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.ECU Power Source Circuit
DESCRIPTION
This circuit provides power for main body ECU (driver side junction block assembly)
operation.
WIRING DIAGRAM
PROCEDURE
1.
CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MAIN BODY ECU (POWER SOURCE))
...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Sliding roof system data and Diagnostic Trouble Codes (DTCs) can be read
through the vehicle Data Link Connector 3 (DLC3). When the system seems to be malfunctioning,
use the Techstream to check for malfunctions and pe ...
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Communication Line
A/C amplifier
ECM
Magnetic clutch request signal*1
CAN
Idle up reques ...