Engine & fuel system
2 documented faults — symptoms, causes and workshop fixes.
Engine idle speed fluctuates between 1000-1500rpm when high electrical load applied
Overview
- Affects
- All models with 3ZZ-FE engine code, →01/06.
- Remedy
- Fit modified part
Cause
Engine control module (ECM) software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Fit modified engine control module (ECM).
Data: Motorwise Workshop. Bulletin 3.
Ticking noise from top half of engine
Overview
- Affects
- All models with 3ZZ-FE/4ZZ-FE engine codes, →06/07.
- Parts
- 3 parts
Cause
Unsatisfactory design of hydraulic tappets.
Repair
- Remove all hydraulic tappets and check for damage.
- Replace damaged hydraulic tappets and associated valves.
Parts3 parts
| Part | Part number | Qty |
|---|---|---|
| Hydraulic tappet | Refer to manufacturer | As required |
| Inlet valve | 13711-22040 | As required |
| Exhaust valve | 13715-22040 | As required |
Data: Motorwise Workshop. Bulletin 4.
Electrical & ignition
1 documented fault — symptoms, causes and workshop fixes.
One or both headlamps do not operate when switched on
Cause
Internal failure of combination switch.
Repair
- Replace combination switch.
Data: Motorwise Workshop. Bulletin 5.
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.
Clutch & gearbox
1 documented fault — symptoms, causes and workshop fixes.
Squeaking noise when clutch pedal depressed or released
Symptoms
Erratic clutch pedal action. Gears difficult to engage.
Cause
Faulty clutch master cylinder.
Repair
- Fit modified clutch master cylinder.
Data: Motorwise Workshop. Bulletin 2.
Glossary
Technical terms used in this guide.
- ECM
- Engine control module — the electronic unit that manages the engine
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
Frequently asked questions
What are the common faults with the Toyota Corolla Verso CombiVan 1.6?
This guide contains five workshop bulletins for the Toyota Corolla Verso CombiVan 1.6. Of these, two concern the engine and fuel system and one the electrical and ignition. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Corolla Verso CombiVan 1.6 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 Verso CombiVan 1.6 faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.