| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Lighting (ext) | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002WL0004X |
| Title: LIGHTING (EXT): LIGHTING SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DRL Relay Circuit |
DESCRIPTION
The daytime running light relay is built into the turn signal flasher assembly .
When the daytime running light relay receives the ignition switch ON signal from the main body ECU, the turn signal flasher assembly illuminates the turn signal lights. When the daytime running light relay receives the headlight dimmer switch signal, the turn signal flasher assembly turns off the turn signal lights.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
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1. |
INSPECT MAIN BODY ECU |
|
(a) Disconnect the H3 main body ECU connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H3-8 (DRL) - Body ground |
Ignition switch ON |
11 to 14 V |
|
Ignition switch off |
Below 1 V |
|
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2. |
CHECK HARNESS AND CONNECTOR (TURN SIGNAL FLASHER ASSEMBLY - MAIN BODY ECU) |
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(a) Disconnect the H39 turn signal flasher assembly connector. |
(b) Disconnect the H3 main body ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H39-5 (DRL) - H3-8 (DRL) |
Always |
Below 1 Ω |
|
H39-5 (DRL) - Body ground |
Always |
10 kΩ or higher |
(d) Reconnect the main body ECU connector.
(e) Reconnect the turn signal flasher assembly connector.
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