COMPONENTS
ILLUSTRATION
ILLUSTRATION
RemovalCatalyst System Efficiency Below Threshold (Bank 1) (P0420)
MONITOR DESCRIPTION
The ECM uses sensors mounted in front of and behind the Three-Way Catalytic Converter
(TWC) to monitor its efficiency.
The first sensor, the air fuel ratio sensor, sends pre-catalyst information to
the ECM. The second sensor, the heat ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL FRONT SIDE MARKER LIGHT BULB
(a) Install the front side marker light bulb to the front side marker light socket.
(b) Turn the front side marker light socket with the front side marker
light bulb in the directi ...
Brake 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 ...