Engine & identification
Vehicle identification
| No. of cylinders Type | 4/DOHC |
|---|---|
| Capacity (Fiscal) cc | 1329 |
| Compression ratio :1 | 11,5 |
| 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 | Mass/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 1.33 VVT-i (2008–2015) is 1-3-4-2.
| Firing order | 1-3-4-2 |
|---|
Valve clearances
Valve clearances on the Toyota iQ 1.33 VVT-i (2008–2015) 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 Toyota iQ 1.33 VVT-i (2008–2015) takes 3.5-3.7 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 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
| Preferred engine oil | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 0W-20 |
| Engine oil classification ILSAC | GF-4 |
| Engine oil classification API/ACEA | SL |
| 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 |
| Ambient temperature range | -18°C➞ |
| Engine oil grade SAE | 10W-30 |
| Engine oil classification ILSAC | GF-4 |
| Engine oil classification API/ACEA | SL |
| 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 |
| Engine with filter(s) litres | 3.5-3.7 |
| 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 | 4,7 CVT=4,9 |
| Brake fluid Type | DOT 3 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Toyota iQ 1.33 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
Tuning and emissions
| Ignition timing - basic BTDC °Engine/rpm | 10±2/600 Not adjustable |
|---|---|
| Ignition timing - alternative °Engine/rpm | CVT=10±2/650 Not adjustable |
| Ignition advance checks °Engine/rpm | ECM Controlled |
| Idle speed rpm | 600±50 Not adjustable |
| Idle speed - alternative rpm | CVT=650±50 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 | 9,0-12,0 |
|---|---|
| Oil pressure bar/rpm | Min 0,3/600 |
| 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 |
| Injector Ohm | 11,6-12,4 |
| Lambda sensor (Oxygen) heater Ohm | 11,0-16,0 |
| Throttle motor Ohm | 3,0-100 |
Spark plugs
| Spark plugs Original equipment | Denso |
|---|---|
| Spark plug Type | SC20HR11 |
| Electrode gap mm | 1,0-1,1 |
Tightening torques
Cylinder head bolt torque
The cylinder head bolts on the Toyota iQ 1.33 VVT-i (2008–2015) are tightened in 4 stages: 16 Nm, then 32 Nm, then 90°, then a final 90°.
| Cylinder head | |
|---|---|
| Maximum bolt length | 128,2 mm |
| Tighten | 16 Nm |
| Tighten | 32 Nm |
| Tighten | 90° |
| Tighten | 90° |
| Cylinder head instructions | — |
|---|---|
| View more information | — |
| Other engine tightening torques | |
| Main bearings Renew bolts/nuts | — |
| View more information | — |
| Main bearings | |
| Main bearings Stage 1 | 30 Nm |
| Main bearings Stage 2 | 90° |
| 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 | 21 Nm |
| View more information | — |
| Sump bolts | |
| Sump drain bolt | 30 Nm |
| Flywheel/driveplate | 78 Nm/88 Nm |
| Clutch pressure plate | 19 Nm |
| Crankshaft pulley/damper centre bolt | 128 Nm |
| Camshaft sprocket/gear | 54 Nm |
| Camshaft carrier/cap | — |
| View more information | — |
| Various bolt types are used. Do not mix bolt types. Assemble components within 3 minutes and tighten bolts within 15 minutes. Do NOT start engine for 2 hours. | |
| Camshaft/rocker cover | 10 Nm |
| View more information | — |
| Camshaft/rocker cover | |
| Inlet manifold to cylinder head | 24 Nm |
| Exhaust manifold to cylinder head | 32 Nm |
| Exhaust downpipe to manifold | 43 Nm |
| Water pump | — |
| Water pump | |
| Spark plugs | 20 Nm |
| Fuel rail | 28 Nm |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor | 10 Nm |
| Camshaft position (CMP) sensor | 10 Nm |
| Engine coolant temperature (ECT) sensor | 20 Nm |
| Lambda sensor (Oxygen) | 44 Nm |
| Knock sensor (KS) | 21 Nm |
| Engine oil pressure switch | 15 Nm |
| Oil filter | 40 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 1.33 VVT-i?
The firing order for the Toyota iQ 1.33 VVT-i (2008–2015) is 1-3-4-2.
How much oil does the Toyota iQ 1.33 VVT-i take?
The Toyota iQ 1.33 VVT-i (2008–2015) takes 3.5-3.7 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 iQ 1.33 VVT-i?
Valve clearances on the Toyota iQ 1.33 VVT-i (2008–2015) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the cylinder head torque for the Toyota iQ 1.33 VVT-i?
The cylinder head bolts on the Toyota iQ 1.33 VVT-i (2008–2015) are tightened in 4 stages: 16 Nm, then 32 Nm, then 90°, then a final 90°.
What is the minimum brake disc thickness for the Toyota iQ 1.33 VVT-i?
Brake discs on the Toyota iQ 1.33 VVT-i (2008–2015) are replaced at a minimum thickness of 18 mm (ventilated) front and 7,5 mm rear.