Toyota 1 MZ–FE Manual page 405

If a malfunction code is displayed during the diagnostic trouble code check in check mode, check the
circuit for that code listed in the table below (Proceed to the page given for that circuit).
Open or short in mass air flow meter circuit.
Mass air flow meter
ECM
Mass air flow meter
Open or short in intake air temp. sensor circuit.
Intake air temp. sensor
ECM
Open or short in engine coolant temp. sensor circuit.
Engine coolant temp. sensor
ECM
Engine coolant temp. sensor
Coolant system
Open or short in throttle position sensor circuit.
Throttle position sensor.
ECM
Throttle position sensor
Open or short in heated oxygen sensor circuit.
Heated oxygen sensor.
Heated oxygen sensor
Fuel trim malfunction
Heated oxygen sensor
1MZ–FE ENGINE
Trouble Area
– DIAGNOSTIC TROUBLE CODE CHART
MIL
EG2–405
See Page
Memory
EG2–444
EG2–450
EG2–451
EG2–457
EG2–462
EG2–463
EG2–472
EG2–473
EG2–476
EG2–480