Wiper Washer. Wiper Switch Inspection

Vehicle Exterior. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

Wiper Washer. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

Wiper Switch -- Inspection

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

Check the front wiper switch.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
B-3 (+1) - B-2 (+B)	MIST	Below 1 Ω
B-3 (+1) - B-1 (+S)	OFF	Below 1 Ω
B-3 (+1) - B-1 (+S)	INT	Below 1 Ω
B-3 (+1) - B-2 (+B)	LO	Below 1 Ω
B-4 (+2) - B-2 (+B)	HI	Below 1 Ω

Check the windshield washer switch.
1. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Switch Condition
  Specified Condition
  A-3 (WF) - A-2 (EW)
  OFF
  10 kΩ or higher
  A-3 (WF) - A-2 (EW)
  ON
  Below 1 Ω
  If the result is not as specified, replace the switch assembly.
  Text in Illustration
  *a
  Component without harness connected
  (Windshield Wiper Switch Assembly)

Text in Illustration
*a	Component without harness connected (Windshield Wiper Switch Assembly)

Check the intermittent operation.

Connect a voltmeter's positive (+) lead to terminal B-3 (+1) and the negative (-) lead to terminal A-2 (EW).
Connect the battery's positive (+) lead to terminal B-2 (+B) and the negative (-) lead to terminals A-2 (EW) and B-1 (+S).
Turn the wiper switch to the INT position.
Connect the battery's positive (+) lead to terminal B-1 (+S) for 5 seconds.

Connect the battery's negative (-) lead to terminal B-1 (+S). operate the intermittent wiper relay and check the voltage between terminals B-3 (+1) and A-2 (EW).

OK:: Refer to the illustration below.

Text in Illustration
*a	Voltage between terminals B-3 (+1) and A-2 (EW)	*b	Battery negative lead is connected to terminal B-4 (+S)
*c	Battery negative lead is connected to terminal B-4 (+S)	*d	1.6 +/-1 second (interval is short)
*e	10.7 +/-5 second (interval is long)	-	-

If the result is not as specified, replace the switch assembly.

Check the washer operation.
1. Turn the wiper switch off.
2. Connect the battery's positive (+) lead to terminal B-2 (+B) and the negative (-) lead to terminals B-1 (+S) and A-2 (EW).
3. Connect the voltmeter's positive (+) lead to terminal B-3 (+1) and the negative (-) lead to terminal A-2 (EW).
4. Turn the washer switch on and off, and check the voltage between terminals B-3 (+1) and A-2 (EW).
  OK:
  Refer to the illustration below.
  
  Text in Illustration
  *1
  Washer Switch
  -
  -
  *a
  Voltage between terminals A-2 (EW) and B-3 (+1)
  -
  -
  If the result is not as specified, replace the switch assembly.

*1	Washer Switch	-	-
*a	Voltage between terminals A-2 (EW) and B-3 (+1)	-	-