Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Utility

UTILITY

ALL READINESS

HINT:

• With "All Readiness", you can check whether or not the DTC judgment has been completed by using the Techstream.
• You should check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs even if no DTCs are stored.

(e) Turn the power switch off and wait for 2 minutes or more.

(f) Turn the power switch on (IG).

(g) Perform the DTC judgment driving pattern to run the DTC judgment.

(h) Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

(i) Input the DTC to be confirmed.

(j) Check the DTC judgment result.

(k) Turn the power switch off.

DIAGNOSIS RELATED INFORMATION

(a) Check for diagnosis related information.

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Powertrain / Hybrid Control / Utility / Diagnosis Related Information.

(5) Check the Diagnosis Related Information, and then write them down.

(b) Clear diagnosis related information.

NOTICE:

Clearing the DTCs will also clear the diagnosis related information.

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(5) Clear the diagnosis related information and freeze frame data.

(6) Turn the power switch off.

BATTERY STATUS INFO UPDATE

HINT:

If the HV battery has been replaced, make sure to perform "Battery Status Info Update".

It is necessary to update the HV battery status information stored in the hybrid vehicle control ECU after the HV battery replacement.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Hybrid Control / Utility / Battery Status Info Update.

(e) Turn the power switch off.

HIGH VOLTAGE FUSE ACCUMULATED LOAD HISTORY RESET

HINT:

• If the hybrid battery terminal block has been replaced, make sure to perform "High Voltage Fuse Accumulated Load History Reset" and then clear the DTCs.
• When "High Voltage Fuse Accumulated Load History Reset" is performed, the high voltage fuse accumulated load history stored in the hybrid vehicle control ECU will be initialized.
• If "High Voltage Fuse Accumulated Load History Reset" is not performed after replacing the hybrid battery terminal block when troubleshooting DTC P0A9563, the same DTC will be output again.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Hybrid Control / Utility / High Voltage Fuse Accumulated Load History Reset.

(e) According to the display on the Techstream, perform High Voltage Fuse Accumulated Load History Reset and check that "High Voltage Fuse Accumulated Load History Reset is complete." is displayed.

HINT:

If "High Voltage Fuse Accumulated Load History Reset has failed. Do you want to try again?" is displayed on the Techstream, perform the procedure again.

(f) Turn the power switch off.