Diagnosis System
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
- DIAGNOSIS FUNCTION
- The diagnosis function makes the master warning light and the multi-information display turn on, and the CRUISE main indicator light blinks as shown in the illustration. When a malfunction occurs in the dynamic radar cruise control system, the DTCs are stored in the driving support ECU
NOTE:- The master warning light turns off if the system returns to a normal condition.
- Since the stored data in the driving support ECU is erased by disconnecting the EFI and ETCS fuses or the negative (-) battery cable, do not disconnect them until the inspection has been completed.
- CHECK INDICATOR
- Turn the power switch ON (IG).
- Check that the CRUISE main indicator light and RADAR READY indicator turn on when the main switch ON-OFF button is pushed on, and that the indicator light turns off when the ON-OFF button is pushed off
HINT.
- If the indicator check result shows a problem, proceed to troubleshooting for the METER - LS600HL article.
- If a malfunction occurs in the vehicle speed sensors, the stop light switch, or other related parts during cruise control driving, the ECU actuates AUTO CANCEL of the cruise control and blinks the CRUISE main indicator light. This indicator light informs the driver of the malfunction At the same time, the malfunction is stored as a diagnostic trouble code.