Toyota2005–2007

Corolla 1.8 Supercharged 218 hp: Common faults & known problems

Common faults & known problems

3 known faults documented in workshop bulletins. Of these, one concerns the electrical and ignition and one the clutch and gearbox. Symptoms, causes, repair steps and part numbers are shown where supplied.

Technical specifications

Electrical & ignition

1 documented fault — symptoms, causes and workshop fixes.

One or both headlamps do not operate when switched on

Affects All models.

Cause

Internal failure of combination switch.

Repair

Replace combination switch.

Data: Motorwise Workshop. Bulletin 3.

Clutch & gearbox

1 documented fault — symptoms, causes and workshop fixes.

Squeaking noise when clutch pedal depressed or released

Affects rightHandAll models with manual transmission, →02/05. leftHandAll models with manual transmission, →03/05.Fit modified part

Symptoms

Erratic clutch pedal action. Gears difficult to engage.

Cause

Faulty clutch master cylinder.

Repair

Fit modified clutch master cylinder.

Data: Motorwise Workshop. Bulletin 1.

Air conditioning & heating

1 documented fault — symptoms, causes and workshop fixes.

Musty odour from air conditioning (AC) when operating

Overview

Affects: All models with air conditioning (AC).
Remedy: Fit modified part
Parts: 3 parts

Cause

Faulty AC evaporator temperature sensor.

Faulty AC amplifier.

Repair

Models with ATC: Fit modified AC evaporator temperature sensor. Fit modified AC amplifier.
Models with MTC: Fit modified AC evaporator temperature sensor. Fit auxiliary wiring harness between AC evaporator temperature sensor and AC wiring harness.

Parts3 parts

Parts listed in the bulletin
Part	Part number	Qty
AC evaporator temperature sensor	88620-12080	1
AC amplifier	88650-12A11	1
Auxiliary wiring harness	22648-12750	1

Data: Motorwise Workshop. Bulletin 2.

Glossary

Technical terms used in this guide.

AC: Air conditioning — the system that cools the cabin
ATC: Automatic temperature control — climate control that holds the temperature you set
Wiring Harness: The bundled cables that carry power and signals around the vehicle
Evaporator: The air-conditioning heat exchanger in the dashboard that cools the cabin air

Frequently asked questions

What are the common faults with the Toyota Corolla 1.8 Supercharged?

This guide contains three workshop bulletins for the Toyota Corolla 1.8 Supercharged. Of these, one concerns the electrical and ignition and one the clutch and gearbox. Symptoms, causes, repair steps and part numbers are shown where supplied.

Does every Toyota Corolla 1.8 Supercharged have these faults?

No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.

Can I check for Toyota Corolla 1.8 Supercharged faults myself?

Many of them. The documented symptoms can be seen, heard or felt during a test drive.