Toyota 4Runner: Inspection
INSPECTION
PROCEDURE
1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Front Wiper Switch
Tester Connection
|
Switch Condition
|
Specified Condition
|
A-1 (+S) - A-3 (+1)
|
Off
|
Below 1 Ω
|
INT
|
A-2 (+B) - A-3 (+1)
|
MIST
|
LO
|
A-2 (+B) - A-4 (+2)
|
HI
|
Front Washer Switch
Tester Connection
|
Switch Condition
|
Specified Condition
|
B-2 (EW) - B-3 (WF)
|
On
|
Below 1 Ω
|
Off
|
10 kΩ or higher
|
Rear Wiper Switch
Tester Connection
|
Switch Condition
|
Specified Condition
|
B-6 (C1R) - B-2 (EW)
|
Off
|
10 kΩ or higher
|
B-7 (+1R) - B-2 (EW)
|
B-6 (C1R) - B-2 (EW)
|
INT
|
Below 1 Ω
|
B-7 (+1R) - B-2 (EW)
|
HI
|
Below 1 Ω
|
Rear Washer Switch
Tester Connection
|
Switch Condition
|
Specified Condition
|
A-5 (WR) - B-2 (EW)
|
Off
|
10 kΩ or higher
|
B-7 (+1R) - B-2 (EW)
|
A-5 (WR) - B-2 (EW)
|
WASH
|
Below 1 Ω
|
A-5 (WR) - B-2 (EW)
|
On + WASH
|
Below 1 Ω
|
B-7 (+1R) - B-2 (EW)
|
If the result is not as specified, replace the windshield wiper switch
assembly.
Text in Illustration
*a
|
Component without harness connected
(Windshield Wiper Switch Assembly)
|
|
|
(b) Check the intermittent operation.
- Connect the positive (+) lead of a voltmeter to terminal A-3 (+1) and
the negative (-) lead to terminal B-2 (EW).
- Connect the positive (+) lead of the battery to terminal A-2 (+B) and
the negative (-) lead to terminal B-2 (EW) and A-1 (+S).
- Turn the wiper switch to the INT position.
- Connect the positive (+) lead of the battery to terminal A-1 (+S) for
5 seconds.
- Connect the negative (-) lead of the battery to terminal A-1 (+S). Operate
the intermittent wiper relay and check the voltage between terminals A-3
(+1) and B-2 (EW).
OK:
Voltage changes as shown in the illustration.
If the result is not as specified, replace the windshield wiper switch
assembly.
Text in Illustration
*1
|
Voltage between terminals A-3 (+1) and B-2 (EW)
|
*2
|
FAST: Negative lead of battery connected to terminal A-1 (+S)
|
*3
|
SLOW: Negative lead of battery connected to terminal A-1 (+S)
|
-
|
-
|
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
2. RE ...
INSTALLATION
PROCEDURE
1. INSTALL WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Attach the claw to install the windshield wiper switch assembly.
(b) Connect the 2 connectors.
2. INSTALL UPPER STEERING COL ...
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INSPECTION
PROCEDURE
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