Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Electronic controlled automatic transaxle / Shift solenoid ”b” control circuit
low/high
Toyota Corolla (E120): Shift solenoid ”b” control circuit low/high
Dtc p0976 shift solenoid ”b” control circuit low (shift solenoid valve s2)
Dtc p0977 shift solenoid ”b” control circuit high (shift solenoid valve s2)
Other materials:
Inspection procedure
1 Check p/t squib(lh) circuit(airbag sensor assy center – front seat
outer belt assy lh)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the airbag sensor
assy center and the seat belt pretensio ...
Engine hood/door
Preparation
Sst
Recomended tools
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 ...