| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026126 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - 11/2022] |
| Title: LIGHTING (INT): LIGHTING SYSTEM (for TMMMS Made): Door Illumination Circuit; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] | ||
|
Door Illumination Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the operation of the following lights:
- Door Ambient Illumination Light LH (Front Door Trim Board Sub-assembly LH)
- Door Ambient Illumination Light RH (Front Door Trim Board Sub-assembly RH)
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here
![2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function (Gasoline Model, TMMMS Made)): REGISTRATION](/t3Portal/stylegraphics/info.gif)
- *: w/ Smart Key System
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Interior Illumination Light1 |
|
OFF or ON |
Preconditions for using the Active Test to check dimmer controlled illumination:
|
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Interior Illumination Light1 |
OK:
Door ambient illumination lights come on.
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (Door ambient illumination light LH does not come on) |
B |
|
NG (Door ambient illumination light RH does not come on) |
C |
|
NG (All door ambient illumination light do not come on) |
D |
| A |
|
| C |
|
| D |
|
|
|
2. |
INSPECT DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH) |
(a) Inspect the door ambient illumination light LH (front door trim board sub-assembly LH).
Click here
| NG |
|
REPLACE DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 4F 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 |
|---|---|---|
|
L5-2 (+) - 4F-27 |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (DOOR AMBIENT ILLUMINATION LIGHT LH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY LH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the I84 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 |
|---|---|---|
|
L5-1 (-) - I84-20 (LED1) |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) |
(a) Inspect the door ambient illumination light RH (front door trim board sub-assembly RH).
Click here
| NG |
|
REPLACE DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) |
|
|
6. |
CHECK HARNESS AND CONNECTOR (DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 4F 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 |
|---|---|---|
|
K6-2 (+) - 4F-24 |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
CHECK HARNESS AND CONNECTOR (DOOR AMBIENT ILLUMINATION LIGHT RH (FRONT DOOR TRIM BOARD SUB-ASSEMBLY RH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the I84 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 |
|---|---|---|
|
K6-1 (-) - I84-20 (LED1) |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 4D instrument panel junction block assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4D-1 - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(a) Disconnect the 4F 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 |
|---|---|---|
|
4F-24 - 4D-1 |
Always |
Below 1 Ω |
|
4F-27 - 4D-1 |
Always |
Below 1 Ω |
| NG |
|
|
|
10. |
CHECK HARNESS AND CONNECTOR (DOOR AMBIENT ILLUMINATION LIGHT (FRONT DOOR TRIM BOARD SUB-ASSEMBLY) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the L5 door ambient illumination light LH (front door trim board sub-assembly LH) connector.
(b) Disconnect the K6 door ambient illumination light RH (front door trim board sub-assembly RH) connector.
(c) Disconnect the I84 main body ECU (multiplex network body ECU) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L5-1 (-) - I84-20 (LED1) |
Always |
Below 1 Ω |
|
K6-1 (-) - I84-20 (LED1) |
Always |
Below 1 Ω |
|
L5-1 (-), K6-1 (-) or I84-20 (LED1) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|