Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000026WDP
Model Year Start: 2023 Model: Corolla HV Prod Date Range: [09/2022 -           ]
Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): DTC CHECK / CLEAR; 2023 - 2025 MY Corolla HV [09/2022 -        ]

DTC CHECK / CLEAR

CHECK FOR DTC

(a) Enter the following menus.

Powertrain > Motor Generator > Trouble Codes

(b) Check the DTCs and freeze frame data, and then write them down.

(c) Check the details of the DTCs.

Display Item

Description

Test Failed

Shows the malfunction judgment results during the current trip.

Pending

Shows the malfunction judgment results up to now (Indicates the possibility of a malfunction when no DTC is confirmed.)

Confirmed

Shows the DTCs confirmed up to now (The number of current trips differs for each DTC.)
  • A pending DTC is a DTC that is stored in the motor generator control ECU during the 1st trip when 2 trip detection logic is used.
  • Freeze frame data is stored for each of the latest result DTCs, pending DTCs and confirmed DTCs.

CHECK FREEZE FRAME DATA

(a) If a DTC is present, select it in order to display its freeze frame data.

(b) Read the freeze frame data recorded when the DTC was stored.

CHECK TIME STAMP

HINT:

By checking Time Stamp, the time and order in which DTCs were stored in an ECU can be checked.

(a) Enter the following menus: Health Check.

(b) Perform the following steps when the data setting screen is displayed.

(c) Select the systems for which to perform Health Check and check for time stamp data.

Selectable items:

  • Powertrain
  • Chassis
  • Body
  • Store All Data

(d) Select "Yes" when "Do you want to store time stamp data?" is displayed.

HINT:

If "Yes" is not selected, time stamp data will not be stored.

(e) After Health Check has completed, select "Time Stamp Data" to display the Time Stamp screen.

(f) Select the desired system from the drop-down list on the bottom of the Time Stamp screen.

(g) Check the order and time which DTCs were stored for the selected system.

CHECK FOR DTC (SYSTEMS EXCEPT MOTOR GENERATOR CONTROL ECU)

HINT:

The motor generator control ECU maintains communication with other ECUs, such as the hybrid vehicle control ECU, ECM and skid control ECU assembly. Therefore, if the motor generator control ECU outputs a DTC, it is necessary to check for and make a note of any DTCs stored for other systems.

(a) If DTCs are stored, check the relevant systems.

HINT:

If DTCs for the CAN communication system are stored in addition to other DTCs, first troubleshoot and repair the CAN communication system malfunctions.

CLEAR DTC

(a) Clear the DTCs and freeze frame data.

Powertrain > Motor Generator > Clear DTCs

NOTICE:

Clearing the DTCs will also clear the freeze frame data and diagnosis related information.

CLEAR PERMANENT DTC

OUTLINE

  • After clearing current DTCs using the GTS (or by disconnecting the cable from the negative (-) auxiliary battery terminal), permanent DTCs can be cleared when the universal trip is performed and then the system is determined to be normal for the relevant DTCs. The driving pattern to obtain a normal judgment is described under the "Confirmation Driving Pattern" for the respective DTC.
  • To clear permanent DTCs, all of the following conditions must be are met:
    • There is a history that universal trip driving was performed.
    • The vehicle has been judged as normal for 2 trips. (Normal judgment does not have to be performed in 2 consecutive trip, but normal judgment should occur in the latest trip.)
    • No malfunctions are detected.

(a) Enter the following menus.

Powertrain > Motor Generator > Trouble Codes

HINT:

If "YES" is displayed for the value of "PERMANENT" at the top right of the GTS screen, permanent DTCs are stored.

(b) Select the "Generic" tab.

(c) Check if permanent DTCs are stored.

HINT:

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

(d) Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

Powertrain > Motor Generator > Clear DTCs

NOTICE:

Do not clear the DTCs or disconnect the cable from the auxiliary battery terminal after performing this step.

(e) Perform the universal trip.

CAUTION:

When performing the driving pattern, obey all speed limits and traffic laws.

HINT:

The universal trip driving pattern and normal judgment procedure can be performed consecutively in the same driving cycle.

(1) Turn the ignition switch to ON (READY) and wait for 30 seconds or more.

(2) Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more.

HINT:

It is possible to complete the drive pattern even if the vehicle decelerates to less than 40 km/h (25 mph) during the driving cycle provided that the vehicle is driven at 40 km/h (25 mph) or more for a total of 5 minutes.

(3) Allow 10 minutes or more to elapse from the time the ignition switch turned to ON (READY).

(f) Turn the ignition switch off and wait for 2 minutes or more.

(g) Perform the normal judgment procedure in the respective confirmation driving pattern of each output DTC.

HINT:

Do not turn the ignition switch off by mistake during this step.

(h) With the ignition switch ON (READY) and wait for 5 seconds or more.

(i) Turn the ignition switch off and wait for 2 minutes or more.

(j) Turn the ignition switch to ON.

(k) Enter the following menus.

Powertrain > Motor Generator > Trouble Codes

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

HINT:

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

(m) Perform the normal judgment procedure in the respective confirmation driving pattern of each output DTC.

HINT:

Do not turn the ignition switch off by mistake during this step.

(n) With the ignition switch ON (READY) and wait for 5 seconds or more.

(o) Turn the ignition switch off and wait for 2 minutes or more.

(p) Turn the ignition switch to ON.

(q) Enter the following menus.

Powertrain > Motor Generator > Trouble Codes

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

HINT:

  • Permanent DTCs will be cleared if a normal judgment is obtained during 3 consecutive driving cycles with the MIL illuminated.
  • The permanent DTCs are cleared when the universal trip is completed.
  • If permanent DTCs are still present after the universal trip, turn the ignition switch off and wait for a while. Then, confirm that the permanent DTCs have been cleared.