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:

    Vehicle control system
    Ignition or starter switch assy Replacement 1. Remove steering column cover 2. Remove ignition or starter switch assy Disconnect the ignition switch connector and unlock warning switch connector.  remove the 2 clamps.  remove the 2 screws and ignition switch. Inspectio ...

    Inspection procedure
    Hint: start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not using the hand–held tester. 1 Perform active test by hand–held tester(abs motor relay) Check the operation sound of the abs motor individually when operaing it with the ...

    Installing child restraints
    Follow the child restraint system manufacturer's instructions. Firmly secure child restraints to the seats using the LATCH anchors or a seat belt. Attach the top tether strap when installing a child restraint. The lap/shoulder belt can be used if your child restraint system is not compatible ...