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.
Click here .gif)
| 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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Components
COMPONENTS ILLUSTRATION *1 DECK FLOOR BOX LH *2 NO. 3 DECK BOARD SUB-ASSEMBLY *3 REAR DECK FLOOR BOX *4 NEGATIVE AUXILIARY BATTERY TERMINAL N*m (kgf*cm, ft.*lbf): Specified
Removal
REMOVAL PROCEDURE 1. PRECAUTION CAUTION: Be sure to read Precoution thoroughly before serving. Click here NOTICE: After the power switch is turned off, there may be a waiting time before disconnecti
SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE REAR SEAT ASSEMBLY (a) for Manual Seat: Click here (b) for Power Seat: Click here 2. REMOVE REAR FLOOR FINISH PLATE Click here 3. DISCONNECT REAR DOOR OPENING TRIM WEATHERSTRIP RH Click here 4. REMOVE UPPER DECK TRIM SIDE BOARD RH Click here 5. REMOVE ROPE HO
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Rain Sensor *B w/ Headlight Cleaner System *C for Triple Beam Headlight *D for Single Beam Headlight *1 WINDSHIELD WIPER MOTOR ASSEMBLY *2 HEADLIGHT CLEANER CONTROL RELAY *3 HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY *4 RAIN SE
