SYSTEM DIAGRAM
Precaution
System DescriptionBrake Switch "A" / "B" Correlation (P0504)
DESCRIPTION
The stop light switch is a duplex system that transmits 2 signals: STP and ST1-.
These 2 signals are used by the ECM to monitor whether or not the brake system is
working properly. If signals which indicate the brake pedal is being depressed a ...
Light bulbs
You may replace the following bulbs yourself. The difficulty level of replacement
varies depending on the bulb. If necessary bulb replacement seems difficult to perform,
contact your Toyota dealer.
For more information about replacing other light bulbs, c ...
Definition Of Terms
DEFINITION OF TERMS
Term
Definition
Monitor Description
Description of what the ECM monitors and how it detects malfunctions
(monitoring purpose and details).
Related DTCs
Group ...