Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTC

Check for DTCs and note any codes that are output (see DTC CHECK / CLEAR )
Clear the DTC (see DTC CHECK / CLEAR )
Recheck for DTC (see DTC CHECK / CLEAR )

Result:

RESULT REFERENCE

Result	Proceed to
CAN communication system DTC is not output	A
CAN communication system DTC is output	B

HINT:

If the CAN communication system DTC U0129 and another DTC are output at the same time, perform troubleshooting for the CAN communication system DTC U0129 first

B: Go to CAN COMMUNICATION SYSTEM (See CAN COMMUNICATION SYSTEM )

A: USE SIMULATION METHOD TO CHECK (See HOW TO PROCEED WITH TROUBLESHOOTING )