Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GXK0
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [01/2019 - 09/2022]
Title: LIGHTING (INT): LIGHTING SYSTEM (for Gasoline Model): Luggage Compartment Door Courtesy Switch Circuit; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022]

Luggage Compartment Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the luggage compartment door courtesy light switch (luggage compartment door lock assembly).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*

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  • *: w/ Smart Key System

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Luggage Courtesy SW

Luggage compartment door courtesy switch signal

OFF or ON

OFF: Luggage compartment door closed

ON: Luggage compartment door open

-

Body Electrical > Main Body > Data List

Tester Display

Luggage Courtesy SW

OK:

Normal conditions listed above are displayed.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT LUGGAGE COMPARTMENT DOOR COURTESY LIGHT SWITCH (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY)

(a) Remove the luggage compartment door courtesy light switch (luggage compartment door lock assembly).

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(b) Inspect the luggage compartment door courtesy light switch (luggage compartment door lock assembly).

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NG

REPLACE LUGGAGE COMPARTMENT DOOR COURTESY LIGHT SWITCH (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY) 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; LIGHTING (INT): BACK DOOR COURTESY SWITCH (for Sedan): REMOVAL 2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 -        ]; LIGHTING (INT): BACK DOOR COURTESY SWITCH (for Sedan): REMOVAL

OK

3.

CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR COURTESY LIGHT SWITCH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

(a) Disconnect the 4A instrument panel junction block assembly connector.

(b) Measure the resistance according to the value (s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

O108-3 (D+) - 4A-34

Always

Below 1 Ω

O108-3 (D+) or 4A-34 - Body ground

Always

10 kΩ or higher

O108-2 (ACT-) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

4A-34 - MB-4 (LGCY)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

NG

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