Brakes
1 documented fault — symptoms, causes and workshop fixes.
Brakes squeal
Overview
- Affects
- All models.
Cause
Replacement brake pads fitted without anti-squeal shims.
Repair
- Ensure brake pad anti-squeal shims are fitted.
- Replacement shims available separately.
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
| 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 3.
Other
1 documented fault — symptoms, causes and workshop fixes.
Excessive noise from auxiliary drive belt
Cause
Auxiliary drive belt tensioner pulley damaged.
Repair
- Renew auxiliary drive belt tensioner pulley.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Tensioner pulley | 13570-22010 | 1 |
Data: Motorwise Workshop. Bulletin 2.
Glossary
Technical terms used in this guide.
- VIN
- Vehicle identification number — 17 characters, found at the base of the windscreen and on the V5C logbook
- 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
- Auxiliary Drive Belt
- The belt that drives the alternator, water pump, steering pump or air-conditioning compressor
- 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 1.4?
This guide contains three workshop bulletins for the Toyota Corolla 1.4. Of these, one concerns the brakes and one the air conditioning and heating. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Corolla 1.4 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 1.4 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.