Engine Control Module (ECM) - Component Location (544 Body): Overview

Engine Control Module (ECM) - Component Location (544 Body): Overview Volvo S40 II

Scheme 41: LOCATION OF COMPONENTS, ENGINE COMPARTMENT (2004, 2005, 2006, 2007)

Not all the following components are necessarily in the car. The components vary between engine types.

	Component	Located at/on
1	Injectors (5 x)	The intake manifold.
2	Intake camshaft reset valve	Engine, timing belt side, the by camshaft.
3	A/C pressure sensor	Air conditioning (A/C) system high pressure pipe (thin pipe).
4	Air conditioning (A/C) pressure switch	Air conditioning (A/C) system low pressure pipe (thick pipe).
5	Ignition coil (5 x)	The cylinder head.
6	Evaporative emission system (EVAP) valve	Cylinder block, by cowl panel.
7	Camshaft position (CMP) sensor, intake	Engine, flywheel side, by the camshaft.
8	Integrated relay/fusebox
9	Engine speed (RPM) sensor	Above the flywheel.
10	Mass air flow (MAF) sensor and intake air temperature (IAT) sensor, intake	The intake manifold.
11	Engine coolant temperature (ECT) sensor	The thermostat housing.
12	Pressure sensor, intake	Engine, flywheel side.
13	Engine control module (ECM)	The air cleaner (ACL) module.
14	Knock sensor (KS)	The cylinder block, under the air cleaner (ACL) module.
15	Engine cooling fan (FC) control module
16	Oil pressure switch	Lower front edge of the engine.
17	Throttle unit	The intake manifold.
18	Fuel pressure/fuel temperature sensor	Fuel rail right face

Scheme 42: LOCATION OF COMPONENTS, ENGINE COMPARTMENT (2008, 2009, 2010)

Not all the following components are necessarily in the car. The components vary between engine types.

	Component	Located at/on
1	Injectors (5 x)	The intake manifold.
2	Intake camshaft reset valve	Engine, timing belt side, the by camshaft.
3	A/C pressure sensor	Air conditioning (A/C) system high pressure pipe (thin pipe).
4	Air conditioning (A/C) pressure switch	Air conditioning (A/C) system low pressure pipe (thick pipe).
5	Ignition coil (5 x)	The cylinder head.
6	Evaporative emission system (EVAP) valve	Cylinder block, by cowl panel.
7	Camshaft position (CMP) sensor, intake	Engine, flywheel side, by the camshaft.
8	Integrated relay/fusebox
9	Engine speed (RPM) sensor	Above the flywheel.
10	Mass air flow (MAF) sensor + intake air temperature (IAT) sensor, intake	The intake manifold.
11	Engine coolant temperature (ECT) sensor	The thermostat housing.
12	Pressure sensor, intake	Engine, flywheel side.
13	Engine control module (ECM)	The air cleaner (ACL) module.
14	Knock sensor (KS)	The cylinder block, under the air cleaner (ACL) module.
15	Engine cooling fan (FC) control module
16	Oil level sensor	Placed in the oil sump
17	Oil pressure switch	Lower front edge of the engine.
18	Throttle unit	The intake manifold.
19	Fuel pressure/fuel temperature sensor	Fuel rail right face

Engine Control Module (ECM) - Component Location (544 Body): Overview Volvo S40 II