Sequoia LTD 4WD V8-4.7L (2UZ-FE) (2001)
Information Bus: Reading and Clearing Diagnostic Trouble Codes
Displaying & Reading Trouble Codes
NOTE: This is the only information provided by the manufacturer for reading diagnostic trouble codes for this system.
NOTE: This article contains corrected data processed from TSB# PG001-05.
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) As shown in the illustration, each ECU of this vehicle is connected by communication bus and it transmits each signal by communication. This
communication bus is self-diagnosed by Body ECU and it memorizes DTC when it detects communication stop to ECU or communication bus
+B short or OND short. There is a possibility that Body ECU cannot self-diagnose accurately unless it doesn't work normal. So, please note
that the troubleshooting of Body Electrical System should be done after confirming if Body ECU and Open door indicator works normal by
Step 2. "BASIC INSPECTION" described below.