Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001H8SQ
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [01/2019 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): DTC CHECK / CLEAR; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022]

DTC CHECK / CLEAR

NOTICE:

  • When DTC is output, be sure to confirm and record.
  • DTCs may have been stored due to problems unrelated to the steering lock function. Be sure to confirm and record any DTCs output for other systems.
  • When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus Body Electrical Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • The steering lock ECU (steering lock actuator or upper bracket assembly) does not store history DTCs. If any DTCs are output, confirm and record them as soon as possible. Do not turn the engine switch off or clear the DTCs until the DTCs are confirmed and recorded.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

Body Electrical > Smart Key > Trouble Codes

(e) Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.

Body Electrical > Power Source Control > Trouble Codes

(f) Enter the following menus: Body Electrical / Starting Control / Trouble Codes.

Body Electrical > Starting Control > Trouble Codes

(g) Enter the following menus: Powertrain / Engine / Trouble Codes. (for M20A-FKS)

Powertrain > Engine > Trouble Codes

(h) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. (for 2ZR-FAE)

Powertrain > Engine and ECT > Trouble Codes

(i) Check for DTCs.

Click here 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): DIAGNOSTIC TROUBLE CODE CHART 2021 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 06/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): DIAGNOSTIC TROUBLE CODE CHART 2022 MY Corolla Corolla Hatchback GR Corolla [06/2021 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): DIAGNOSTIC TROUBLE CODE CHART

HINT:

  • The steering lock system DTCs are output from the steering lock ECU (steering lock actuator or upper bracket assembly) via the certification ECU (smart key ECU assembly).
  • When any DTC is not output and security indicator light does not blink, problems may be caused by the following:
    • Open in TC circuit between DLC3 connector and related ECU
    • Malfunction of related ECU

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

Body Electrical > Smart Key > Clear DTCs

(e) Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.

Body Electrical > Power Source Control > Clear DTCs

(f) Enter the following menus: Body Electrical / Starting Control / Trouble Codes.

Body Electrical > Starting Control > Clear DTCs

(g) Enter the following menus: Powertrain / Engine / Trouble Codes. (for M20A-FKS)

Powertrain > Engine > Clear DTCs

(h) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. (for 2ZR-FAE)

Powertrain > Engine and ECT > Clear DTCs

(i) Clear the DTCs.