Engine & fuel system
4 documented faults — symptoms, causes and workshop fixes.
Noise from auxiliary drive belt when starting engine from cold
Overview
- Affects
- All models with 1SZ-FE/2SZ-FE engine codes, →08/06.
- Remedy
- Fit new part
- Parts
- 4 parts
Cause
Insufficient tension of auxiliary drive belt.
Repair
- Fit new auxiliary drive belt.
- Tension auxiliary drive belt to manufacturer's specification.
Parts4 parts
| Part | Part number | Qty |
|---|---|---|
| Auxiliary drive belt - 1,0 with AC | 90080-91199 | 1 |
| Auxiliary drive belt - 1,0 without AC | 90080-91198 | 1 |
| Auxiliary drive belt - 1,3 with AC | 99366-K1770 | 1 |
| Auxiliary drive belt - 1,3 without AC | 90080-91198 | 1 |
Data: Motorwise Workshop. Bulletin 4.
Abnormal noise from exhaust when engine idling at operating temperature
Cause
Unsatisfactory design of rear exhaust silencer gasket.
Repair
- Fit modified rear exhaust silencer gasket.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Rear exhaust silencer gasket | 17451-0J011 | 1 |
Data: Motorwise Workshop. Bulletin 5.
Oil leak from front of engine
Cause
Unsatisfactory design of timing chain cover.
Repair
- Fit modified timing chain cover.
Data: Motorwise Workshop. Bulletin 6.
Engine malfunction indicator lamp (MIL) illuminated. Trouble code stored: P1656
Overview
- Affects
- All models with 1NZ-FE/2NZ-FE engine codes.
- Fault codes
P1656
Cause
Camshaft position (CMP) oil pressure valve not operating properly due to inferior quality engine oil.
Repair
- Flush engine oil system with a suitable flushing oil.
- Change engine oil and filter.
Data: Motorwise Workshop. Bulletin 8.
Electrical & ignition
1 documented fault — symptoms, causes and workshop fixes.
Whistling noise when driving with front door window open
Cause
Poor manufacture of door mirror.
Repair
- Renew door mirror.
Data: Motorwise Workshop. Bulletin 3.
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.
Body & trim
2 documented faults — symptoms, causes and workshop fixes.
Buzzing or rattling noises from front seat belt and seat belt buckle
Overview
- Affects
- All models built in Japan.
Cause
Seat belt upper anchorage point trim panel vibrating.
Seat belt buckle vibrating against seat side trim panel.
Repair
- Apply felt tape to back of seat belt upper anchorage point trim panel.
- Apply felt tape to seat belt buckle.
Data: Motorwise Workshop. Bulletin 2.
Bonnet will not open
Cause
Unsatisfactory design of bonnet release cable.
Repair
- Fit modified bonnet release cable.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Bonnet release cable | 53630-0D011 | 1 |
Data: Motorwise Workshop. Bulletin 7.
Glossary
Technical terms used in this guide.
- CMP
- Camshaft position — a sensor that tells the engine control module where the camshaft is
- Auxiliary Drive Belt
- The belt that drives the alternator, water pump, steering pump or air-conditioning compressor
Frequently asked questions
What are the common faults with the Toyota Yaris 1.3?
This guide contains eight workshop bulletins for the Toyota Yaris 1.3. Of these, four concern the engine and fuel system and two the body and trim. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Yaris 1.3 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 Yaris 1.3 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.