Automatic Transmission System (For 1Gd-Ftv) Check Mode Procedure

Check mode has a higher sensitivity to malfunctions and can detect malfunctions that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1 trip detection logic.

Make sure that the following conditions are met:

1. Battery positive voltage 11 V or higher.
   

2. Throttle valve fully closed.
   

3. Shift lever in P or N.
   

4. Air conditioning off.
   

Turn the engine switch off.

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Utility / Check Mode.

Change the ECM to check mode. Make sure the MIL flashes as shown in the illustration.

NOTICE:

All DTCs and freeze frame data will be cleared if: 1) the GTS is used to change the ECM from normal mode to check mode or vice versa; or 2) during check mode, the engine switch is turned from on (IG) to (ACC) or off.

Before entering check mode, make notes of the DTCs and freeze frame data.

Start the engine. The MIL should turn off after the engine starts.

Perform Monitor Drive Pattern for the ECT test (LandCruiser RM000000W7K0UTX.html).
(Or, simulate the conditions of the malfunction described by the customer.)

After simulating the malfunction conditions, use the GTS to check the DTC and freeze frame data.