Toyota Highlander Service Manual: Inspection

1. WINDSHIELD WIPER SWITCH ASSY

(a) Continuity Check

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

Standard:

Front Wiper Switch

Front Washer Switch

Rear Wiper and Washer Switch

(b) Intermittent Operation Check

1.  Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminals to terminal 2 (EW) of the connector.
2.  Connect the battery (+) to terminal 17 (+B) of the connector, the battery (-) to terminal 2 (EW) and 16 (+S) of the connector.
3.  Turn the wiper switch to INT.
4.  Connect the battery (+) to terminal 16 (+S) of the connector for 5 seconds.
5. Connect the battery (-) to terminal 16 (+S) of the connector. Operate the intermittent wiper relay and check voltage between terminal 7 (+1) and terminal 2 (EW).

(c) Operation Check (Front Wiper)

1.  Turn the wiper switch OFF.
2.  Connect the positive (+) lead from the battery to terminal 17 (+B) and the negative (-) lead to terminals 2 (EW) and 16 (+S).
3.  Connect the positive (+) lead from the voltmeter to terminal 7 (+1) and the negative (-) lead to terminal 2 (EW).Turn the washer switch ON and OFF and check voltage between terminal 7 (+1) and terminal 2 (EW).

2. WINDSHIELD WIPER MOTOR ASSY

(a) LO Operation Check

1.  Connect the positive (+) lead from the battery to terminal 1 (+1) and the negative (-) lead to terminal 5 (E), check that the motor operates at low speed.

(b) HI Operation Check

1.  Connect the positive (+) lead from the battery to terminal 4 (+2) and the negative (-) lead to terminal 5 (E), and check that the motor operates at high speed.

(c) Automatic Stop Operation Check

1.  Connect the positive (+) lead from the battery to terminal 1 (+1) and the negative (-) lead to terminal 5 (E), and operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 1 (+1).
2.  Connect terminals 1 (+1) and 3 (S).
3.  Connect the positive (+) lead from the battery to terminal 2 (B), and check that the motor stops running at the stop position after the motor operates again.

3. REAR WIPER MOTOR ASSY

(a) Operation Check

1.  Connect the positive (+) lead from the battery to terminal 1 (+B) and the negative (-) lead to terminal 3 (LS), and check that the motor operates.

NOTICE: The body earth should be connected.

(b) Automatic Stop Position Operation Check

1.  Connect the positive (+) lead from the battery to terminal 1 (+B) and the negative (-) lead to terminal 3 (LS).

NOTICE: The body earth should be connected.

2.  With the motor being rotated, disconnect terminal 1 (+B) and terminal 3 (LS) to stop the motor operation at any position except the automatic stop position.
3.  Connect the positive (+) lead from the battery to terminal 1 (+B), and check that the motor is restarted and automatically stopped.

NOTICE: The body earth should be connected.

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