Lexus NX: Turn Signal Switch Circuit
DESCRIPTION
The combination meter receives the turn signal switch information and controls the turn signal lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, make sure to replace it with a new one.
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM (TURN SIGNAL SWITCH) |
(a) Using the Techstream, read the Data List.
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| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Turn Signal Switch (Right) | Turn signal switch (right) signal | ON or OFF | ON: Turn signal switch (right) on OFF: Turn signal switch (right) off | - |
| Turn Signal Switch (Left) | Turn signal switch (left) signal | ON or OFF | ON: Turn signal switch (left) on OFF: Turn signal switch (left) off | - |
| Tester Display |
|---|
| Turn Signal Switch (Right) |
| Turn Signal Switch (Left) |
| Result | Proceed to |
|---|---|
| Data List values are as specified | A |
| Data List values are not as specified | B |
| A | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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| 2. | INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY (TURN SIGNAL SWITCH) |
(a) Remove the headlight dimmer switch assembly.
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(b) Inspect the headlight dimmer switch assembly.
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| NG | | REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND) |
(a) Disconnect the I126 headlight dimmer switch assembly connector.
(b) Disconnect the I11 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I126-11 (TL) - I11-4 (EL) | Always | Below 1 Ω |
| I126-12 (TR) - I11-3 (ER) | ||
| I126-13 (CR) - I11-8 (SW) | ||
| I126-15 (EL) - Body ground | ||
| I126-11 (TL) - Body ground | Always | 10 kΩ or higher |
| I126-12 (TR) - Body ground | ||
| I26-13 (CR) - Body ground |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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