Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Washer Motor Circuit
DESCRIPTION
When the washer motor and pump assembly receives signals from the windshield wiper switch assembly it operates to spray washer fluid from the washer nozzle sub-assemblies.
WIRING DIAGRAM
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Wiper / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Wiper > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Washer Switch | Washer switch ON position signal | ON or OFF | ON: Front washer switch in ON position OFF: Front washer switch not in ON position | - |
| Tester Display |
|---|
| Washer Switch |
OK:
The Techstream display changes correctly in response to the front washer switch operation.
| NG | .gif) | REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY |
|
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| 2. | INSPECT WASHER MOTOR AND PUMP ASSEMBLY |
(a) Inspect the washer motor and pump assembly.
Click here .gif)
| NG | | REPLACE WASHER MOTOR AND PUMP ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (WASHER MOTOR AND PUMP ASSEMBLY - WINDSHIELD WIPER SWITCH ASSEMBLY) |
(a) Disconnect the A34 washer motor and pump assembly connector.
(b) Disconnect the J31 windshield wiper switch assembly connector.
(c) Disconnect the J33 windshield wiper switch assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J31-5 (WR) - A34-1 | Always | Below 1 Ω |
| J33-7 (WF) - A34-2 | Always | Below 1 Ω |
| J31-5 (WR) or A34-1 - Body ground | Always | 10 kΩ or higher |
| J33-7 (WF) or A34-2 - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Headlight Cleaner Motor and Relay Circuit
DESCRIPTION The headlight cleaner motor and pump assembly is controlled by the headlight ECU sub-assembly RH. When the headlight ECU sub-assembly RH receives the washer switch operation signal 5 times ...
Washer Fluid Level Warning Switch Circuit
DESCRIPTION When the washer fluid level is lower than a certain level, a warning message is displayed on the combination meter assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fus ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Washer Nozzle(for Front Side): Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. REMOVE WASHER NOZZLE SUB-ASSEMBLY (a) Using a screwdriver, disengage the 2 claws as indicated by the arrows, in the order shown in the illustrati ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Headup Display System: Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a meter DTC is detected, the headup display (meter mirror sub-assembly) stores the current vehicle state as freeze frame data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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