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 |
READ NEXT:
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:
Inspection
INSPECTION CAUTION / NOTICE / HINT NOTICE:
When using a vise, place aluminum plates between the part and vise.
When using a vise, do not overtighten it.
PROCEDURE 1. INSPECT ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY (a) Secure the electric power steering column sub-assembly in a vise. (
Precaution
PRECAUTION PRECAUTION FOR SERVICING VEHICLE (a) After ECUs or parts are removed and installed, or replaced during inspection or servicing the vehicle, it is necessary to perform certain procedures (adjustment, calibration, initialization or registration). Click here PRECAUTION FOR TROUBLESHOOTING
