Sliding Roof System - How To Proceed With Troubleshooting

Lexus IS250 IS220d GSE20 ALE20 - SLIDING ROOF


SLIDING ROOF SYSTEM - HOW TO PROCEED WITH TROUBLESHOOTING

  • HINT:
Use these procedures to troubleshoot the sliding roof system.
*: Use the intelligent tester.

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)*

Using the intelligent tester, 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
Result
ResultProceed to
Fault is not listed in problem symptoms tableA
Fault is listed in problem symptoms tableB
B.
Go to step 6
A
5.OVERALL ANALYSIS AND TROUBLESHOOTING*
Data List / Active Test
Terminals of ECU
On-vehicle Inspection
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6.ADJUST, REPAIR OR REPLACE
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7.CONFIRMATION TEST
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END