Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Audio system / Pressing power switch does not start system
Toyota Corolla (E120): Pressing power switch does not start system
Wiring diagram
Inspection procedure
1 Inspect radio receiver assy(+b, acc, gnd)
- Check that the continuity between terminals at each condition, as shown in the chart.
Standard:
- Check that the voltage between terminals at each condition, as shown in the chart.
Standard:
Check and replace radio receiver assy
Other materials:
Circuit description
The purpose of this circuit is to prevent the engine from stalling while
driving in lock–up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signals to the ecm. Then
the ecm cancels the operation
of the lock–up clutch while braking is i ...
Center stop lamp assy
Replacement
1. Remove package tray trim panel assy (w/o rear spoiler)
2. Remove center stop lamp assy (w/o rear
spoiler)
Remove the center stop light assy as shown in the illustlation.
3. Remove center stop lamp assy (w/ rear
spoiler)
Remove the 2 screws.
disconnect th ...
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 ...