With Manufacturer Scan Tool
Check the indicator.
When the ignition switch is turned ON, check that the TRAC OFF indicator light goes on for 3 seconds.
HINT: If the indicator check result is not normal, proceed to troubleshooting for the TRAC OFF indicator light circuit.
Using the LEXUS hand-held tester, check the DTC.
1. Hook up the LEXUS hand-held tester.
2. Turn the ignition switch ON.
3. Read the DTC by following the prompts on the tester screen.
HINT: Please refer to the LEXUS hand-held tester operator's manual for further details.