Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001HAPE
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Use this procedure to troubleshoot the theft deterrent system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

CUSTOMER PROBLEM ANALYSIS CHECK

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, whether the problem occurred recently or has been occurring for a long time

Where

Whether the problem occurs at a specific location

Under what conditions?

Whether the doors were locked or unlocked, whether the power switch was on (IG), whether the hybrid control system has started.

How did it happen?

Problem symptoms
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3.

READ AND SAVE OPERATION HISTORY

NOTICE:

  • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
  • The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.

(a) Read and save operation history using the Techstream.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM (for HV Model): CHECK FOR INTERMITTENT PROBLEMS

Body Electrical > Main Body > Utility

Tester Display

Operation History
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4.

PRE-CHECK

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

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

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

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5.

SYMPTOM SIMULATION
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6.

INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

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

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

A

7.

CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) Check the power door lock control system.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Sedan, HV Model): OPERATION CHECK

OK:

Power door lock control system is normal

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

8.

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check the wireless door lock control system.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (for HV Model): OPERATION CHECK

OK:

Wireless door lock control system is normal

NG

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

OK

9.

CHECK SMART KEY SYSTEM (for Entry Function)

(a) Check the smart key system (for Entry Function).

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): OPERATION CHECK 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): OPERATION CHECK

OK:

Smart key system (for Entry Function) is normal

NG

GO TO SMART KEY SYSTEM (for Smart Entry Function)

OK

10.

CHECK SMART KEY SYSTEM (for Start Function)

(a) Check the smart key system (for Start Function).

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): OPERATION CHECK 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): OPERATION CHECK

OK:

Smart key system (for Start Function) is normal

NG

GO TO SMART KEY SYSTEM (for Start Function)

OK

11.

CHECK LIGHTING SYSTEM (EXT)

(a) Check the lighting system (EXT).

Click here 2020 - 2021 MY Corolla Corolla HV [01/2019 - 06/2021]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model): OPERATION CHECK 2022 MY Corolla Corolla HV [06/2021 - 09/2022]; LIGHTING (EXT): LIGHTING SYSTEM (for HV Model): OPERATION CHECK

OK:

Lighting system (EXT) is normal

NG

GO TO LIGHTING SYSTEM (EXT)

OK

12.

CHECK LIGHTING SYSTEM (INT)

(a) Check the lighting system (INT).

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

OK:

Lighting system (INT) is normal

NG

GO TO LIGHTING SYSTEM (INT)

OK

13.

CHECK HORN SYSTEM

(a) Check the horn system.

OK:

Horn system is normal

NG

GO TO HORN SYSTEM

OK

14.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in Problem Symptoms Table (Fault can be simulated)

A

Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)

B

Fault is listed in Problem Symptoms Table

C
B

CHECK FOR INTERMITTENT PROBLEMS

C

GO TO STEP 16

A

15.

PERFORM OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) System Description

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM (for HV Model): SYSTEM DESCRIPTION

(b) Terminals of ECU

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM (for HV Model): TERMINALS OF ECU

(c) Data List / Active Test

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM (for HV Model): DATA LIST / ACTIVE TEST

(d) Inspection

NEXT

16.

REPAIR OR REPLACE
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17.

CONFIRMATION TEST
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END