DIAGNOSIS FUNCTION
The diagnosis function makes the master warning light and the multi-information display turn on. 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 battery terminal, do not disconnect them until the inspection has been completed.
CHECK INDICATOR
When a malfunction occurs in the dynamic radar cruise control system, the system turns off the cruise control indicator and the master warning light illuminates at the same time a "pong" sound is heard. Also, "Check Cruise Control System" is displayed in the No. 1 meter ECU sub-assembly and the ECM stores DTCs.
Tech Tips
When the system returns to normal, the "Check Cruise Control System" display in the No. 1 meter ECU sub-assembly disappears.
Do not remove any fuses or disconnect any cables from the battery terminals until the data stored in the ECUs is cleared.