How To Proceed With Troubleshooting

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

HINT:

Use this procedure to troubleshoot the multiplex communication system.

VEHICLE BROUGHT TO WORKSHOP

CHECK FOR DTC

Check for DTCs and note any codes that are output.
Delete the DTC.

Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.

Result

RESULT REFERENCE

Result	Proceed to
DTC does not reoccur	A
DTC reoccurs	B

B: Go to step 4

A: Go to next step.

OVERALL ANALYSIS AND TROUBLESHOOTING
1. Terminals of ECU (See TERMINALS OF ECU ).
ADJUST, REPAIR OR REPLACE
CONFIRMATION TEST
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