Lexus NX: Washer Fluid Level Warning Switch Circuit
DESCRIPTION
When the volume of washer fluid decreases to below a certain level (when the level warning switch assembly is turned on), the multi-information display warns the driver by displaying a message.
WIRING DIAGRAM
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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 |
(a) Read the Data List according to the display on the Techstream.
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| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Washer Switch | Level warning switch condition | ON/OFF | ON: Fluid volume is less than 600 to 800 cc (36.6 to 48.8 cu.in.) OFF: Fluid volume is more than 600 to 800 cc (36.6 to 48.8 cu.in.) | - |
| Tester Display |
|---|
| Washer Switch |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| OK | .gif) | GO TO METER / GAUGE SYSTEM |
|
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| 2. | INSPECT LEVEL WARNING SWITCH ASSEMBLY |
(a) Disconnect the A22 level warning switch assembly connector.
(b) Inspect the level warning switch assembly.
Click here
| NG | | REPLACE LEVEL WARNING SWITCH ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (LEVEL WARNING SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND) |
(a) Disconnect the A22 level warning switch assembly connector.
(b) Disconnect the I10 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A22-1 (S) - I10-16 (WLVL) | Always | Below 1 Ω |
| A22-2 (E) - Body ground | Always | Below 1 Ω |
| A22-1 (S) or I10-16 (WLVL) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE COMBINATION METER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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