1589	Fuel Level Sensor Signal
45-46	--	--	Not Used
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 (C60)
54	D-BU	473	High Speed Cooling Fan Relay Control
55	WH	1310	EVAP Canister Vent Solenoid Control
56	YE	447	Starter Relay Coil Control

Engine Control Module (ECM) C2

Connector Part Information

OEM: 34566-2503
Service: 88988931
Description: 73-Way F 0.64 Receptacle 2.8 Series, Sealed (BK)

Terminal Part Information

Pins: 1, 17, 20, 23, 27, 33, 35, 36, 39, 42, 43, 53, 56, 59, 62, 63, 67,
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 2-5, 8, 9, 11-14, 29, 30, 32, 44, 46, 48, 50, 64, 66, 68, 69, 71, 72
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins: 2-5, 8, 9, 14, 29, 30, 32, 44, 46, 48, 50, 64, 66, 68, 69, 71, 72 - J/J
Core/Insulation Crimp: Pins: 11-13 - K/K
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 73
Terminal/Tray: 7116-4152-02/9
Core/Insulation Crimp: 2/5
Release Tool/Test Probe: 12094430/J-35616-35 (VT)

Engine Control Module (ECM) C2

Pin	Wire Color	Circuit No.	Function
1	PU	2121	IC 1 Control
2	TN/WH	3111	Heated Oxygen Sensor Low Signal - Sensor 1
3	PU/WH	3110	Heated Oxygen Sensor Heater Low Control - Sensor 1
4	PU/WH	1668	Heated Oxygen Sensor High Signal - Sensor 2
5	TN/WH	1669	Heated Oxygen Sensor Low Signal - Sensor 2
6-7	--	--	Not Available
8	D-BU	496	KS Signal
9	GY	1716	KS Signal
10	--	--	Not Available
11	YE	581	TAC Motor Control - 1
12	BN	582	TAC Motor Control - 2
13	PK/BK	5290	Ignition 1 Voltage
14	PU	5284	Camshaft Phaser Intake Solenoid Control
15-16	--	--	Not Available
17	L-BU	2123	IC 3 Control
18-19	--	--	Not Available
20	GY	5296	Low Reference
21-22	--	--	Not Available
23	TN	5301	Low Reference
24-26	--	--	Not Available
27	PU	574	Low Reference
28	--	--	Not Available
29	TN	2752	Low Reference
30	L-GN	5282	Low Reference
31	--	--	Not Available
32	GN/BK	1745	Fuel Injector 2 Control
33	D-GN/WH	2124	IC 4 Control
34	--	--	Not Available
35	BN	2129	Low Reference
36	YE/BK	5297	5-Volt Reference 1
37-38	--	--	Not Available
39	D-BU	5300	5-Volt Reference 1
40-41	--	--	Not Available
42	BK	2760	Low Reference
43	L-GN	2867	5-Volt Reference 2
44	GY	2701	5-Volt Reference 2
45	--	--	Not Available
46	TN	2199	Low Reference
47	--	--	Not Available
48	PK/BK	1746	Fuel Injector 3 Control
49	--	--	Not Available
50	TN	452	Camshaft Phaser Exhaust Solenoid Control
51-52	--	--	Not Available
53	OG/WH	2122	IC 2 Control
54-55	--	--	Not Available
56	D-GN	5273	Camshaft Position Exhaust Sensor Signal
57-58	--	--	Not Available
59	OG	5275	Camshaft Position Intake Sensor Signal
60-61	--	--	Not Available
62	TN	472	IAT Sensor Signal
63	YE	573	CKP Sensor Signal
64	D-GN	485	TP Sensor 1 Signal
65	--	--	Not Available
66	PU	486	TP Sensor 2 Signal
67	YE	492	MAF Sensor Signal
68	GY/WH	3113	Heated Oxygen Sensor Heater Low Control - Sensor 1
69	GY/WH	3122	Heated Oxygen Sensor Heater Low Control - Sensor 2
70	--	--	Not Available
71	L-BU/BK	844	Fuel Injector 4 Control
72	TN	1744	Fuel Injector 1 Control
73	BK/WH	451	Ground

Engine Control Module (ECM) C3

Connector Part Information

OEM: 34566-2603
Service: 88988372
Description: 73-Way F 0.64 Receptacle 2.8 Series, Sealed (GY)

Terminal Part Information

Pins: 7, 21, 23, 28, 29, 35, 37, 39, 44, 46-49, 55, 57, 59, 66, 67
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 33, 53, 65
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins: 33, 53 - J/J Pins: 65 - K/K
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Engine Control Module (ECM) C3

Pin	Wire Color	Circuit No.	Function
1-6	--	--	Not Used
7	OG	225	Generator Turn On Signal
8-20	--	--	Not Used
21	BK/WH	2751	Low Reference (C60)
22	--	--	Not Used
23	OG/BK	469	Low Reference
24-27	--	--	Not Used
28	TN/WH	1704	Low Reference
29	GY	23	Generator Field Duty Cycle Signal
30-32	--	--	Not Used
33	TN	2501	High Speed GMLAN Serial Data (-)
34	--	--	Not Used
35	TN	2761	Low Reference
36	--	--	Not Used
37	GY	2700	5-Volt Reference 1 (C60)
38	--	--	Not Used
39	GY	2704	5-Volt Reference 1
40-43	--	--	Not Used
44	L-BU/BK	1688	5-Volt Reference 2
45	--	--	Not Used
46	OG/BK	1786	Ignition Lock Cylinder Control Actuator (M82)
47	D-GN	1433	PNP/Clutch Start Switch Signal (MA5)
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/BK	2500	High Speed GMLAN Serial Data (+)
54	--	--	Not Used
55	YE	410	ECT Sensor Signal
56	--	--	Not Used
57	OG/BK	380	A/C Refrigerant Pressure Sensor Signal (C60)
58	--	--	Not Used
59	L-GN	432	MAP Sensor Signal
60-64	--	--	Not Used
65	TN/BK	231	Oil Pressure Switch Signal
66	YE	400	OSS High Signal (MA5)
67	PU	401	OSS Low Signal (MA5)
68-73	--	--	Not Used