How To Proceed With Troubleshooting
WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
Use these procedures to troubleshoot the rear sunshade system.
- VEHICLE BROUGHT TO WORKSHOP
- INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
- INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)
- Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.
Result
RESULT TABLEResult Proceed to MPX DTC is not output A MPX DTC is output B
B: Go to MULTIPLEX COMMUNICATION SYSTEM
A: Go to next step.
- Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.
- PROBLEM SYMPTOMS TABLE
- Refer to PROBLEM SYMPTOMS TABLE
.
Result
RESULT TABLEResult Proceed to Fault not listed in problem symptoms table A Fault listed in problem symptoms table B
B: Go to step 6
A: Go to next step.
- Refer to PROBLEM SYMPTOMS TABLE
.
- OVERALL ANALYSIS AND TROUBLESHOOTING
- See TERMINALS OF ECU
- Circuit Inspection (See REAR SUNSHADE DOES NOT OPERATE WITH REAR SUNSHADE SWITCH , WIRING DIAGRAM )
- REPAIR OR REPLACE
- CONFIRMATION TEST
END