Toyota Corolla (E120): Evap monitor (vacuum pressure monitor)

Notice

: a cold soak must be performed prior to conducting the drive pattern to complete the internal pressure readiness monitor.

  1. Cold soak preconditions

The monitor will not run unless:

  • mil is off.
  • Fuel level is approximately 1/2 to 3/4.
  • Altitude is 7800 feet (2400 m) or less.
  1.  cold soak procedure

Let the vehicle cold soak for 8 hours or until the difference between iat and ect becomes less than 13°f (7 °C).

Hint

: examples:

  • scenario 1
    ect = 75°f (24 °C)
    iat = 60°f (16 °C)
    difference between ect and iat is 15°f (8 °C).

    The monitor will not run because difference between ect and iat is greater than 13°f (7 °C).

  • Scenario 2
    ect = 70°f (21 °C)
    iat = 68°f (20 °C)
    difference between ect and iat is 2°f (1 °C).

    The monitor will run because difference between ect and iat is less than 13°f (7 °C).

    Share this page:

    Other materials:

    Favorites list setting
    Up to 15 contacts (maximum of 4 numbers per contact) can be registered in the favorites list. ■ Registering the contacts in the favorites list 1 Select “Add Favorite”. 2 Select the desired contact to add to the favorites list. Dimmed contacts are already stored as a favorite. 3 Chec ...

    Engine immobilizer system
    The vehicle’s keys have built-in transponder chips that prevent the engine from starting if a key has not been previously registered in the vehicle’s on-board computer. Never leave the keys inside the vehicle when you leave the vehicle. Vehicles without a smart key system: The indicator li ...

    Terminals of ecu
    Oscilloscope wave (*1) Hint: terminal: od – gnd gauge set: 5 v / div, 50 ms / div condition: during cruise control driving o/d switch on. ...