
CAUTION
- If the engine is running
Turn off the engine and ensure that there is adequate ventilation before performing maintenance checks.
Vehicle interior
Emission inspection and maintenance (I/M) programsBrake 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 ...
Checking Monitor Status
CHECKING MONITOR STATUS
The purpose of the monitor result (mode 06) is to allow access to the results
of on-board diagnostic monitoring tests of specific components/systems that are
not continuously monitored. Examples are catalysts and evaporative emissi ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
Use the table below to help determine the cause of problem symptoms. If multiple
suspected areas are listed, the potential causes of the symptoms are listed in order
of probability in the "Suspected Area" column of the tab ...