Engine & identification
Vehicle identification
| No. of cylinders Type | 4/DOHC |
|---|---|
| Capacity (Fiscal) cc | 1197 |
| Compression ratio :1 | 10,0 |
| 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(d) |
| 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 1.2 Turbo (2018–2023) is 1-3-4-2.
| Firing order | 1-3-4-2 |
|---|
Valve clearances
Valve clearances on the Toyota Corolla 1.2 Turbo (2018–2023) 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 Corolla 1.2 Turbo (2018–2023) takes 4.0 litres of engine oil with the filter.
The preferred engine oil is SAE 0W-20 for all ambient temperatures, with API/ACEA classification SL.
A listed engine oil option is SAE 5W-30 for all ambient temperatures, with API/ACEA classification SL.
Manual gearbox
The manual gearbox has a listed capacity of 2.4 litres. The specified oil is SAE 75W synthetic, with classification GL-4.
Coolant
The total cooling-system capacity entries are 6.4 litres without a stated condition; 6.6 litres for AT.
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 API/ACEA | SL |
| Engine oil options | |
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | SL |
| Engine with filter(s) litres | 4.0 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | 75W Synthetic |
| Manual transmission oil classification | GL-4 |
| Manual transmission litres | 2.4 |
| Fill transmission with specified amount or until transmission oil level is between 0-5 mm from bottom lip of filler hole, otherwise transmission damage may occur. | |
| Automatic transmission fluid Type | Toyota CVT FE |
| Automatic transmission (drain & refill) litres | — |
| View more information | — |
| If 'D' shift indicator flashes (transmission fluid temperature is above 45°C): Switch ignition OFF. Allow transmission fluid to cool, then repeat steps 3-5. | |
| Automatic transmission (dry fill) litres | 7.47 |
| Automatic transmission fluid | |
| Coolant Type | Toyota SLLC |
| Coolant Colour | Pink |
| Cooling system - total capacity litres | 6,4 AT=6,6 |
| Cooling system | |
| Brake fluid Type | DOT 3/4 |
| Brake fluid litres | — |
| Use diagnostic equipment to carry out bleeding procedure. | |
| Clutch fluid Type | DOT 3/4 |
Brakes & wear limits
Brake disc thickness
Front brake discs on the Toyota Corolla 1.2 Turbo (2018–2023) are replaced at a minimum thickness of 22 mm (ventilated).
| Minimum disc thickness for replacement - ventilated Front | 22 mm |
|---|---|
| Minimum disc thickness for replacement Rear | — |
Brake disc and drum dimensions
| Minimum disc thickness for replacement - solid rear | |
|---|---|
| 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 | 5-8 |
Service & electrical
Battery
The Toyota Corolla 1.2 Turbo (2018–2023) uses a 12 V, 45 Ah battery.
| Battery V/RC(Ah) | 12 (45) |
|---|
Spark plugs
The Toyota Corolla 1.2 Turbo (2018–2023) uses Bosch 0 242 140 565 spark plugs with a 0,7 mm electrode gap.
| Spark plugs Original equipment | NGK |
|---|---|
| Spark plug Type | DILKAR8J9G |
| Electrode gap mm | 0,8-0,9 |
| Spark plugs Make | Bosch |
| Spark plug Type | 0 242 140 565 |
| Electrode gap mm | 0,7 |
| Spark plugs Make | Champion |
| Spark plug Type | REA6PYPB |
| Electrode gap mm | 0,7 |
Tuning and emissions
| Ignition timing - basic BTDC °Engine/rpm | 10±2/650 Not adjustable |
|---|---|
| Ignition timing - alternative °Engine/rpm | 10±2/730 Not adjustable |
| Ignition advance checks °Engine/rpm | ECM Controlled |
| Idle speed rpm | 650±50 Not adjustable |
| Idle speed - alternative rpm | AT=730±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 | 2300-2700 |
| CO content at increased idle speed Vol. % | 0,2 |
| Lambda at increased idle λ | 0,97-1,03 |
Starting and charging
| Alternator output A/V/rpm | 30/13,2-14,8/2000 |
|---|
Service checks and adjustments
| Compression pressure bar | 8,8-10,8 |
|---|---|
| Oil pressure bar/rpm | 0,6 Min/650 |
| Oil pressure can only be checked using diagnostic equipment. | |
| Radiator cap bar | 0,79-1,23 |
| Thermostat opens °C | 80-84 |
Fuel system
| Fuel feed/lift pump delivery pressure bar | 2,0-6,0 |
|---|---|
| Engine coolant temperature (ECT) sensor Ohm/°C | 310-326/80 |
| Injector Ohm | 1,7-2,0 |
| Injector resistance | |
| Lambda sensor (Oxygen) heater Ohm | — |
| Lambda sensor (Oxygen) heater | |
| Throttle motor Ohm | 0,3-100 |
Tightening torques
Cylinder head bolt torque
The cylinder head bolts on the Toyota Corolla 1.2 Turbo (2018–2023) are tightened in 3 stages: 32 Nm, then 90°, then a final 90°.
| Cylinder head | |
|---|---|
| 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 | 40 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° |
| Oil pump to cylinder block | 21 Nm |
| Sump bolts | — |
| View more information | — |
| Assemble components within 3 minutes and tighten bolts within 10 minutes. Wait 2 hours before starting engine or filling engine with oil to allow sealant to dry. | |
| Sump drain bolt | 37 Nm |
| Flywheel/driveplate | — |
| After installing drive plate wait 1 hour before starting engine. | |
| Clutch pressure plate | 19 Nm |
| Crankshaft pulley/damper centre bolt | 180 Nm |
| Camshaft sprocket/gear | 95 Nm |
| Hold camshafts with spanner on hexagons. | |
| Camshaft carrier/cap | — |
| View more information | — |
| Wait 2 hours before starting engine or filling engine with oil to allow sealant to dry. | |
| Camshaft/rocker cover | 10 Nm |
| View more information | — |
| Inlet manifold to cylinder head | 28 Nm |
| Exhaust downpipe to manifold | 43 Nm |
| Water pump | 21 Nm |
| View more information | — |
| Water pump | |
| Spark plugs | 20 Nm |
| Fuel rail | 29 Nm |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor | 10 Nm |
| Camshaft position (CMP) sensor | 10 Nm |
| Lambda sensor (Oxygen) | 44 Nm |
| Knock sensor (KS) | 20 Nm |
| Engine oil pressure switch | 15 Nm |
| Assemble components within 3 minutes. Do not start engine for 1 hour. | |
| Oil filter | 18 Nm |
| Chassis tightening torques | |
| Front hub | 216 Nm |
| View more information | — |
| Front hub | |
| Front hub - wheel bearing housing bolts | 130 Nm |
| Rear hub - wheel bearing housing bolts | 90 Nm |
| Steering wheel | 62 Nm |
| Steering rack/box mounting | 133 Nm |
| Steering track rod end | 49 Nm |
| Steering track rod end | |
| Brake caliper to carrier Front | 30 Nm |
| Brake caliper/carrier to hub Front | 107 Nm |
| Brake caliper to carrier Rear | — |
| Brake caliper to carrier | |
| Brake caliper/carrier to hub Rear | 107 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 | Yes |
| Air conditioning refrigerant Type | R134a/R1234yf |
| Do not mix R134a with R1234yf. | |
| Air conditioning refrigerant quantity grams | 470±30 |
| Air conditioning oil group | PAG |
| Air conditioning oil Type | — |
| Oil type | |
| Air conditioning oil quantity cm³ | 85 |
| Air conditioning oil viscosity ISO | 46 |
Frequently asked questions
What is the firing order of the Toyota Corolla 1.2 Turbo?
The firing order for the Toyota Corolla 1.2 Turbo (2018–2023) is 1-3-4-2.
What spark plugs does the Toyota Corolla 1.2 Turbo use?
The Toyota Corolla 1.2 Turbo (2018–2023) uses Bosch 0 242 140 565 spark plugs with a 0,7 mm electrode gap.
How much oil does the Toyota Corolla 1.2 Turbo take?
The Toyota Corolla 1.2 Turbo (2018–2023) takes 4.0 litres of engine oil with the filter. The preferred engine oil is SAE 0W-20 for all ambient temperatures, with API/ACEA classification SL. A listed engine oil option is SAE 5W-30 for all ambient temperatures, with API/ACEA classification SL.
What are the valve clearances for the Toyota Corolla 1.2 Turbo?
Valve clearances on the Toyota Corolla 1.2 Turbo (2018–2023) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the cylinder head torque for the Toyota Corolla 1.2 Turbo?
The cylinder head bolts on the Toyota Corolla 1.2 Turbo (2018–2023) are tightened in 3 stages: 32 Nm, then 90°, then a final 90°.
What is the minimum brake disc thickness for the Toyota Corolla 1.2 Turbo?
Front brake discs on the Toyota Corolla 1.2 Turbo (2018–2023) are replaced at a minimum thickness of 22 mm (ventilated).