With Manufacturer's Scan Tool

Check the DTC

HINT: If a malfunction occurs in the speed sensor or actuator, etc. during cruise control driving, the ECU actuates AUTO CANCEL of the cruise control and turns ON and OFF the CRUISE MAIN indicator light to inform the driver of a malfunction. At the same time, the malfunction is stored in memory as a diagnostic trouble code.
1. Turn the ignition switch to ON.
2. Check that the CRUISE MAIN indicator light comes on when the cruise control main switch is turned ON, and that the indicator light goes oft when the main switch is turned OFF.

HINT: If the indicator check result is not normal, proceed to troubleshooting for the combination meter section.





HOOK UP THE LEXUS HAND-HELD TESTER TO THE DLC3
b. Monitor the ECU data by following the prompts on the tester screen.

HINT: LEXUS hand-held tester has a "Snapshot" function which records the monitored data.
Please refer to the LEXUS hand-held tester operator's manual for further details.