The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Toyota dealer.

If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately.Horn Circuit
DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm
sounding state, the main body ECU (driver side junction block assembly) transmits
a signal to cause the horn to sound at intervals of 0.4 seconds.
WIRING DIAGRAM
...
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and replace the fuses as necessary.
Vehicles with smart key system:
Turn the “ENGINE START STOP” switch off.
Vehicles without smart key system:
Turn th ...
Input / Turbine Speed Sensor Circuit Malfunction (P0715,P0717)
DESCRIPTION
This sensor detects the rotation speed of the turbine which shows the input revolution
(speed) of the transaxle. By comparing the input turbine speed signal (NT) with
the counter gear speed sensor signal (NC), the TCM detects the shift timing ...