Parts for your 2006 Toyota Vitz|yaris-Fuel pump

2006 Toyota Vitz/Yaris fuel pump — what it does and when to service it

According to Toyota’s technical literature for the XP90 platform — including the New Car Features guide, the Repair Manual (Engine/EFI sections) and the Toyota Electronic Parts Catalogue — every 2006 Toyota Vitz/Yaris petrol variant (1KR‑FE, 2SZ‑FE, 1NZ‑FE) runs an in‑tank electric fuel pump module, listed as the “Pump Assy, Fuel Tank” with VIN‑specific part numbers in the 77020‑xxxxx range. So yes, a fuel pump is absolutely fitted and is essential to how this car runs.

The fuel pump’s job is pretty straightforward: it draws petrol from the tank and supplies steady pressure to the injectors, typically around 300–350 kPa at the rail as specified in the Toyota Repair Manual. On this model it’s a returnless system, with the pressure regulator and fine filter integrated into the pump module to reduce vapour and heat. No pump, no go — the engine will crank but won’t fire, or it’ll stumble and cut out under load.

For routine servicing, there’s no scheduled replacement interval for the pump itself. Toyota designed the module as “lifetime” under normal conditions. That said, a bit of care goes a long way:

• Try not to run the tank near empty, fuel cools and lubricates the pump.
• Use good‑quality 91–95 RON petrol and keep up with regular servicing to avoid contamination issues.
• If the car’s been sitting for ages, consider fresh fuel to reduce varnish build‑up.

Common warning signs include a high‑pitched whine from the tank, hard starting, hesitation on hills, sluggish acceleration, or lean fault codes. A proper diagnosis involves checking delivery pressure/flow and voltage at the pump — exactly as outlined in the Toyota Repair Manual’s EFI diagnostics.

When replacement is needed, it’s usually the complete module rather than just the motor. Access is under the rear seat via an inspection cover, relieve fuel pressure, disconnect the battery, label hoses and connectors, replace the seal/O‑ring, and torque the lock ring correctly. Sticking with a genuine Toyota/Denso module or a reputable equivalent is worth it for reliable pressure, quiet running and accurate fuel‑level readings. After installation, verify pressure and check for leaks and any stored DTCs. Done right, the new pump should deliver many years and kilometres of drama‑free motoring.

• Where is the fuel pump on a 2006 Vitz/Yaris, and is it hard to change?
  It sits inside the fuel tank as a single module, accessed from under the rear seat through a round service cover. For a competent DIYer, it’s manageable with care: disconnect the battery, relieve fuel pressure, work in a well‑ventilated area, and mind the lock ring and new O‑ring. Professional replacement is recommended if unsure.
• What are the symptoms of a failing fuel pump on this model?
  Whining from the tank, long cranks, weak acceleration, surging at highway speeds, and lean or low‑pressure fault codes are typical. A fuel pressure test at the rail and a pump current draw check will confirm it.
• Does the 2006 Yaris have a serviceable fuel filter?
  The fine filter is built into the pump module, so there’s no separate external filter to replace on most petrol variants. If the filter is restricted, the fix is usually a complete module swap per Toyota’s service guidance.