SYSTEM DIAGRAM
System Description
Operation CheckCatalyst 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 ...
Lost Communication with ECM / PCM "A" (U0100,U0129)
DESCRIPTION
The combination meter assembly communicates with the ECM via the CAN communication
system (CAN No. 1 Bus).
DTC No.
DTC Detection Condition
Trouble Area
U0100
When either of the follow ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the wiper and washer system.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
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