Lexus IS250 IS220d GSE20 ALE20 4GR-FSE ENGINE CONTROL SYSTEM

SFI SYSTEM - CHECK MODE PROCEDURE

• HINT:

• Intelligent tester only:

• Compared to the normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect the malfunctions that cannot be detected by normal mode.

• NOTICE:

• All the stored DTCs and freeze frame data are erased if: 1) the ECM is changed from normal mode to check mode or vice versa; or 2) the engine switch is turned from on (IG) to ACC or off while in check mode. Before changing modes, always check and make a note of any DTCs and freeze frame data.

Check and ensure the following condition:

Battery positive voltage 11 V or more.

Throttle valve fully closed.

Transmission in the P or N positions.

A/C switch OFF.

Turn the engine switch off.

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Turn the tester ON.

Enter the following menus: Power train / Engine / Utility / Check Mode.

Switch the ECM from normal mode to check mode.

Make sure the MIL flashes as shown in the illustration.

Start the engine.

Make sure the MIL turns OFF.

Simulate the conditions of the malfunction described by the customer.

Check DTCs and freeze frame data using the tester.