With Manufacturer's Scan Tool

a. Inspect the battery positive voltage.
Battery positive voltage: 10 - 14 V

b. Perform visual check.
c. Check the warning light.

1. Turn the ignition switch to ON, and check that the tire pressure warning light goes on for 3 sec.

HINT: If the check result is not normal, proceed to troubleshooting for the tire pressure warning light circuit.

d. In case of using the LEXUS hand-held tester
Check the DTC.

1. Hook up the LEXUS hand-held tester to DLC3.
2. Turn the ignition switch ON.
3. Read the DTC by following the prompts on the tester screen.

HINT: Refer to the LEXUS hand-held tester operator's manual for further details.

4. Remove the LEXUS hand-held tester from the terminals of DLC3.