Wiper Switch Inspection

for LHD Windshield Wiper Switch and RHD Windshield Wiper Switch RH Side Type:

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

   Standard Resistance:

   Rear Wiper Switch

   Tester Connection	Switch Condition	Specified Condition
   12 (C1R) - 1 (EW)	OFF	10 kΩ or higher
   10 (+1R) - 1 (EW)
   12 (C1R) - 1 (EW)	LO	Below 1 Ω
   10 (+1R) - 1 (EW)	HI	Below 1 Ω

   Rear Washer Switch

   Tester Connection	Switch Condition	Specified Condition
   11 (WR) - 1 (EW)	OFF	10 kΩ or higher
   10 (+1R) - 1 (EW)
   11 (WR) - 1 (EW)	WASH	Below 1 Ω
   11 (WR) - 1 (EW)	ON + WASH	Below 1 Ω
   10 (+1R) - 1 (EW)

   Text in Illustration

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

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

for RHD Windshield Wiper Switch LH Side Type:

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

   Standard Resistance:

   Rear Wiper Switch

   Tester Connection	Switch Condition	Specified Condition
   16 (C1R) - 9 (EW)	OFF	10 kΩ or higher
   18 (+1R) - 9 (EW)
   16 (C1R) - 9 (EW)	LO	Below 1 Ω
   18 (+1R) - 9 (EW)	HI	Below 1 Ω

   Rear Washer Switch

   Tester Connection	Switch Condition	Specified Condition
   17 (WR) - 9 (EW)	OFF	10 kΩ or higher
   18 (+1R) - 9 (EW)
   17 (WR) - 9 (EW)	WASH	Below 1 Ω
   17 (WR) - 9 (EW)	ON + WASH	Below 1 Ω
   18 (+1R) - 9 (EW)

   Text in Illustration

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

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

for LHD Windshield Wiper Switch and RHD Windshield Wiper Switch RH Side Type:

1. 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)

2. Check the intermittent operation.
   

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

      The 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	Voltage between terminals A-3 (+1) and B-2 (EW)
      *3	Voltage between terminals A-3 (+1) and B-2 (EW)	-	-

for RHD Windshield Wiper Switch LH Side Type:

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

   Standard Resistance:

   Front Wiper Switch

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

   Front Washer Switch:

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

   Rear Wiper Switch:

   Tester Connection	Switch Condition	Specified Condition
   B-5 (C1R) - B-2 (EW)	OFF	10 kΩ or higher
   B-4 (+1R) - B-2 (EW)
   B-5 (C1R) - B-2 (EW)	INT	Below 1 Ω
   B-4 (+1R) - B-2 (EW)	HI	Below 1 Ω

   Rear Washer Switch:

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

2. Check the intermittent operation.
   

   1. Connect the positive (+) lead of a voltmeter to terminal A-2 (+1) and the negative (-) lead to terminal B-2 (EW).
      
   2. Connect the positive (+) lead of the battery to terminal A-3 (+B) and the negative (-) lead to terminal B-2 (EW) and A-4 (+S).
      
   3. Turn the wiper switch to the INT position.
      
   4. Connect the positive (+) lead of the battery to terminal A-4 (+S) for 5 seconds.
      
   
   
   5. Connect the negative (-) lead of the battery to terminal A-4 (+S). Operate the intermittent wiper relay and check the voltage between terminals A-2 (+1) and B-2 (EW).
      

      OK:

      The 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-2 (+1) and B-2 (EW)	*2	Voltage between terminals A-2 (+1) and B-2 (EW)
      *3	SLOW: Connect battery negative lead to terminal A-4 (+S)	-	-