Mazda2002–2005Technical specifications

MPV 3.0: Technical specifications

Workshop data for the 3-litre petrol (engine code AJ). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Summary

Match the engine code (AJ) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Mazda
Model: MPV
Years: 2002–2005
Fuel: Petrol
Engine code: AJ

Performance & efficiency

Power: 145 kW (197 hp)
Engine size: 2,967 cc
Cylinders: 6 · DOHC
Compression ratio: 9.7:1
Fuel system: Mazda

Fluids & capacities

Engine oil (with the filter): 5.7 litres

All 111 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	6/DOHC
Capacity (Fiscal) cc	2967
Compression ratio :1	9,7
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Mazda
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Mazda
Fuel system Description	MFI-s
Air metering Type	Mass
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil supply voltage + with ballast V	12,0
Primary resistance Ohm	0,51-0,53
Secondary resistance Ohm	4600-5600

Firing order

The firing order for the Mazda MPV 3.0 (2002–2005) is 1-4-2-5-3-6.

Firing order	1-4-2-5-3-6

Valve clearances

Valve clearances on the Mazda MPV 3.0 (2002–2005) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mm	Hydraulic
Valve clearance - EXHAUST mm	Hydraulic

Engine oil & fluids

Engine oil

The Mazda MPV 3.0 (2002–2005) takes 5.7 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

The manual gearbox has a listed capacity of 2.3-2.7 litres. The specified oil is SAE 75W-90 semi-synthetic.

Coolant

The listed total cooling-system capacity is 10.2-10.6 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	➞40°C
Engine oil grade SAE	5W-20
Engine oil classification API/ACEA	SL/A3
Ambient temperature range	➞40°C
Engine oil grade SAE	5W-30
Engine oil classification API/ACEA	SL/A3, A5
Ambient temperature range	-25°C➞45°C
Engine oil grade SAE	10W-40
Engine oil classification API/ACEA	SL/A3
Engine with filter(s) litres	5.7
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90 Semi-synthetic
Manual transmission litres	2.3-2.7
Automatic transmission fluid Type	Dexron II
Automatic transmission (drain & refill) litres	9.7
Cooling system - total capacity litres	10.2-10.6
Cooling system
Brake fluid Type	DOT 3/4
Power steering fluid Type	Dexron II
Power steering fluid litres	1.0

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda MPV 3.0 (2002–2005) are replaced at a minimum thickness of 26 mm (ventilated) front; the rear brake drums are replaced at a maximum diameter of 255,5 mm.

Minimum disc thickness for replacement - ventilated Front	26 mm
Maximum drum diameter for replacement Rear	255,5 mm

Brake disc and drum dimensions

Disc runout Front	0,05 mm
Minimum pad thickness Front	2 mm
Minimum shoe thickness Rear	1 mm
Parking brake travel No. of notches	4-5

Service & electrical

Battery

The Mazda MPV 3.0 (2002–2005) uses a 12 V, 52 Ah battery.

Battery V/RC(Ah)	12 (52)

Tuning and emissions

Ignition timing - basic BTDC °Engine/rpm	10±1/685 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	635-735 Not adjustable
Oil temperature °C	80
CO level at idle speed - tailpipe Vol. % CO	0,5 Max Not adjustable
HC level at idle speed ppm	100
CO2 level at idle speed Vol. % CO2	14,5-16
O2 level at idle speed Vol. % O2	0,1-0,5
Increased idle speed for CO test rpm	2500-2800
CO content at increased idle speed Vol. %	0,3
Lambda at increased idle λ	0,97-1,03

Starting and charging

Maximum cranking amps A	180
Alternator output A/V/rpm	100/12

Service checks and adjustments

Compression pressure bar	11,0-16,0
Oil pressure bar/rpm	1,4-3,1/1500
Radiator cap bar	0,95-1,25
Thermostat opens °C	84-88

Fuel system

System pressure bar	4,4-4,5
Engine coolant temperature (ECT) sensor Ohm/°C	290-400/80
Injector Ohm	13,1-14,5
Lambda sensor (Oxygen) heater Ohm	3,0-30,0

Spark plugs

Spark plugs Original equipment	Motorcraft
Spark plug Type	AWSF-32WM
Electrode gap mm	1,3-1,4

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Mazda MPV 3.0 (2002–2005) are tightened in 3 stages: 32-38 Nm, then slacken off 360°, then a final 32-38 Nm.

Cylinder head
Renew bolts	Yes
Tighten	32-38 Nm
Tighten	85°-95°
Slacken off	360°
Tighten	32-38 Nm
Tighten	85°-95°
Tighten	85°-95°

Other engine tightening torques
Cylinder head instructions	—
Oil pump to cylinder block	8-12 Nm
Sump bolts	20-30 Nm
Sump drain bolt	22-30 Nm
Flywheel/driveplate	100±2 Nm/80±7 Nm
Clutch pressure plate	25-33 Nm
Crankshaft pulley/damper centre bolt	—
Crankshaft pulley
Camshaft carrier/cap	8-12 Nm
Camshaft/rocker cover	8-12 Nm
Inlet manifold to cylinder head	8-12 Nm
Exhaust manifold to cylinder head	20-25 Nm
Exhaust downpipe to manifold	38-51 Nm
Spark plugs	10-24 Nm
Fuel rail	8-12 Nm
Crankshaft position (CKP) sensor/engine speed (RPM) sensor	8-12 Nm
Camshaft position (CMP) sensor	8-12 Nm
Lambda sensor (Oxygen)	30-49 Nm
Knock sensor (KS)	19-30 Nm
Engine oil pressure switch	12-17 Nm
Chassis tightening torques
Front hub	236-274 Nm
Bolts/nuts
Rear hub	—
Rear hub
Steering wheel	50-52 Nm
Steering rack/box mounting	75-104 Nm
Steering track rod end	30-44 Nm
Brake caliper to carrier Front	84-93 Nm
Brake caliper/carrier to hub Front	89-107 Nm
ABS sensor Front	19-25 Nm
ABS sensor Rear	19-25 Nm
Road wheels	108-147 Nm

Air conditioning

Refrigerant quantity
No. of AC service connectors	2
Air conditioning restrictor type	Expansion valve
Compressor clutch/magnetic coupling	Yes
Compressor variable displacement solenoid	No
Air conditioning refrigerant Type	R134a
Air conditioning refrigerant quantity grams	650
Air conditioning oil group	PAG
Air conditioning oil Type	Dens Oil 8
Air conditioning oil quantity cm³	160
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Mazda MPV 3.0?

The firing order for the Mazda MPV 3.0 (2002–2005) is 1-4-2-5-3-6.

How much oil does the Mazda MPV 3.0 take?

The Mazda MPV 3.0 (2002–2005) takes 5.7 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.

What are the valve clearances for the Mazda MPV 3.0?

Valve clearances on the Mazda MPV 3.0 (2002–2005) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Mazda MPV 3.0?

The cylinder head bolts on the Mazda MPV 3.0 (2002–2005) are tightened in 3 stages: 32-38 Nm, then slacken off 360°, then a final 32-38 Nm.

What is the minimum brake disc thickness for the Mazda MPV 3.0?

Brake discs on the Mazda MPV 3.0 (2002–2005) are replaced at a minimum thickness of 26 mm (ventilated) front; the rear brake drums are replaced at a maximum diameter of 255,5 mm.

What battery does the Mazda MPV 3.0 use?

The Mazda MPV 3.0 (2002–2005) uses a 12 V, 52 Ah battery.