Toyota Corolla (E120): Sfi system

Share this page:

Other materials:

Circuit description
The ecm compares the two waveforms of the heated oxygen sensors located before and after the catalyst to determine whether or not the catalyst performance has deteriorated. Air–fuel ratio feedback compensation keeps the waveform of the heated oxygen sensor in front of the catalyst alterna ...

Evap monitor (vacuum pressure monitor) (continued)
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.* Engine coolant temperature (ect) is between 40°f and 95°f (4.4 °C and 35 °C). Intake air temperature (iat) is between 40°f and 95 ...

Headlamp dimmer switch assy
Replacement 1. Remove steering column cover lwr Remove 3 screws and steering column cover lwr. 2. Remove headlamp dimmer switch assy Disconnect the connector.  release the claw and pull out the head light dimmer switch assy. ...