Toyota 1 MZ–FE Manual page 487

DIAGNOSTIC CHART
Check air induction system.
Check heated oxygen sensor data.
Check fuel pressure.
Check injector injection.
Check mass air flow meter and engine coolant
temp. sensor
Check for spark and ignition.
Check and replace ECM.
1MZ–FE ENGINE – CIRCUIT INSPECTION
Repair or replace.
Check heated oxygen sensor.
Check and repair fuel pump, pressure
regulator, fuel pipe line and filter.
Replace injector.
Repair or replace.
Repair or replace.
EG2–487