Toyota2008–2015Technical specifications

iQ 1.0 VVT-i: Technical specifications

Workshop data for the 1-litre petrol (engine code 1KR-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 (1KR-FE) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: iQ
Years: 2008–2015
Fuel: Petrol
Engine code: 1KR-FE

Performance & efficiency

Power: 50 kW (68 hp)
Engine size: 998 cc
Cylinders: 3 · DOHC
Compression ratio: 10.5:1
Fuel system: Toyota

Fluids & capacities

Engine oil (with the filter): 3.1 litres

All 126 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	3/DOHC
Capacity (Fiscal) cc	998
Compression ratio :1	10,5
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Toyota
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Toyota
Fuel system Description	MFI-s
Air metering Type	MAP
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 iQ 1.0 VVT-i (2008–2015) is 1-2-3.

Firing order	1-2-3

Valve clearances

Valve clearances for the Toyota iQ 1.0 VVT-i (2008–2015) are 0,15-0,23 mm inlet and 0,28-0,36 mm exhaust, measured cold.

Valve clearance - INLET mm	0,15-0,23 cold
Valve clearance - EXHAUST mm	0,28-0,36 cold

Engine oil & fluids

Engine oil

The Toyota iQ 1.0 VVT-i (2008–2015) takes 3.1 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 2.4 litres. The specified oil is SAE 75W, with classification GL-4.

Coolant

See the reference table for the complete coolant entries and their conditions.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Preferred engine oil
Ambient temperature range	All temperatures
Engine oil grade SAE	0W-20 Synthetic
Engine oil classification ILSAC	GF-4
Engine oil classification API/ACEA	SL/A1, A3
Engine oil options
Ambient temperature range	All temperatures
Engine oil grade SAE	5W-20, 5W-30
Engine oil classification ILSAC	GF-4
Engine oil classification API/ACEA	SL/A1, A3
Ambient temperature range	-18°C➞
Engine oil grade SAE	10W-30 Synthetic
Engine oil classification ILSAC	GF-4
Engine oil classification API/ACEA	SL/A1, A3
Ambient temperature range	-12°C➞
Engine oil grade SAE	15W-40
Engine oil classification API/ACEA	SL
Ambient temperature range	-7°C➞
Engine oil grade SAE	20W-50
Engine oil classification API/ACEA	SL/A1, A3
Engine with filter(s) litres	3.1
Other lubricants and capacities
Manual transmission oil grade SAE	75W
Manual transmission oil classification	GL-4
Manual transmission litres	2.4
Automatic transmission fluid Type	Toyota CVT
Automatic transmission (drain & refill) litres	—
View more information	—
If 'D' shift indicator flashes, switch ignition OFF. Allow ATF to cool, then repeat above procedure.
Automatic transmission (dry fill) litres	6.4
View more information	—
Coolant Type	Toyota SLLC
Coolant Colour	Pink
Cooling system - total capacity litres	4,3 CVT=4,5
Brake fluid Type	DOT 3

Brakes & wear limits

Brake disc thickness

Brake discs on the Toyota iQ 1.0 VVT-i (2008–2015) are replaced at a minimum thickness of 18 mm (ventilated) front and 7,5 mm rear.

Minimum disc thickness for replacement - ventilated Front	18 mm
Minimum disc thickness for replacement Rear	7,5 mm
Maximum drum diameter for replacement Rear	181 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
Minimum shoe thickness Rear	1 mm
Parking brake travel No. of notches	—

Service & electrical

Spark plugs

The Toyota iQ 1.0 VVT-i (2008–2015) uses Denso SK16HR11 spark plugs with a 1,1 mm electrode gap.

Spark plugs Original equipment	Denso
Spark plug Type	SK16HR11
Electrode gap mm	1,1

Tuning and emissions

Ignition timing - basic BTDC °Engine/rpm	10±2/775 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	775±125 Not adjustable
Oil temperature °C	80
CO level at idle speed - tailpipe Vol. % CO	0,2 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	2500-3000
CO content at increased idle speed Vol. %	0,2
Lambda at increased idle λ	0,97-1,03

Service checks and adjustments

Compression pressure bar	10,8-14,2
Oil pressure bar/rpm	Min 0,3/750
Radiator cap bar	0,78-1,23
Thermostat opens °C	80-84

Fuel system

Regulated pressure with vacuum bar	3,0-3,4
Engine coolant temperature (ECT) sensor Ohm/°C	2320-2590/20
Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm	1630-2740
Injector Ohm	11,6-12,4
Lambda sensor (Oxygen) heater Ohm	11,0-16,0
Throttle motor Ohm	3,0-100

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Toyota iQ 1.0 VVT-i (2008–2015) are tightened in 3 stages: 16 Nm, then 32 Nm, then a final 180°.

Cylinder head
Maximum bolt length	123,5 mm
Tighten	16 Nm
Tighten	32 Nm
Tighten	180°

Other engine tightening torques
Cylinder head instructions	—
Main bearings Renew bolts/nuts	No
Main bearings Stage 1	30 Nm
Main bearings Stage 2	59 Nm
Big end bearings Renew bolts/nuts	—
View more information	—
Big end bearings
Big end bearings Stage 1	15 Nm
Big end bearings Stage 2	90°
Sump bolts	—
Sump bolts
Sump drain bolt	30 Nm
Flywheel/driveplate	1)39 Nm 2)78 Nm
Clutch pressure plate	19 Nm
Crankshaft pulley/damper centre bolt	180 Nm
Camshaft sprocket/gear	47 Nm
Camshaft carrier/cap	13 Nm
Camshaft/rocker cover	8 Nm
Inlet manifold to cylinder head	30 Nm
Exhaust manifold to cylinder head	28 Nm
Water pump	24 Nm
Spark plugs	25 Nm
Fuel rail	27 Nm
Crankshaft position (CKP) sensor/engine speed (RPM) sensor	8 Nm
Camshaft position (CMP) sensor	8 Nm
Engine coolant temperature (ECT) sensor	20 Nm
Lambda sensor (Oxygen)	44 Nm
Knock sensor (KS)	20 Nm
Engine oil pressure switch	10 Nm
Oil filter	10 Nm
Chassis tightening torques
Front hub	216 Nm
Rear hub - wheel bearing housing bolts	90 Nm
Steering wheel	50 Nm
Steering rack/box mounting	87 Nm
Steering track rod end	59 Nm
Brake caliper to carrier Front	34 Nm
Brake caliper/carrier to hub Front	107 Nm
Brake caliper to carrier Rear	34 Nm
Brake caliper/carrier to hub Rear	57 Nm
ABS sensor Front	9 Nm
Road wheels	103 Nm

Air conditioning

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	360±30
Air conditioning oil group	PAG
Air conditioning oil Type	Dens Oil 8
Air conditioning oil quantity cm³	100+15
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Toyota iQ 1.0 VVT-i?

The firing order for the Toyota iQ 1.0 VVT-i (2008–2015) is 1-2-3.

What spark plugs does the Toyota iQ 1.0 VVT-i use?

The Toyota iQ 1.0 VVT-i (2008–2015) uses Denso SK16HR11 spark plugs with a 1,1 mm electrode gap.

How much oil does the Toyota iQ 1.0 VVT-i take?

The Toyota iQ 1.0 VVT-i (2008–2015) takes 3.1 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 iQ 1.0 VVT-i?

Valve clearances for the Toyota iQ 1.0 VVT-i (2008–2015) are 0,15-0,23 mm inlet and 0,28-0,36 mm exhaust, measured cold.

What is the cylinder head torque for the Toyota iQ 1.0 VVT-i?

The cylinder head bolts on the Toyota iQ 1.0 VVT-i (2008–2015) are tightened in 3 stages: 16 Nm, then 32 Nm, then a final 180°.

What is the minimum brake disc thickness for the Toyota iQ 1.0 VVT-i?

Brake discs on the Toyota iQ 1.0 VVT-i (2008–2015) are replaced at a minimum thickness of 18 mm (ventilated) front and 7,5 mm rear.