Toyota 4Runner: Washer Fluid Level Warning Switch Circuit
DESCRIPTION
When the volume of washer fluid decreases to below a certain level (when the level warning switch is turned on), the multi-information display in the combination meter assembly displays "LOW WASHER FLUID" to warn the driver.
WIRING DIAGRAM
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (WASHER SWITCH) |
(a) Use the Data List to check if the level warning switch assembly is functioning
properly (See page .gif)
).
Combination Meter
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Washer Switch |
Level warning switch / ON or OFF |
ON: Washer jar and tank empty OFF: Washer jar and tank full |
- |
OK:
On the Techstream screen, each item changes between ON and OFF according to the above chart.
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
|
2. |
INSPECT LEVEL WARNING SWITCH ASSEMBLY |
(a) Inspect the level warning switch assembly (See page
).
| NG | |
REPLACE WASHER FLUID LEVEL WARNING SWITCH ASSEMBLY |
|
|
3. |
CHECK WASHER WIRING ASSEMBLY |
(a) Disconnect the A27 and LW washer wiring assembly connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A27-3 (S) - LW-1 |
Always |
Below 1 Ω |
|
A27-6 (E) - LW-2 |
Always |
Below 1 Ω |
|
A27-3 (S) or LW-1 - Body ground |
Always |
10 kΩ or higher |
|
A27-6 (E) or LW-2 - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPLACE WASHER WIRING ASSEMBLY |
|
|
4. |
CHECK HARNESS AND CONNECTOR (LEVEL WARNING SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND) |
(a) Disconnect the A27 washer wiring assembly connector.
(b) Disconnect the F14 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A27-3 (S) - F14-27 (WLVL) |
Always |
Below 1 Ω |
|
A27-6 (E) - Body ground |
Always |
Below 1 Ω |
|
A27-3 (S) or F14-27 (WLVL) - Body ground |
Always |
10 kΩ or higher |
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Rear Washer does not Operate
DESCRIPTION
The windshield wiper switch controls the rear washer motor and pump.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before perf ...
Wiper Switch
...
Other materials about Toyota 4Runner:
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT VOLTAGE INVERTER ASSEMBLY
HINT:
Remove interior parts so that the voltage inverter can be seen.
(a) Disconnect the voltage inverter connector.
(b) Measur ...
Power Mirror Control System
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSION
HINT:
The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
...
0.0124