Toyota2002–2006Technical specifications

Corolla 1.8: Technical specifications

Workshop data for the 1.8-litre petrol (engine code 1ZZ-FE). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (1ZZ-FE) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: Corolla
Years: 2002–2006
Fuel: Petrol
Engine code: 1ZZ-FE

Performance & efficiency

Power: 99 kW (135 hp)
Engine size: 1,794 cc
Cylinders: 4 · DOHC
Compression ratio: 10.5:1
Fuel system: Toyota

Fluids & capacities

Engine oil (with the filter): 3.7 litres

All 126 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1794
Compression ratio :1	10,5
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Toyota
Ignition system Type	TCCS
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Toyota
Fuel system Type	TCCS
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

Firing order

The firing order for the Toyota Corolla 1.8 (2002–2006) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Toyota Corolla 1.8 (2002–2006) are 0,15-0,25 mm inlet and 0,25-0,35 mm exhaust, measured cold.

Valve clearance - INLET mm	0,15-0,25 cold
Valve clearance - EXHAUST mm	0,25-0,35 cold

Engine oil & fluids

Engine oil

The Toyota Corolla 1.8 (2002–2006) takes 3.7 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 1.9 litres. The specified oil is SAE 75W-90, with classification GL-4/5.

Coolant

The listed total cooling-system capacity is 6.5 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Preferred engine oil
Ambient temperature range	All temperatures
Engine oil grade SAE	5W-30
Engine oil classification API/ACEA	SJ/A1, A3
Engine oil options
Ambient temperature range	-18°C➞38°C
Engine oil grade SAE	10W-30
Engine oil classification API/ACEA	SJ/A1, A3
Ambient temperature range	-12°C➞38°C
Engine oil grade SAE	15W-40
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	-7°C➞38°C
Engine oil grade SAE	20W-50
Engine oil classification API/ACEA	SJ/A2
Engine with filter(s) litres	3.7
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90
Manual transmission oil classification	GL-4/5
Manual transmission litres	1.9
Cooling system - total capacity litres	6.5
Brake fluid Type	DOT 3

Brakes & wear limits

Brake disc thickness

Brake discs on the Toyota Corolla 1.8 (2002–2006) are replaced at a minimum thickness of 23 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - ventilated Front	23 mm
Minimum disc thickness for replacement Rear	8 mm

Brake disc and drum dimensions

Disc runout Front	0,05 mm
Disc runout Rear	0,15 mm
Minimum pad thickness Front	1 mm
Minimum pad thickness Rear	1 mm
Parking brake travel No. of notches	6-8

Service & electrical

Battery

The Toyota Corolla 1.8 (2002–2006) uses a 12 V, 50 Ah battery (reserve capacity 76 minutes).

Battery V/RC(Ah)	12/76 (50)

Spark plugs

The Toyota Corolla 1.8 (2002–2006) uses Denso K16R-U11 spark plugs with a 1,1 mm electrode gap.

Spark plugs Original equipment	Denso
Spark plug Type	K16R-U11
Electrode gap mm	1,1
Spark plugs Make	Bosch
Spark plug Type	FR7KCX
Electrode gap mm	1,0
Spark plugs Make	Champion
Spark plug Type	RC89YCC
Electrode gap mm	0,9
Spark plugs Make	NGK
Spark plug Type	BKR5EYA-11
Electrode gap mm	1,1

Tuning and emissions

Ignition timing - basic BTDC °Engine/rpm	10±2/650 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	650±50 Not adjustable
Idle speed - alternative rpm	AT=700±50 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	2400-2600
CO content at increased idle speed Vol. %	0,3
Lambda at increased idle λ	0,98-1,02

Starting and charging

Maximum cranking amps A	135-165
Alternator output A/V/rpm	70-80/13,6/2000

Service checks and adjustments

Compression pressure bar	10,2-13,3
Oil pressure bar/rpm	3,0-5,5/3000
Radiator cap bar	0,75-1,05
Thermostat opens °C	80-84

Fuel system

RPM/TDC sensor resistance
System pressure bar	3,1-3,5
Engine coolant temperature (ECT) sensor Ohm/°C	2320-2590/20
Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm	—
Injector Ohm	13,4-14,2
Lambda sensor (Oxygen) heater Ohm	11,0-16,0

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Toyota Corolla 1.8 (2002–2006) are tightened in 3 stages: 25 Nm, then 49 Nm, then a final 90°.

Cylinder head
Tighten	25 Nm
Tighten	49 Nm
Tighten	90°

Cylinder head
Cylinder head instructions	—
View more information	—
Other engine tightening torques
Main bearings Renew bolts/nuts	—
View more information	—
Main bearings
Main bearings Stage 1	—
Big end bearings Renew bolts/nuts	—
View more information	—
Big end bearings
Big end bearings Stage 1	20 Nm
Big end bearings Stage 2	90°
Oil pump to cylinder block	9 Nm
Sump bolts	9 Nm
Sump drain bolt	37 Nm
Flywheel/driveplate	49 Nm+90°/88 Nm
Clutch pressure plate	19 Nm
Crankshaft pulley/damper centre bolt	138 Nm
Camshaft sprocket/gear	54 Nm
Camshaft carrier/cap	—
Camshaft carrier/cap
Camshaft/rocker cover	9 Nm
Inlet manifold to cylinder head	30 Nm
Exhaust manifold to cylinder head	37 Nm
Exhaust downpipe to manifold	43 Nm
Water pump	11 Nm
Spark plugs	25 Nm
Fuel rail	19 Nm
Crankshaft position (CKP) sensor/engine speed (RPM) sensor	9 Nm
Camshaft position (CMP) sensor	9 Nm
Engine coolant temperature (ECT) sensor	20 Nm
Lambda sensor (Oxygen)	44 Nm
Knock sensor (KS)	20 Nm
Engine oil pressure switch	15 Nm
Engine upper cover	8 Nm
Chassis tightening torques
Front hub	216 Nm
Steering wheel	50 Nm
Steering rack/box mounting	58 Nm
Steering track rod end	49 Nm
Brake caliper to carrier Front	34 Nm
Brake caliper to carrier
Brake caliper/carrier to hub Front	107 Nm
Brake caliper to carrier Rear	27 Nm
Brake caliper/carrier to hub Rear	47 Nm
Back plate to hub Rear	80 Nm
ABS sensor Front	8 Nm
Road wheels	103 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	490±30
Air conditioning oil group	PAG
Air conditioning oil Type	Dens Oil 8
Air conditioning oil quantity cm³	60±10
Oil type
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Toyota Corolla 1.8?

The firing order for the Toyota Corolla 1.8 (2002–2006) is 1-3-4-2.

What spark plugs does the Toyota Corolla 1.8 use?

The Toyota Corolla 1.8 (2002–2006) uses Denso K16R-U11 spark plugs with a 1,1 mm electrode gap.

How much oil does the Toyota Corolla 1.8 take?

The Toyota Corolla 1.8 (2002–2006) takes 3.7 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 Toyota Corolla 1.8?

Valve clearances for the Toyota Corolla 1.8 (2002–2006) are 0,15-0,25 mm inlet and 0,25-0,35 mm exhaust, measured cold.

What is the cylinder head torque for the Toyota Corolla 1.8?

The cylinder head bolts on the Toyota Corolla 1.8 (2002–2006) are tightened in 3 stages: 25 Nm, then 49 Nm, then a final 90°.

What is the minimum brake disc thickness for the Toyota Corolla 1.8?

Brake discs on the Toyota Corolla 1.8 (2002–2006) are replaced at a minimum thickness of 23 mm (ventilated) front and 8 mm rear.