Lighting

How to proceed with troubleshooting

~1min read

1 VEHICLE BROUGHT TO WORK SHOP

2 CUSTOMER PROBLEM ANALYSIS

3 CHECK BODY MULTIPLEX COMMUNICATION SYSTEM

  1. Check for the DTC outputs.

4 DTC CHECK

5 DTC CHART

6 PROBLEM SYMPTOMS TABLE

7 TERMINAL OF ECU

8 CIRCUIT INSPECTION

9 IDENTIFICATION OF PROBLEM

10 REPAIR OR REPLACE

11 CONFIRMATION TEST

END

Test yourself

A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.