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:
Ecu power source circuit
Circuit description
This circuit provides power to operate the tvip ecu.
Wiring diagram
Inspection procedure
1 Check fuse (ecu–b)
Remove the fuse from the instrument panel j/b.
check the continuity of the fuse.
Standard: continuity
2 Check tvip ecu
Disconnect ...
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 ...
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled.
CAUTION
Exhaust gases include harmful carbon monoxide (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an
accident c ...