Toyota Corolla (E120): Idle signal circuit

Inspection procedure

Circuit description

Other materials:

Warning lights
Warning lights inform the driver of malfunctions in the indicated vehicle’s systems. *1: Vehicles without a smart key system: These lights turn on when the engine switch is turned to the “ON” position to indicate that a system check is being performed. They will turn off after the engi ...

Using the key (vehicles without a smart key system and with a wireless remote control function)
Releasing To release the key, press the button Folding To stow the key, press the button then fold the key. Using the mechanical key (vehicles with a smart key system) To take out the mechanical key, slide the release button and take the key out. The mechanical key can only be inserted in o ...

Monitor description
Dtc p0451, p0452 or p0453 is recorded by the ecm when the vapor pressure sensor malfunctions. P0451 The ecm senses pressure in the fuel tank using the vapor pressure sensor. The ecm supplies the sensor with a regulated 5 v reference–voltage and the sensor returns a signal voltage betwee ...