Wiper Switch: Inspection

WARNING: This page is about a different car, the 2007 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

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

Standard resistance:

Front Wiper Switch

FRONT WIPER SWITCH

Switch position	Tester Connection	Specified Resistance
MIST	C11-1 (+S)-C11-3(+1)	Below 1 Ω
OFF	C11-1(+S)-C11-3(+1)	Below 1 Ω
INT	C11-1(+S)-C11-3(+1)	Below 1 Ω
LO	C11-2(+B)-C11-3(+1)	Below 1 Ω
HI	C11-2(+B)-C11-4(+2)	Below 1 Ω

Front Washer Switch

FRONT WASHER SWITCH

Switch position	Tester Connection	Specified Resistance
OFF	C25-2 (EW) -C25-3 (WF)	10 kΩ or higher
ON	C25-2 (EW) -C25-3 (WF)	Below 1 Ω

Fig 1: Identifying Windshield Wiper Switch Connector Terminal

Intermittent Operation Check
1. Connect the voltmeter (+) terminal to terminal C11-3 (+1) of the connector and the voltmeter (-) terminal to terminal C25-2 (EW).
2. Connect the positive battery (+) lead to terminal C11-2 (+B) of the connector and the negative battery (-) lead to terminals C25-2 (EW) and C11-1 (+S).
3. Turn the wiper switch to the INT position.
4. Connect the positive battery (+) lead to terminal C11-1 (+S) of the connector for 5 seconds.
5. Connect the negative battery (-) lead to terminal C11-1 (+S) of the connector. Operate the intermittent wiper relay and measure the voltage between terminals C11-3 (+1) and C25-2 (EW).
  Standard: Refer to the illustration below.
  
  Fig 2: Identifying Wiper Relay Blinking Pattern
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Front Washer Operation Check
1. Turn the wiper switch to the OFF position.
2. Connect the positive battery (+) lead to terminal C11-2 (+B) of the connector, and the negative battery (-) to terminals C11-1 (+S) and C25-2 (EW).
3. Connect the voltmeter (+) terminal to terminal C11-3 (+1) of the connector and the voltmeter (-) terminal to terminal C25-2 (EW). Measure the voltage between terminals C11-3 (+1) and C25-2 (EW) when turning the washer switch ON and OFF respectively.
  Standard: Refer to the illustration.
  
  Fig 3: Identifying Washer Switch Blinking Pattern
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002