Wiper Switch Inspection

INSPECT WIPER AND WASHER SWITCH ASSEMBLY (for LHD)
INSPECT WIPER AND WASHER SWITCH ASSEMBLY (for RHD)

Wiper Switch -- Inspection

1. INSPECT WIPER AND WASHER SWITCH ASSEMBLY (for LHD)

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Wiper And Washer.Wiper Switch.Wiper Switch Inspection

Measure the resistance of the switch.

Standard resistance:

Windshield wiper switch

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

Windshield washer switch:

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

Rear wiper and washer switch:

Tester Connection	Switch Condition	Specified Condition
A-2 (EW) - B-5 (WR)	WASH (Rear wiper switch ON position side)	Below 1 Ω
A-2 (EW) - B-5 (WR)	OFF	10 kΩ or higher
A-7 (+1R) - B-5 (WR)	OFF	10 kΩ or higher
A- 2 (EW) - A-7 (+1R)	OFF	10 kΩ or higher
A- 2 (EW) - A-7 (+1R)	ON	Below 1 Ω
A-2 (EW) - B-5 (WR)	WASH (Rear wiper switch ON position side)	Below 1 Ω
A-7 (+1R) - B-5 (WR)	WASH (Rear wiper switch ON position side)	Below 1 Ω
A- 2 (EW) - A-7 (+1R)	WASH (Rear wiper switch ON position side)	Below 1 Ω

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

Check the intermittent operation.
1. Connect the voltmeter's positive (+) lead to terminal B-3 (+1) and the negative (-) lead to terminal A-2 (EW).
2. Connect the battery's positive (+) lead to terminal B-2 (+B) and the negative (-) lead to terminals A-2 (EW) and B-1 (+S).
3. Turn the wiper switch to the INT position.
4. Connect the battery's positive (+) lead to terminal B-1 (+S) for 5 seconds.
5. 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 illustration below.
  
  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 illustration below.
  
  If the result is not as specified, replace the switch assembly.

2. INSPECT WIPER AND WASHER SWITCH ASSEMBLY (for RHD)

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Wiper And Washer.Wiper Switch.Wiper Switch Inspection

Measure the resistance of the switch.

Standard resistance:

Windshield wiper switch

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

Windshield washer switch:

Tester Connection	Switch Condition	Specified Condition
A-1 (WF) - A-2 (EW)	OFF	10 kΩ or higher
A-1 (WF) - A-2 (EW)	ON	Below 1 Ω

Rear wiper and washer switch:

Tester Connection	Switch Condition	Specified Condition
A-2 (EW) - B-10 (WR)	WASH (Rear wiper switch ON position side)	Below 1 Ω
A-2 (EW) - B-10 (WR)	OFF	10 kΩ or higher
A-4 (+1R) - B-10 (WR)	OFF	10 kΩ or higher
A-2 (EW) - A-4 (+1R)	OFF	10 kΩ or higher
A-2 (EW) - A-4 (+1R)	ON	Below 1 Ω
A-2 (EW) - B-10 (WR)	WASH (Rear wiper switch ON position side)	Below 1 Ω
A-4 (+1R) - B-10 (WR)	WASH (Rear wiper switch ON position side)	Below 1 Ω
A-2 (EW) - A-4 (+1R)	WASH (Rear wiper switch ON position side)	Below 1 Ω

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

Check the intermittent operation.
1. Connect the voltmeter's positive (+) lead to terminal B-2 (+1) and the negative (-) lead to terminal A-2 (EW).
2. Connect the battery's positive (+) lead to terminal B-3 (+B) and the negative (-) lead to terminals A-2 (EW) and B-4 (+S).
3. Turn the wiper switch to the INT position.
4. Connect the battery's positive (+) lead to terminal B-4 (+S) for 5 seconds.
5. Connect the battery's negative (-) lead to terminal B-4 (+S). Operate the intermittent wiper relay and check the voltage between terminals B-2 (+1) and A-2 (EW).
  OK:
  Refer to illustration below.
  
  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-3 (+B) and the negative (-) lead to terminals B-4 (+S) and A-2 (EW).
3. Connect the voltmeter's positive (+) lead to terminal B-2 (+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-2 (+1) and A-2 (EW).
  OK:
  Refer to illustration below.
  
  If the result is not as specified, replace the switch assembly.