Toyota Corolla (E120) 2002–2008 Repair Manual / Emission control
Toyota Corolla (E120): Emission control
- Emission control system
- Engine assembly
- Fan and generator v belt
- Valve clearance
- Partial engine assy
- Chain sub–assy
- Camshaft
- Cylinder head gasket
- Timing gear cover oil seal
- Engine rear oil seal
- Cylinder head assy
- Cylinder block assy
Other materials:
Inspection procedure
Hint:
read freeze frame data using the hand-held tester or the obd ii scan tool.
Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, it is
useful for determining whether
the vehicle was running or stopped, the engine was warmed up or not, the ...
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 ...
Inspection procedure
1 Check un–lock warning switch assy
Disconnect the key unlock warning switch connector.
check the continuity between the terminals of the key unlock
warning switch connector, as shown in the illustration
and table.
Standard:
2 Check wire harness (tvip ecu unlock warni ...