Toyota Corolla (E120) 2002–2008 Repair Manual / Drive shaft / propeller shaft / Drive shaft, propeller shaft, axle
Toyota Corolla (E120): Drive shaft, propeller shaft, axle
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Check mode procedure
1. Dtc check (check mode)
Hint:
hand–held tester only:
compared to the normal mode, the check mode has more sensing
ability to detect malfunctions. Furthermore, the same diagnostic
items which are detected in the normal mode can also be
detected in the check mode.
Procedure for check m ...
Fuel
Preparation
Sst
Recomended tools
Ssm
Equipment
...
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 ...


