K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR; 2020 - 2023 MY Corolla Corolla Hatchback [01/2019

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001GYRT
Model Year Start: 2020	Model: Corolla Hatchback	Prod Date Range: [01/2019 - 11/2022]
Title: K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR; 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]

DTC CHECK / CLEAR

NOTICE:

When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are cleared. Before changing modes, always check and make a note of DTCs and freeze frame data.

HINT:

DTCs which are stored in the ECM can be displayed on the Techstream. The Techstream can display current, pending and permanent DTCs.
If a malfunction is detected during the current driving cycle, current and permanent DTCs are stored.
Some DTCs are not stored if the ECM does not detect the same malfunction again during a second consecutive driving cycle. However, such malfunctions, detected on only one occasion, are stored as pending DTCs.
Current and pending DTCs can be cleared by using the Techstream or by disconnecting the cable from the negative battery terminal. However, permanent DTCs cannot be cleared using either of these two methods.
After clearing current DTCs using the Techstream (or by disconnecting the cable from the negative battery terminal), permanent DTCs can be cleared when the system is determined to be normal for the relevant DTCs and then the universal trip is performed.

2 Trip Detection Examples

Pending DTC	Store condition	Malfunction detected
Pending DTC	Clear condition	System determined to be normal or DTCs cleared using Techstream or Cable disconnected from negative battery terminal
Current DTC	Store condition	Malfunction detected (2nd trip)
Current DTC	Clear condition	No malfunctions in 40 driving cycles or DTCs cleared using Techstream or Cable disconnected from negative battery terminal
Permanent DTC	Store condition	Malfunction detected (2nd trip)
Permanent DTC	Clear condition	Ignition switch turned to ON after no malfunction is detected in 3 consecutive driving cycles or After DTCs cleared using Techstream or cable disconnected from negative battery terminal, malfunction not detected when universal trip performed
MIL	ON	Malfunction detected (2nd trip)
MIL	OFF	Ignition switch turned to ON after no malfunction is detected in 3 consecutive driving cycles or DTCs cleared using Techstream or Cable disconnected from negative battery terminal

CHECK DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

(e) Check for DTCs and freeze frame data, and write them down.

(f) Check the details of the DTCs.

Click here

NOTICE:

When simulating a symptom and using the Techstream to check for DTCs, use normal mode. For DTCs in the Diagnostic Trouble Code Chart subject to "2 trip detection logic", perform the following:

Turn the ignition switch off after the symptom is simulated once. Then repeat the simulation process. When the symptom has been simulated twice, the MIL will illuminate and DTCs will be stored in the ECM.

CLEAR DTC (Pending and Current DTC using Techstream)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Clear DTCs

(e) Clear the DTCs.

CLEAR DTC (Pending and Confirmed DTC without using Techstream)

(a) Perform either of the following operations:

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

Click here

Disconnect the cable from the negative (-) battery terminal for more than 1 minute.
Remove the EFI-MAIN NO. 1 fuse and ETCS fuse from the engine room relay block and junction block assembly located inside the engine compartment for more than 1 minute.

CLEAR PERMANENT DTC

HINT:

Even if the following procedure is not performed, permanent DTCs are cleared if no malfunctions are detected during 3 consecutive driving cycles.

*a	5 seconds or more	*b	Moving shift lever P to N
*c	30 seconds or more	*d	Moving shift lever N to D
*e	5 seconds or more	*f	3 seconds or more
*g	Total of 3 minutes or more	*h	15 seconds or more

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

(e) Check if permanent DTCs are stored.

HINT:

If permanent DTCs are not output, it is not necessary to continue this procedure.

(f) Clear the DTCs.

Powertrain > Engine and ECT > Clear DTCs

(g) Perform the universal trip.

(1) Start the engine, wait for 5 seconds or more, then move the shift lever from P to N.

(2) Wait for 30 seconds or more.

(3) Move the shift lever to D and wait for 5 seconds or more.

(4) With the brake pedal firmly depressed, slowly depress the accelerator pedal to increase the engine speed to between 1000 and 1500 rpm and hold it for 3 seconds or more. (Test A)

(5) Release the brake pedal to begin driving the vehicle.

(6) Drive the vehicle at a constant speed of 60 km/h (37 mph) or more for 3 minutes or more.

HINT:

It is possible to complete the drive pattern even if the vehicle decelerates to less than 60 km/h (37 mph) during the driving cycle provided that the vehicle is driven at 60 km/h (37 mph) or more for a total of 3 minutes.

(7) While driving at 60 km/h (37 mph), gradually decelerate over a period of 15 seconds or more and stop the vehicle.

(h) Turn the ignition switch off.

(i) Wait for 3 minutes or more.

(j) Turn the ignition switch to ON.

(k) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

(l) Check that the permanent DTCs have been cleared.

HINT:

If permanent DTCs have not been cleared, perform the universal trip again.
Permanent DTCs are cleared when the universal trip is completed.