With Manufacturer Scan Tool

DIAGNOSIS SYSTEM





a. Check the indicator.
When the ignition switch is turned ON, check that the VSC warning light, VSC OFF indicator light and SLIP indicator light goes ON for 3 seconds.

HINT:
- If the ECU stores DTC, VSC warning light and VSC OFF indicator light is ON.
- If the indicator check result is not normal, proceed to troubleshooting for the VSC warning light circuit, VSC OFF indicator light circuit, and SLIP indicator light circuit.






b. Check the DTC.
1. Hook up the LEXUS hand-held tester to the DLC3.
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.





c. (Reference):
Using LEXUS break-out-box and LEXUS hand-held tester, measure the ECU terminal values.
1. Turn the ignition switch OFF.
2. Hook up the LEXUS break-out-box and LEXUS hand-held tester to the vehicle.
3. Turn the ignition switch ON.
4. Read the ECU input/output values by following the prompts on the tester screen.

HINT:
- LEXUS hand-held tester has a "Snapshot" function. This records the measured values and is effective in the diagnosis of intermittent problems.
- Please refer to the LEXUS hand-held tester/LEXUS break-out-box operator's manual for further details.

HINT: If the ignition switch is turned from ON to ACC or LOCK during test mode, DTC will be erased.