Rear Sunshade System - How To Proceed With Troubleshooting

Lexus IS250 IS220d GSE20 ALE20 - INTERIOR


REAR SUNSHADE SYSTEM - HOW TO PROCEED WITH TROUBLESHOOTING

Use these procedures to troubleshoot the rear sunshade system.

1.VEHICLE BROUGHT TO WORKSHOP
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2.INSPECT BATTERY VOLTAGE
  • Standard voltage:
  • 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

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3.INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

Result
ResultProceed to
MPX DTC is not outputA
MPX DTC is outputB
B.
Go to MULTIPLEX COMMUNICATION SYSTEM
A
4.PROBLEM SYMPTOMS TABLE

Refer to the problem symptoms table .

Result
ResultProceed to
Fault not listed in problem symptoms tableA
Fault listed in problem symptoms tableB
B.
Go to step 6
A
5.OVERALL ANALYSIS AND TROUBLESHOOTING

Terminals of ECU

Circuit Inspection (, )

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6.REPAIR OR REPLACE
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7.CONFIRMATION TEST
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END