Diagnosis Inspection (Check Mode)

NOTICE: LEXUS hand-held tester ONLY
- Compared to the normal mode, the check mode has high sensing ability to detect malfunctions.
- Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.

DTC CHECK
- Initial conditions.
- Battery positive voltage 11.0 volts or more.
- Throttle valve fully closed.
- Transmission in P position.
- Air conditioning switched off.
- Turn ignition switch OFF.
- Prepare the LEXUS hand-held tester.




- Connect the LEXUS hand-held tester to DLC3 in the fuse box at the lower left of the instrument panel.

- Turn the ignition switch ON and switch the LEXUS hand-held tester ON.

- Switch the LEXUS hand-held tester from normal mode to check mode.



- Check that the Malfunction Indicator Lamp (MIL) flashes.
- Start the engine.
- MIL and PWR indicator light should go out after the engine starts.
- Simulate the conditions of the malfunction described by the customer.

NOTICE: Leave the ignition switch ON until you have checked the DTCs, etc.

- After simulating the malfunction conditions, use the LEXUS hand-held tester diagnosis selector to check the DTCs and freeze frame data, etc.
HINT: Take care not to turn the ignition switch OFF, as turning it OFF switches the diagnosis system from check mode to normal mode, so all DTCs, etc. are erased.

- After checking the DTCs, inspect the applicable circuit.