Toyota Yaris: Sfi System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
SFI System

Symptom

Suspected Area

Link

Engine does not crank (Does not start)

Engine difficult to start

Engine difficult to start

(Vehicle Control History Code: X0810 and/or X0812)

Auxiliary battery

Starter assembly

Starter signal circuit

Entry and start system (for start function)

VC output circuit (ECM 5 V output)

Clutch start switch assembly

Stop and Start System

No initial combustion (Does not start)

Engine difficult to start

Engine difficult to start

(Vehicle Control History Code: X0810 and/or X0812)

Immobiliser system

ECM power source circuit

VC output circuit (ECM 5 V output)

Ignition system

Fuel pump control circuit

Port fuel injector assembly

Direct fuel injector assembly

Crankshaft position sensor

Intake system

Valve timing

No. 1 valve rocker arm sub-assembly*

Engine cranks normally but difficult to start

Engine difficult to start

Engine difficult to start

(Vehicle Control History Code: X0810 and/or X0812)

ECM power source circuit

Throttle body with motor assembly

Fuel pump assembly (for high pressure side)

Engine coolant temperature sensor

Fuel pump control circuit

Ignition system

Spark plug

Compression

Port fuel injector assembly

Direct fuel injector assembly

Crankshaft position sensor

Intake system

Valve timing

No. 1 valve rocker arm sub-assembly*

Incomplete intermittent combustion occurs (Does not start)

Engine difficult to start

Engine difficult to start

(Vehicle Control History Code: X0810 and/or X0812)

Fuel pump control circuit

Ignition system

Port fuel injector assembly

Direct fuel injector assembly

Crankshaft position sensor

Intake system

Valve timing

High engine speed

Throttle body with motor assembly

ECM power source circuit

PCV hose

PCV system

Low engine speed (Poor idle)

Rough idling

Fuel pump control circuit

Throttle body with motor assembly

Port fuel injector assembly

Direct fuel injector assembly

Fuel pump assembly (for high pressure side)

PCV hose

PCV system

Intake system

No. 1 turbo pressure sensor

Rough idle

Rough idling

Throttle body with motor assembly

Port fuel injector assembly

Direct fuel injector assembly

Fuel pump assembly (for high pressure side)

Ignition system

Compression

Fuel pump control circuit

Spark plug

Intake system

Valve timing

No. 1 valve rocker arm sub-assembly*

No. 1 turbo pressure sensor

Hunting (Poor idle)

Rough idling

Throttle body with motor assembly

ECM power source circuit

Fuel pump control circuit

Spark plug

Intake system

Hesitation/Poor acceleration (Poor driveability)

Rough idling

Port fuel injector assembly

Direct fuel injector assembly

Fuel pump control circuit

Lack of Power (Turbocharger System)

Fuel pump assembly (for high pressure side)

Ignition system

Spark plug

Intake system

Valve timing

No. 1 turbo pressure sensor

Waste gate valve (turbocharger sub-assembly)

Waste gate valve actuator assembly (turbocharger sub-assembly)

Air by-pass valve assembly

Turbocharger sub-assembly

No. 1 valve rocker arm sub-assembly*

Brake override system

Lack of power

Lack of power

Lack of power

(Vehicle Control History Code: X0844 and/or X0845)

Lack of Power (Turbocharger System)

No. 1 turbo pressure sensor

Waste gate valve (turbocharger sub-assembly)

Waste gate valve actuator assembly (turbocharger sub-assembly)

Air by-pass valve assembly

Turbocharger sub-assembly

Surging (Poor driveability)

Rough idling

Fuel pump control circuit

Spark plug

Port fuel injector assembly

Direct fuel injector assembly

No. 1 valve rocker arm sub-assembly*

Engine stalls soon after starting

Engine stalls

Fuel pump control circuit

Throttle body with motor assembly

Crankshaft position sensor

Ignition system

Fuel pump assembly (for high pressure side)

Intake system

Valve timing

No. 1 turbo pressure sensor

Engine stalls soon after slow down

Engine stalls

Port fuel injector assembly

Direct fuel injector assembly

Throttle body with motor assembly

ECM

Crankshaft position sensor

Ignition system

Air by-pass valve assembly

MIL (malfunction indicator lamp) malfunction

MIL Circuit

Meter/Gauge system

White smoke emitted

Turbocharger oil leak and white smoke

Turbocharger noise

Turbocharger noise

HINT:

*: Check "Fuel Cut Elapsed Time" in the Data List. If the elapsed time is over 0 sec, then the engine speed is high (the engine speed at which fuel cut occurs + 500 rpm or more). In this situation, there is a possibility that a No. 1 valve rocker arm sub-assembly will become loose and malfunction, check that the No. 1 valve rocker arm sub-assemblies are properly installed.

    Initialization

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    TERMINALS OF ECM HINT: The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Diagnosis System


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    Categories

    Refueling

    Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.

    To open the fuel-filler lid, pull the remote fuel-filler lid release.

    Toyota Yaris. Refueling

    To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.

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