Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GV85
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [01/2019 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the immobiliser system (w/o Smart Key System).
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

CUSTOMER PROBLEM ANALYSIS

HINT:

  • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points for problem analysis:

    What

    Vehicle model, system name

    When

    Date, time, occurrence frequency

    Where

    Whether the problem occurs at a specific location

    Under what conditions?

    Whether the doors were locked or unlocked, whether the ignition switch was on, whether the engine was running

    How did it happen?

    Problem symptoms
NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT

4.

CRANK ENGINE FOR MORE THAN 10 SECONDS
NEXT

5.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2020 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 09/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM 2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

A

6.

CHECK FOR DTC* (ECM)

(a) Check for DTCs and note any codes that are output.

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

(1) for M20A-FKS

Powertrain > Engine > Trouble Codes

(2) for 2ZR-FAE

Powertrain > Engine and ECT > Trouble Codes

Result

Proceed to

DTCs are not output

A

SFI system DTCs are output

B

Immobiliser system DTCs are output

C
B

GO TO DIAGNOSTIC TROUBLE CODE CHART

for M20A-FKS: Click here 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY Corolla Corolla Hatchback [03/2019 - 09/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY Corolla Corolla Hatchback [09/2019 - 04/2020]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2021 MY Corolla Corolla Hatchback [04/2020 - 06/2020]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2021 MY Corolla Corolla Hatchback [06/2020 - 06/2021]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2022 MY Corolla Corolla Hatchback [06/2021 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

for 2ZR-FAE: Click here 2020 MY Corolla [01/2019 - 03/2019]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY Corolla [03/2019 - 04/2020]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2021 - 2022 MY Corolla [04/2020 - 09/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

C

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

7.

CHECK FOR DTC* (TRANSPONDER KEY ECU ASSEMBLY)

(a) Check for DTCs and note any codes that are output.

Body Electrical > Immobiliser > Trouble Codes

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

Result

Proceed to

DTCs are not output

A

Immobiliser system DTCs are output

B
B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

8.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B
B

GO TO STEP 10

A

9.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Data List / Active Test

Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): DATA LIST / ACTIVE TEST

(b) Terminals of ECU

Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): TERMINALS OF ECU

NEXT

10.

REPAIR OR REPLACE

HINT:

If the transponder key ECU assembly, ECM, or door control transmitter assembly are replaced, refer to Registration.

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION

NEXT

11.

CHECK FOR DTC*

(a) for M20A-FKS

(1) Clear the DTCs.

Body Electrical > Immobiliser > Clear DTCs

Powertrain > Engine > Clear DTCs

(2) Check for DTCs.

Body Electrical > Immobiliser > Trouble Codes

Powertrain > Engine > Trouble Codes

(b) for 2ZR-FAE

(1) Clear the DTCs.

Body Electrical > Immobiliser > Clear DTCs

Powertrain > Engine and ECT > Clear DTCs

(2) Check for DTCs.

Body Electrical > Immobiliser > Trouble Codes

Powertrain > Engine and ECT > Trouble Codes

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

Result

Proceed to

DTCs are not output

A

Immobiliser system DTCs are output

B
A

END
B

GO TO DIAGNOSTIC TROUBLE CODE CHART