Check Mode Procedure [08/2013 - 08/2016]

WARNING: This page is about a different car, the 2018 Toyota Corolla, 2017 Toyota Corolla, 2016 Toyota Corolla, 2015 Toyota Corolla, and 2014 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

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

NOTE:

All the stored DTCs and freeze frame data are cleared if: 1) the ECM is changed from normal mode to check mode or vice versa; or 2) the ignition switch is turned from ON to ACC or off while in check mode. Before changing modes, always check and note any DTCs and freeze frame data.

CHECK MODE PROCEDURE

Check and ensure the following conditions:
1. Battery voltage is 11 V or higher.
2. Throttle valve is fully closed.
3. Shift lever is in P or N.
4. A/C switch is off.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.

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

Powertrain > Engine and ECT > Utility

Tester Display
Check Mode

Switch the ECM from normal mode to check mode.

Check that the MIL flashes as shown in the illustration.

Start the engine.
Check that the MIL turns off.
Simulate the conditions of the malfunction described by the customer.
Check DTCs and freeze frame data using the Techstream.
Powertrain > Engine and ECT > Trouble Codes