Toyota Yaris: Fuel System / System Diagram
SYSTEM DIAGRAM
HIGH PRESSURE SIDE FUEL SYSTEM WIRING DIAGRAM
LOW PRESSURE SIDE FUEL SYSTEM WIRING DIAGRAM

PARTS LOCATION ILLUSTRATION
*1 FUEL PUMP *2 FUEL SENDER GAUGE ASSEMBLY *3 NO. 2 FUEL SENDER GAUGE ASSEMBLY *4 FUEL PUMP CONTROL ECU *5 FUEL TANK ASSEMBLY *6 FUEL TANK VENT TUBE WITH SENDER GAUGE ASSEMBLY *7 FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY *8 FUEL MAIN VALVE ASSEMBLY *9 NO...
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK (a) Check fuel pump operation. (1) Connect the GTS to the DLC3. (2) Turn the ignition switch to ON...
Other information:
ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION:
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
To prevent burns, do not remove the oil pressure and temperature sensor while the engine is hot...
DESCRIPTION Problem Symptom Suspected Area Trouble Area
Engine does not crank
Engine cranks slowly
Auxiliary battery depletion
Starter malfunction
Starter system
Auxiliary battery depletion
Starter malfunction
Starter circuit
Excessive engine friction Engine Engine assembly
Starting time is long
Engine speed fluctuation due to abnormal combustion
Idle speed too low or high
The engine stalls immediately after starting
Strong engine vibration due to above symptoms
Ignition malfunction
Deviation in air fuel ratio (Excessive or insufficient intake air volume or fuel supply)
Insufficient compression
Changes in load from another system
Ignition system
Spark plug
Ignition coil assembly
Fuel system
Direct fuel injector assembly
Port fuel injector assembly
Fuel pump assembly (for high pressure side)
Fuel pump (for low pressure side)
Fuel pump control circuit
Fuel suction plate sub-assembly
Fuel main valve assembly
Fuel line
Purge VSV system
Fuel quality (existence of foreign matter, degradation)
Intake and exhaust systems
Mass air flow meter sub-assembly
Intake system
(Air leaks or deposit accumulation)
Throttle body with motor assembly
Air fuel ratio sensor (sensor 1)
Air fuel ratio sensor (sensor 2)
Cam timing oil control solenoid assembly
Variable Valve Timing system (VVT system)
Other control systems
ECM
Wire harness or connector
Knock control sensor
Engine coolant temperature sensor
Immobiliser system
Engine
Water control valve
Engine assembly
Crankshaft position sensor
High load from another system
Air conditioning system
Power steering system
Electrical load signal system
SYMPTOM AND CAUSE OF SYSTEM MALFUNCTION HINT: The following are descriptions of the characteristics of each system malfunction...
Categories

Smart key
Auxiliary key
Key code number plate
To use the auxiliary key, press the knob and pull out the auxiliary key
from the smart key.

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