Engine Control Module (ECM)

Courtesy of JAGUAR CARS, INC.

The engine control module (ECM)is located in the E-Box in the plenum area on the passenger side of the engine compartment attached to the bulkhead.

The engine control module (ECM) has the following inputs:

restraints control module (RCM)
Park/neutral switch
Ignition coil feedback x2
Fuel rail temperature
Mass air flow
Engine speed
Camshaft position x2
Driver demand
Brake pedal position switch
Speed control switches
Generator load
Oxygen sensors pre catalyst x2
Oxygen sensors post catalyst x2
Throttle position
Cooling fan speed
Ignition switch position
Knock sensors x2
manifold absolute pressure (MAP)
Coolant temperature
Engine oil temperature

The engine control module (ECM) outputs to the following:

Throttle Actuator
Brake vacuum pump relay
Ignition coils (x8)
Oxygen sensor heaters (4)
Fuel injectors (8)
Purge Valve
Engine Cooling Fan
Fuel pump relay
Starter Relay
EMS Main Relay
Viscous Fan Control
Generator Control
Diagnostic Module Tank Leakage (DMTL) (NAS Only)
E box fan

ENGINE CONTROL MODULE (ECM) CONNECTOR C0634 PIN OUT TABLE

Pin No	Description	Input/Output
1	Not used	-
2	Not used	-
3	Generator monitor	Input
4	Not used	-
5	Not used	-
6	crankshaft position (CKP) sensor -	Input
7	camshaft position (CMP) sensor 1ground (GND)	-
8	camshaft position (CMP) sensor 2ground (GND)	-
9	Not used	-
10	throttle position (TP) sensor ground (GND)	-
11	manifold absolute pressure (MAP) sensor ground	-
12	fuel rail pressure (FRP) sensor ground	-
13	Not used	-
14	Not used	Input
15	engine coolant temperature (ECT) ground	-
16	Not used mass air flow (MAF) ground	-
17	Not used	-
18	mass air flow (MAF) sensor ground	-
19	Knock sensor 1A ground	-
20	Knock sensor 1B ground	-
21	Not used	-
22	Not used	-
23	Oil temperature sensor	Input
24	Not used	-
25	Not used	-
26	UHEGO sensor bank B signal	Input
27	UHEGO sensor bank B ground (GND)	-
28	UHEGO sensor bank A signal	Input
29	UHEGO sensor bank A ground (GND)	-
30	crankshaft position (CKP) sensor +	Input
31	Not used	-
32	Not used	-
33	camshaft position (CMP) signal bank B	Input
34	camshaft position (CMP) signal bank A	Input
35	Not used	-
36	Not used	-
37	Not used	-
38	Not used	-
39	Not used	Input
40	Not used	Input
41	Not used	Input
42	Knock sensor 1 A +	Input
43	Knock sensor 1 B +	Input
44	Not used	-
45	Not used	-
46	Fuel rail temperature sensor	Input
47	Not used	-
48	manifold absolute pressure (MAP) sensor 5 V ref voltage	Output
49	Not used	-
50	exhaust gas recirculation (EGR) 4	Output
51	exhaust gas recirculation (EGR) 3	Output
52	exhaust gas recirculation (EGR) 2	Output
53	exhaust gas recirculation (EGR) 1	Output
54	Ignition coil cylinder 4B	Output
55	Ignition coil cylinder 4A	Output
56	Ignition coil cylinder 3B	Output
57	Ignition coil cylinder 3A	Output
58	Ignition coil cylinder 2B	Output
59	Ignition coil cylinder 2A	Output
60	Ignition coil cylinder 1B	Output
61	Ignition coil cylinder 1A	Output
62	Ignition failure signal bank A	Input
63	Viscous fan speed monitor	Input
64	Ignition failure signal bank B	Input
65	throttle position (TP) sensor 1	Input
66	mass air flow (MAF)	Input
67	throttle position (TP) sensor 2	Input
68	engine coolant temperature (ECT)	Input
69	Inlet manifold boost pressure	Input
70	mass air flow (MAF)	Input
71	Not used	-
72	Electric throttle 5V reference	Output
73	Not used	-
74	Throttle valve open direction -	Output
75	Throttle valve open direction +	Output
76	UHEGO Heater bank A	Output
77	UHEGO Heater bank B	Output
78	Injector cylinder 1A	Output
79	Injector cylinder 1B	Output
80	Injector cylinder 2A	Output
81	Injector cylinder 2B	Output
82	Injector cylinder 3A	Output
83	Injector cylinder 3B	Output
84	Injector cylinder 4A	Output
85	Injector cylinder 4B	Output
86	VVT control bank A	Output
87	VVT control bank B	Output
88	Not used	-
89	Not used	-
90	Not used	-
91	Not used	-
92	Purge valve	Output
93	Viscous fan request	Output
94	E box fan	Output
95	Fuel pump relay	Output
96	Generator control	Output

ENGINE CONTROL MODULE (ECM) CONNECTOR C0635 PIN OUT TABLE

Pin No	Description	Input/Output
1	Signal ground 1	-
2	Power ground 1	-
3	Power ground 3	-
4	Power ground 2	-
5	engine control module (ECM) power	Output
6	Electric throttle power	Input
7	accelerator pedal position (APP) sensor ground 1	-
8	accelerator pedal position (APP) sensor ground 2	-
9	Not used	-
10	Not used	-
11	Not used	-
12	Not used	-
13	Not used	-
14	Not used	-
15	Park/ Neutral signal	Input
16	EMS relay	Output
17	Crank request	Input
18	Not used	-
19	accelerator pedal position (APP) sensor 2 5V ref	-
20	Not used	-
21	Not used	Input
22	HEGO sensor A ground (GND)	-
23	DMTL heater	Output
24	accelerator pedal position (APP) sensor 1 signal	Output
25	HEGO sensor A	Input
26	HEGO sensor B	Input
27	Not used	-
28	restraints control module (RCM)	Input
29	Not used	-
30	Ignition switch	Input
31	Not used	-
32	accelerator pedal position (APP) sensor 1 5V reference	Output
33	DMTL pump	Output
34	HEGO sensor B ground (GND)	-
35	Speed control switch -	Output
36	Speed control switch +	Input
37	Not used	-
38	accelerator pedal position (APP) sensor 2 demand	Input
39	Not used	-
40	Not used	-
41	Brake pedal switch	Input
42	Not used	-
43	Not used	-
44	controller area network (CAN) out -	Input/output
45	controller area network (CAN) in -	Input/output
46	HEGO heater A	Output
47	HEGO heater B	Output
48	DMTL valve	Output
49	Not used	-
50	Vacuum pump relay	Output
51	Starter relay	Output
52	Not used	-
53	Not used	-
54	Battery voltage	Input
55	Not used	-
56	Not used	-
57	controller area network (CAN) out +	Input/output
58	controller area network (CAN) in +	Input/output