Wiper And Washer System: Inspection

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

WINDSHIELD WIPER SWITCH ASSY

Continuity Check

Check the continuity of each terminal of the connector.

Front Wiper Switch

Standard:

TESTER SPECIFIED CONDITION

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

Fig 1: Identifying Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front Washer Switch

Standard:

TESTER SPECIFIED CONDITION

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

w/o 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 2: Checking Voltage Between Terminal 7 (+1) And Terminal 5 (EW)
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 Voltage Between Terminal 7 (+1) And Terminal 5 (EW)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Operation Check (Washer switch)
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).
Standard: See the illustration.

Fig 4: Checking Voltage Between Terminal 7 (+1) And Terminal 5 (EW)

WINDSHIELD WIPER MOTOR ASSY
1. LO Operation Check
  1. Connect the battery (+) to terminal 1 (+1) of the connector, the battery (-) to terminal 5 (E) of the connector, and check that the motor operates at low speed (LO).
2. HI Operation Check
  1. Connect the battery (+) to terminal 4 (+2) of the connector, the battery (-) to terminal 5 (E) of the connector, and check that the motor operates at high speed (HI).
  Fig 5: Identifying Connector Terminal
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Automatic Stop Operation Check
  1. Connect the battery (+) to terminal 1 (+1) of the connector, the battery (-) to terminal 5 (E) of the connector. With the motor being rotated at low speed (LO), disconnect terminal 1 (+1) to stop the wiper motor operation at any position except the automatic stop position.
  2. Connect terminal 1 (+1) and 3 (S), and the battery (+) to terminal 2 (B) to restart the motor operation at low speed.
    SST 09843-18040
  3. Check that the automatic stop position is correct.
  Standard: See the illustration.
Fig 6: Checking Automatic Stop Position Is Correct
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002