Wiper Switch: Inspection

INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

Continuity Check

Check the continuity of each terminal of the connector.

Standard:

Front Wiper Switch

Fig 1: Identifying Windshield Wiper Switch Assembly Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

FRONT WIPER SWITCH CONTINUITY CHART

Switch position	Tester connection	Specified condition
MIST	7 (+1) - 8 (+B)	Continuity
OFF	6 (+S) - 7 (+1)	Continuity
INT	6 (+S) - 7 (+1)	Continuity
LO	7 (+1) - 8 (+B)	Continuity
HI	8 (+B) - 9 (+2)	Continuity

Front Washer Switch

FRONT WASHER SWITCH CONTINUITY CHART

Switch position	Tester connection	Specified condition
OFF 4 (W) - 5 (EW)	No	continuity
ON	4 (W) - 5 (EW)	Continuity

Rear Wiper and Washer Switch

REAR WIPER AND WASHER SWITCH CONTINUITY CHART

Switch position	Tester connection	Specified condition
WASH (Rear wiper switch OFF position side)	3 (WR) - 5 (EW)	Continuity
OFF	1 (C1R) - 5 (EW) 2 (+1R) - 5 (EW) 3 (WR) - 5 (EW) No	continuity
LO	1 (C1R) - 5 (EW)	Continuity
HI	2 (+1R) - 5 (EW)	Continuity
WASH (Rear wiper switch ON position side)	2 (+1R) - 5 (EW) 3 (WR) - 5 (EW)	Continuity

w/o Intermittent time adjust:
Intermittent Operation Check
1. Connect the voltmeter (+) terminal to terminal 7 (+1) the connector, the voltmeter (-) terminal to terminal 5 (EW) of the connector.
2. Connect the battery (+) to terminal 8 (+B) of the connector, the battery (-) to terminal 5 (EW) and 6 (+S) of the connector.
3. Turn the wiper switch to the INT position.
4. Connect the battery (+) to terminal 6 (+S) of the connector for 5 seconds.
5. Connect the battery (-) to terminal 6 (+S) of the connector. Operate the intermittent wiper relay and check voltage between terminal 7 (+1) and terminal 5 (EW).
  
  Fig 2: Checking Intermittent Operation (W/O Intermittent Time Adjust)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
w/ Intermittent time adjust:
Intermittent Operation Check
1. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminal to terminal 5 (EW) of the connector.
2. Connect the battery (+) to terminal 8 (+B) of the connector, the battery (-) to terminal 5 (EW) and 6 (+S) of the connector.
3. Turn the wiper switch to the INT position.
4. Connect the battery (+) to terminal 6 (+S) of the connector for 5 seconds.
5. Connect the battery (-) to terminal 6 (+S) of the connector. Operate the intermittent wiper relay and check voltage between terminal 7 (+1) and terminal 5 (EW).
  
  Fig 3: Checking Intermittent Operation (W/ Intermittent Time Adjust)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Front Washer Linked Operation Check
1. Turn the wiper switch to the OFF position.
2. Connect the battery (+) to terminal 8 (+B) of the connector, the battery (-) to terminal 6 (+S) and 5 (EW) of the connector.
3. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminal to terminal 5 (EW) of the connector. Turn the washer switch to ON and OFF and check voltage between terminal 7 (+1) and terminal 5 (EW).
  
  Fig 4: Checking Front Washer Linked Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002