| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000028DBE |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: LIGHTING (INT): LIGHTING SYSTEM: Back Door Courtesy Switch Circuit; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
|
Back Door Courtesy Switch Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) receives a back door open/closed signal from back door lock with 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
![2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
- *: w/ Smart Key System
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) 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 |
|---|---|---|---|---|
|
Back Door Courtesy Switch Status |
Back door courtesy switch signal |
Close or Open |
Close: Back door closed Open: Back door open |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
Back Door Courtesy Switch Status |
OK:
Normal conditions listed above are displayed.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
2. |
INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY |
(a) Inspect the back door lock with courtesy light switch assembly.
Click here
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND) |
(a) Disconnect the 8H power distribution box assembly connector.
(b) Measure the resistance according to the value (s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
V3-3 (D+) - 8H-5 |
Always |
Below 1 Ω |
|
V3-3 (D+) or 8H-5 - Body ground |
Always |
10 kΩ or higher |
|
V3-2 (ACT-) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
INSPECT POWER DISTRIBUTION BOX ASSEMBLY |
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Click here
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
8H-5 - MB-19 (BCTY) |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
|
|