Engine Control Module Connector End Views. Cadillac XLR 2007

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2007 🢒 XLR 🢒 Body Systems 🢒 Lighting 🢒 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: 15499497
Service: 88988373
Description: 56-Way F MX123 Series, Sealed (BU)

Terminal Part Information

Pins: 7, 12, 13, 18, 25, 33, 35-37, 39, 40, 47, 49, 53, 56
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 9, 19, 20, 34, 44, 45, 48, 55
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: Pins 9, 19, 20, 34, 44, 45, 48, 55 - J/J
Core/Insulation Crimp: Pins 20 - K/K
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

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	TN	808	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	YE	43	Accessory Voltage
19	PK	1439	Ignition 1 Voltage
20	RD/WH	2440	Battery Positive Voltage
21-24	--	--	Not Used
25	WH	121	Engine Speed Signal
26-32	--	--	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	--	--	Not Used
39	D-GN/WH	817	Vehicle Speed Signal
40	WH/BK	448	Ignition 1 Relay Control
41-43	--	--	Not Used
44	D-BU	1936	Fuel Level Sensor - Primary
45	L-BU	1937	Fuel Level Sensor - Secondary
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
54	--	--	Not Used
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: 15499466
Service: 88988931
Description: 73-Way F 0.64 2.8 Series, Sealed (BK)

Terminal Part Information

Pins: 1-5, 11-13, 15, 17-19, 28, 30, 31, 33-35, 46, 47, 50, 51, 53-55, 68, 69
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 6-9, 14, 16, 20-24, 27, 29, 32, 36-40, 42, 43, 44, 48, 49, 52, 56-60, 62, 63, 64, 66, 67, 70, 71, 72
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
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	H02S Low Reference Bank 1 Sensor 1
3	PU/WH	3110	HO2S Reference Voltage Bank 1 Sensor 1
4	PU	3120	H02S Reference Voltage Bank 1 Sensor 2
5	TN/WH	3121	H02S Low Reference Bank 1 Sensor 2
6	L-BU	1876	KS 2 Signal
7	GY	2303	KS 2 Signal
8	D-BU	496	KS 1 Signal
9	GY	1716	KS 1 Signal
10	--	--	Not Used
11	YE	581	TAC Motor Control - 1
12	BN	582	TAC Motor Control - 2
13	PK	439	Ignition 1 Voltage
14	PK/BK	6395	CMP Actuator Solenoid Control Bank 1 Intake
15	TN/BK	6397	CMP Actuator Solenoid Control Bank 2 Intake
16	D-BU/WH	878	Fuel Injector 8 Control
17	OG/WH	2122	IC 2 Control
18	L-BU/WH	2126	IC 6 Control
19	BN/WH	2130	Low Reference
20	PU	6267	Low Reference
21	TN	6268	Low Reference
22	WH	6269	Low Reference
23	BN	6266	Low Reference
24	BK	2755	Low Reference
25-26	--	--	Not Used
27	GY/BK	6272	Low Reference
28	PK	439	Ignition 1 Voltage
29	TN	2752	Low Reference
30	BN/WH	6754	Low Reference
31	D-BU/WH	6756	Low Reference
32	PK/BK	1746	Fuel Injector 3 Control
33	OG	2127	IC 7 Control
34	D-GN	2125	IC 5 Control
35	BN	2129	Low Reference
36	D-GN	6457	5-Volt Reference - 1
37	OG	6260	5-Volt Reference - 1
38	PK	6261	5-Volt Reference - 1
39	D-BU	6259	5-Volt Reference - 1
40	GY	2705	5-Volt Reference - 1
41	--	--	Not Used
42	TN	2760	Low Reference
43	PU/WH	6270	5-Volt Reference - 2
44	GY	2701	5-Volt Reference - 2
45	--	--	Not Used
46	BN	6753	Low Reference
47	D-BU	6755	Low Reference
48	L-GN/BK	1745	Fuel Injector 2 Control
49	TN/WH	845	Fuel Injector 5 Control
50	WH/BK	6396	CMP Actuator Solenoid Control Bank 1 Exhaust
51	GY/BK	6394	CMP Actuator Solenoid Control Bank 2 Exhaust
52	L-BU/BK	844	Fuel Injector 4 Control
53	L-BU	2123	IC 3 Control
54	D-GN/WH	2124	IC 4 Control
55	PU/WH	2128	IC 8 Control
56	D-GN/WH	6264	CMP Sensor Signal Bank 1 Exhaust
57	OG/BK	6263	CMP Sensor Signal Bank 2 Intake
58	PK/BK	6262	CMP Sensor Signal Bank 2 Exhaust
59	D-BU/WH	6265	CMP Sensor Signal Bank 1 Intake
60	TN/WH	331	Oil Pressure Sensor Signal
61	--	--	Not Used
62	TN/BK	472	IAT Sensor Signal
63	WH/BK	6271	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	GY/WH	3113	H02S Heater Low Control Bank 1 Sensor 1
69	GY/WH	3122	H02S Heater Low Control Bank 1 Sensor 2
70	YE/BK	846	Fuel Injector 6 Control
71	OG/BK	877	Fuel Injector 7 Control
72	TN	1744	Fuel Injector 1 Control
73	BK/WH	451	Ground

Engine Control Module (ECM) - C3

Connector Part Information

OEM: 15499942
Service: 88988372
Description: 73-Way F MX123 34566 Series, Sealed (GY)

Terminal Part Information

Pins: 3-6, 15, 50
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Pins: 7, 18, 21, 23, 29, 33, 35, 37, 39, 46, 48, 49, 53, 55, 57, 59
Terminal/Tray: 33467-0003/23
Core/Insulation Crimp: H/H
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) - C3

Pin	Wire Color	Circuit No.	Function
1-2	--	--	Not Used
3	TN/WH	3211	H02S Low Reference Bank 2 Sensor 1
4	PU/WH	3210	HO2S Reference Voltage Bank 2 Sensor 1
5	PU	3220	H02S Reference Voltage Bank 2 Sensor 2
6	TN	3221	H02S Low Reference Bank 2 Sensor 2
7	OG	225	Generator Turn On Signal
8-14	--	--	Not Used
15	L-GN	3212	H02S Heater Low Control Bank 2 Sensor 1
16-17	--	--	Not Used
18	BN	1174	Oil Level Switch Signal
19-20	--	--	Not Used
21	BK/WH	2751	Low Reference
22	--	--	Not Used
23	OG/BK	469	Low Reference
24-28	--	--	Not Used
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	TN	2761	Low Reference
36	--	--	Not Used
37	GY	2700	5-Volt Reference - 1
38	--	--	Not Used
39	GY	2704	5-Volt Reference - 2
40-45	--	--	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	Cooling Fan Speed Control
50	OG/BK	3223	H02S Heater Low Control Bank 2 Sensor 2
51-52	--	--	Not Used
53	TN/BK	2500	High Speed GMLAN Serial Data Bus +
54	--	--	Not Used
55	YE	410	ECT Sensor Signal
56	--	--	Not Used
57	OG/BK	380	A/C Refrigerant Pressure Sensor Signal
58	--	--	Not Used
59	L-GN	432	MAP Sensor Signal
60-72	--	--	Not Used
73	BK/WH	451	Ground