Without EGR cooler

Fig 1: Control System Components Location - Engine Compartment (Without EGR Cooler)

Courtesy of MAZDA MOTORS CORP.

CONTROL SYSTEM COMPONENT OPERATIONS

Component No.	Refer to
1	Ion sensor
2	Intake CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION (VIN M) .)
3	Coolant control valve position sensor
4	MAF sensor/IAT sensor No. 1 (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 1 REMOVAL/INSTALLATION (VIN M) .) (See MASS AIR FLOW (MAF) SENSOR INSPECTION (VIN M) .) (See IAT SENSOR NO. 1 INSPECTION (VIN M) .)
5	PCM (BARO sensor) (See BAROMETRIC PRESSURE (BARO) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION (VIN M) .) (See PCM REMOVAL/INSTALLATION (VIN M) .) (See PCM INSPECTION (VIN M) .)
6	TP sensor (See THROTTLE POSITION (TP) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See THROTTLE POSITION (TP) SENSOR INSPECTION (VIN M) .)
7	Engine oil level sensor (See ENGINE OIL LEVEL SENSOR REMOVAL/INSTALLATION (VIN M) .) (See ENGINE OIL LEVEL SENSOR INSPECTION (VIN M) .)
8	MAP sensor/IAT sensor No. 2 (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 2 REMOVAL/INSTALLATION (VIN M) .) (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION (VIN M) .) (See IAT SENSOR NO. 2 INSPECTION (VIN M) .)
9	KS (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION (VIN M) .) (See KNOCK SENSOR (KS) INSPECTION (VIN M) .)
10	Fuel pressure sensor (See HIGH FUEL PRESSURE SENSOR REMOVAL/INSTALLATION (VIN M) .) (See HIGH FUEL PRESSURE SENSOR INSPECTION (VIN M) .)