Failing to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.


Stop the vehicle immediately.
Follow the correction procedures.Terminals Of Ecu
TERMINALS OF ECU
1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
(a) Disconnect the 2A and 2F main body ECU (driver side junction block assembly)
connectors.
(b) Measure the voltage and resistance according to the value(s) in the table
be ...
Knock Sensor
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE INTAKE MANIFOLD
(a) Remove the intake manifold (See page ).
2. REMOVE KNOCK SENSOR
(a) Disconnect the sensor connector.
...
Idle Control System Malfunction (P0505)
DESCRIPTION
The idle speed is controlled by the electronic throttle control system. The electronic
throttle control system is comprised of: 1) the one-valve-type throttle body; 2)
the throttle actuator, which operates the throttle valve; 3) the throttle p ...