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:

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL FOG LIGHT COVER LH (a) Attach the 5 claws to install the fog light cover LH. (b) Install the outside moulding retainer. 2. INSTALL FOG LIGHT COVER RH HINT: Use the same procedure as for the LH side. 3. INSTALL FOG LIGHT ...

High Engine Revolution Signal (C1544)
DESCRIPTION The power steering ECU assembly receives engine speed signals from the ECM via CAN communication. The power steering ECU assembly provides appropriate assisting force in accordance with the engine speed signal. DTC Code ...