Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / ABS with EBD system / Open circuit in stop light switch
circuit / Inspection procedure
Toyota Corolla (E120): Inspection procedure
1 Inspect stop lamp switch assy
- Check that the stop light lights up when brake pedal is depressed and turns off when the brake pedal is released.
2 Inspect skid control ecu terminal voltage(stp terminal)
- Disconnect skid control ecu connector.
- measure voltage between terminal stp (16) and gnd (1,
23) of skid control ecu harness side connector when the
brake pedal is depressed.
Voltage: 10 – 14 v
3 Check harness and connector(stop light switch – skid control ecu)
- Check for open and short circuit in harness and connector between stop light switch and skid control ecu
Proceed to next circuit inspection shown on problem symptoms table
4 Check harness and connector(stop light circuit)
- Check for open and short circuit in harness and connector of the stop light circuit
Repair or replace harness or connector
Other materials:
Circuit description
Refer to dtc p0120
Dtc no.
Dtc detection condition
Trouble area
P0121
The following condition is met 4 times. After the vehicle speed
has exceeded 19 mph (30 km/h) once, the throttle position
sensor output value is out of normal range when the throttle
...
For safe driving
For safe driving, adjust the
seat and mirror to an appropriate
position before driving.
Correct driving posture
Adjust the angle of the seatback
so that you are sitting
straight up and so that you do
not have to lean forward to
steer.
Adjust the seat so that you
can depress the pedals fully ...
On–vehicle inspection
1. Inspect speedometer
check the operation.
Using a speedometer tester, inspect the speedometer fro allowable
indication error and check
the operation of the odometer.
Reference:
Notice:
tire wear and tire over or under inflation will increase the indication error.
...