| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000014T2J |
| Model Year Start: 2018 | Model: Camry | Prod Date Range: [06/2017 - ] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM: Daytime Running Light Circuit; 2018 - 2024 MY Camry [06/2017 - ] | ||
|
Daytime Running Light Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the daytime running lights.
WIRING DIAGRAM
for Bulb Type Turn Signal Light
for LED Type Turn Signal Light
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. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
for Bulb Type Turn Signal Light |
A |
|
for LED Type Turn Signal Light |
B |
| B |
|
|
|
2. |
CHECK OPERATION (LOW BEAM HEADLIGHTS) |
(a) Check the operation of the low beam headlights.
OK:
The low beam headlights operate normally.
| NG |
|
GO TO PROBLEM SYMPTOMS TABLE
|
|
|
3. |
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 |
|---|---|---|---|
|
Daytime Running Light |
Daytime running lights |
OFF or ON |
- |
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Daytime Running Light |
OK:
Daytime running lights illuminate.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the A51 headlight assembly LH connector.
(b) Disconnect the A50 headlight assembly RH connector.
(c) Disconnect the 3C instrument panel junction block assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A51-6 (B) - 3C-28 |
Always |
Below 1 Ω |
|
A50-6 (B) - 3C-28 |
Always |
Below 1 Ω |
|
A51-6 (B) or 3C-28 - Body ground |
Always |
10 kΩ or higher |
|
A50-6 (B) or 3C-28 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
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.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3C-28 - MB-25 (DRL) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
6. |
CHECK OPERATION (PARKING LIGHTS) |
(a) Check the operation of the parking lights.
OK:
The parking lights operate normally.
| NG |
|
GO TO PROBLEM SYMPTOMS TABLE
|
|
|
7. |
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 |
|---|---|---|---|
|
Daytime Running Light |
Daytime running lights |
OFF or ON |
- |
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Daytime Running Light |
OK:
Daytime running lights illuminate.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
8. |
INSPECT DRL RELAY |
(a) Inspect the DRL relay.
Click here
| NG |
|
REPLACE DRL RELAY |
|
|
9. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - DRL RELAY) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 (DRL relay) - Body ground |
Always |
11 to 14 V |
|
3 (DRL relay) - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
10. |
CHECK HARNESS AND CONNECTOR (DRL RELAY - HEADLIGHT ASSEMBLY) |
(a) Disconnect the A75 headlight assembly LH connector.
(b) Disconnect the A74 headlight assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
5 (DRL relay) - A75-1 (B) |
Always |
Below 1 Ω |
|
5 (DRL relay) - A74-1 (B) |
Always |
Below 1 Ω |
|
5 (DRL relay) or A75-1 (B) - Body ground |
Always |
10 kΩ or higher |
|
5 (DRL relay) or A74-1 (B) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
11. |
CHECK HARNESS AND CONNECTOR (DRL RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3C 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 |
|---|---|---|
|
2 (DRL relay) - 3C-28 |
Always |
Below 1 Ω |
|
2 (DRL relay) or 3C-28 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
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.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3C-28 - MB-25 (DRL) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|