| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000014V5W |
| Model Year Start: 2018 | Model: Camry | Prod Date Range: [06/2017 - ] |
| Title: LIGHTING (INT): LIGHTING SYSTEM: Footwell Light Circuit; 2018 - 2024 MY Camry [06/2017 - ] | ||
|
Footwell Light Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the operation of the following lights:
- Footwell Light LH (No. 1 Interior Illumination Light Assembly)
- Footwell Light RH (No. 1 Interior Illumination Light Assembly)
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
![2018 - 2019 MY Camry [03/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION](/t3Portal/stylegraphics/info.gif)
- *: w/ Smart Key System
PROCEDURE
|
1. |
PERFORM ACTIVE TEST 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 / Active Test.
(e) 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 |
|---|---|---|---|
|
Fr Foot Light |
Footwell light (No. 1 interior illumination light assembly) |
OFF or ON |
Preconditions for using the Active Test to check dimmer controlled illumination:
|
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Fr Foot Light |
OK:
Footwell lights come on.
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (Footwell light LH does not come on) |
B |
|
NG (Footwell light RH does not come on) |
C |
|
NG (Footwell light LH and RH do not come on) |
D |
| A |
|
USE SIMULATION METHOD TO CHECK
|
| C |
|
| D |
|
|
|
2. |
INSPECT FOOTWELL LIGHT LH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) |
(a) Remove the footwell light LH (No. 1 interior illumination light assembly).
Click here
(b) Inspect the footwell light LH (No. 1 interior illumination light assembly).
Click here
| NG |
|
REPLACE FOOTWELL LIGHT LH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (FOOTWELL LIGHT LH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3A and 3B instrument panel junction block assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
K84-1 (E) - 3A-36 |
Always |
Below 1 Ω |
|
K84-2 (B) - 3B-27 |
Always |
Below 1 Ω |
|
K84-1 (E) or 3A-36 - Body ground |
Always |
10 kΩ or higher |
|
K84-2 (B) or 3B-27 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(a) Disconnect the 3F 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 |
|---|---|---|
|
3B-27 - 3F-1 |
Always |
Below 1 Ω |
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|
5. |
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
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3A-36 - MB-26 (FSPT) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
6. |
INSPECT FOOTWELL LIGHT RH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) |
(a) Remove the footwell light RH (No. 1 interior illumination light assembly).
Click here
(b) Inspect the footwell light RH (No. 1 interior illumination light assembly).
Click here
| NG |
|
REPLACE FOOTWELL LIGHT RH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) |
|
|
7. |
CHECK HARNESS AND CONNECTOR (FOOTWELL LIGHT RH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3A and 3B instrument panel junction block assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
K83-1 (E) - 3A-37 |
Always |
Below 1 Ω |
|
K83-2 (B) - 3B-25 |
Always |
Below 1 Ω |
|
K83-1 (E) or 3A-37 - Body ground |
Always |
10 kΩ or higher |
|
K83-2 (B) or 3B-25 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(a) Disconnect the 3F 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 |
|---|---|---|
|
3B-25 - 3F-1 |
Always |
Below 1 Ω |
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|
9. |
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
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3A-37 - MB-26 (FSPT) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
10. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3F 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 |
|---|---|---|
|
3F-1 - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
11. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(a) Disconnect the 3B 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 |
|---|---|---|
|
3B-27 - 3F-1 |
Always |
Below 1 Ω |
|
3B-25 - 3F-1 |
Always |
Below 1 Ω |
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|
12. |
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
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3A-36 - MB-26 (FSPT) |
Always |
Below 1 Ω |
|
3A-37 - MB-26 (FSPT) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|