





Exterior
Instrument panelCatalyst 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 ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL NO. 3 ANTENNA CORD SUB-ASSEMBLY
(a) Pass the washer hose through the No. 3 antenna cord sub-assembly.
(b) Pass the No. 3 antenna cord sub-assembly with washer hose through
the vehicle body as shown in the il ...
Speed Signal Circuit
DESCRIPTION
The combination meter assembly receives the vehicle speed signal from this circuit.
The wheel speed sensors produce an output that varies according to the vehicle speed.
The wheel speed sensor output is received by the skid control ECU which u ...