| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GXJ2 |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: LIGHTING (INT): LIGHTING SYSTEM (for Gasoline Model): Front Door Courtesy Switch Circuit; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022] | ||
|
Front Door Courtesy Switch Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) detects the condition of the front 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
![2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2019]; 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) 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 |
|---|---|---|---|---|
|
FR Door Courtesy SW |
Front door courtesy light switch assembly RH signal |
OFF or ON |
OFF: Front door RH closed ON: Front door RH open |
- |
|
FL Door Courtesy SW |
Front door courtesy light switch assembly LH signal |
OFF or ON |
OFF: Front door LH closed ON: Front door LH open |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
FR Door Courtesy SW |
|
FL Door Courtesy SW |
OK:
Normal conditions listed above are displayed.
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG ("FL Door Courtesy SW" is not normal) |
B |
|
NG ("FR Door Courtesy SW" is not normal) |
C |
| A |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| C |
|
|
|
2. |
INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH |
(a) Remove the front door courtesy light switch assembly LH.
Click here
(b) Inspect the front door courtesy light switch assembly LH.
Click here
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O30-1 - I85-1 (FLCY) |
Always |
Below 1 Ω |
|
O30-1 or I85-1 (FLCY) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH |
(a) Remove the front door courtesy light switch assembly RH.
Click here
(b) Inspect the front door courtesy light switch assembly RH.
Click here
| NG |
|
|
|
5. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O32-1 - I85-6 (FRCY) |
Always |
Below 1 Ω |
|
O32-1 or I85-6 (FRCY) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|