Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001GXJK
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: LIGHTING (INT): LIGHTING 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 the following procedure to troubleshoot the lighting system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

CUSTOMER PROBLEM ANALYSIS AND SYMPTOM 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

    Where

    Road conditions

    Under what conditions?

    Driving conditions, weather conditions

    How did it happen?

    Problem symptoms
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3.

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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4.

CHECK 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

5.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): 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 PROBLEM SYMPTOMS TABLE 2020 MY Corolla Corolla HV [01/2019 - 04/2020]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE

A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check.

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

(b) Terminals of ECU.

Click here 2020 - 2021 MY Corolla Corolla HV [01/2019 - 06/2021]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): TERMINALS OF ECU 2022 MY Corolla Corolla HV [06/2021 - 09/2022]; LIGHTING (INT): LIGHTING SYSTEM (for HV Model): TERMINALS OF ECU

(c) Data List / Active Test.

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

(d) Inspection.

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7.

ADJUST, REPAIR OR REPLACE
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8.

CONFIRMATION TEST
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END