Toyota 4Runner: Inspection

Toyota 4Runner Service Manual / Vehicle Exterior / Wiper / Washer / Wiper Switch / 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
A-1 (+S) - A-3 (+1)	INT
A-2 (+B) - A-3 (+1)	MIST
A-2 (+B) - A-3 (+1)	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
B-2 (EW) - B-3 (WF)	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)	Off	10 kΩ or higher
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)	Off	10 kΩ or higher
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)	On + WASH	Below 1 Ω

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

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

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 ...

Other materials about Toyota 4Runner:

Disposal
DISPOSAL PROCEDURE 1. DISPOSE OF BRAKE BOOSTER ACCUMULATOR ASSEMBLY (a) Place the brake booster accumulator assembly in a vise and cover it with cloth. (b) Using a saw, cut the brake booster acc ...

Power windows
The power windows can be opened and closed using the switches. Operating the switch moves the windows as follows: 1. Closing 2. One-touch closing* 3. Opening 4. One-touch opening* *: Pushing the switch in the opposite direction will stop window tra ...