Caution / Notice / Hint

WARNING: This page is about a different car, the 2015 Lexus IS 250 and 2014 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Perform the universal trip to clear permanent DTCs.
Refer to DTC CHECK / CLEAR [04/2013 - 08/2015]
Perform registration and/or initialization when parts related to the automatic transmission are replaced.
Refer to PRECAUTION [04/2013 - 06/2014] , or refer to PRECAUTION [06/2014 - 08/2015]

ACTIVE TEST

HINT:

Using the Techstream to perform Active Test allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Test early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Test.

Warm up the engine.
Turn the engine switch off.
Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Shift Position.

According to the display on the Techstream, perform the "Active Test".

HINT:

While driving, the shift position can be forcibly changed with the Techstream. Comparing the shift position commanded by the Active Test with the actual shift position enables you to confirm the problem.

Powertrain > Engine > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Control the Shift Position	Operate the shift solenoid valve and set the each shift position.	Press "→" button: Shift up Press "←" button: Shift down	Possible to check operation of the shift solenoid valves. [Vehicle Condition] 50 km/h (30 mph) or less

Powertrain > Engine > Active Test

Tester Display
Control the Shift Position

HINT:

This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
The 4th to 5th and 5th to 6th up-shifts must be performed with the accelerator pedal released.
The 6th to 5th and 5th to 4th down-shifts must be performed with the accelerator pedal released.
Do not operate the accelerator pedal for at least 2 seconds after shifting and do not shift successively.
The shift position commanded by the ECM is shown in the Data List (Shift Status) display on the Techstream.

The shift solenoid valve S1 is turned on/off normally when the shift lever is in the D position:

ECM commanded gear	1st	2nd	3rd	4th	5th	6th
Shift solenoid valve S1	OFF	ON	ON	ON	ON	ON