Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012UHJ
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 -           ]
Title: LIGHTING (INT): LIGHTING SYSTEM: Rear Door Courtesy Switch Circuit; 2018 - 2024 MY Camry [03/2017 -        ]

Rear Door Courtesy Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2020 - 2022 MY Camry [09/2019 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

  • *: 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

RR Door Courtesy SW

Rear door courtesy light switch assembly RH signal

OFF or ON

OFF: Rear door RH closed

ON: Rear door RH open

-

RL Door Courtesy SW

Rear door courtesy light switch assembly LH signal

OFF or ON

OFF: Rear door LH closed

ON: Rear door LH open

-

Body Electrical > Main Body > Data List

Tester Display

RR Door Courtesy SW

RL Door Courtesy SW

OK:

Normal conditions listed above are displayed.

Result

Proceed to

OK

A

"RR Door Courtesy SW" is not normal

B

"RL Door Courtesy SW" is not normal

C

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2018 MY Camry [03/2017 - 06/2017]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2020 - 2021 MY Camry [09/2019 - 08/2021]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2022 - 2024 MY Camry [08/2021 -        ]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE

C

GO TO STEP 5

B

2.

INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

(a) Remove the rear door courtesy light switch assembly RH.

Click here 2018 MY Camry [03/2017 - 06/2017]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2020 MY Camry [09/2019 - 10/2020]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL

(b) Inspect the rear door courtesy light switch assembly RH.

Click here 2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: INSPECTION

NG

REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH 2018 MY Camry [03/2017 - 06/2017]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2020 MY Camry [09/2019 - 10/2020]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL

OK

3.

CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 3A 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

R6-1 - 3A-31

Always

Below 1 Ω

R6-1 or 3A-31 - Body ground

Always

10 kΩ or higher

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 instrument panel junction block assembly.

Click here 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

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

Click here 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3A-31 - MB-2 (RCTY)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

5.

INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

(a) Remove the rear door courtesy light switch assembly LH.

Click here 2018 MY Camry [03/2017 - 06/2017]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2020 MY Camry [09/2019 - 10/2020]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL

(b) Inspect the rear door courtesy light switch assembly LH.

Click here 2018 - 2024 MY Camry [03/2017 -        ]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: INSPECTION

NG

REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH 2018 MY Camry [03/2017 - 06/2017]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2018 - 2019 MY Camry [06/2017 - 09/2019]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2020 MY Camry [09/2019 - 10/2020]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; LIGHTING (INT): REAR DOOR COURTESY SWITCH: REMOVAL

OK

6.

CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 3D 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

R7-1 - 3D-24

Always

Below 1 Ω

R7-1 or 3D-24 - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

(a) Remove the instrument panel junction block assembly.

Click here 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

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

Click here 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3D-24 - MB-13 (LCTY)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL