Toyota Corolla (E120): Components
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 ...
Replacement
1. Disconnect battery negative terminal
2. Remove engine under cover rh
3. Remove starter assy
Disconnect the starter connector.
open the terminal cover.
remove the nut, then disconnect the starter wire.
remove the 2 bolts, then remove the starter.
4. Install starter a ...
Inspection
1. Cooling fan relay
Inspect the cooling fan relay continuity.
Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
Check that there is no continuity between terminals
3 and 5.
If there is conti ...