Diesel Data: Automotive Repair
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Wiper Motor and Switch

INSPECTION










1. WINDSHIELD WIPER SWITCH ASSY
a. Measure the resistance according to the value(s) in the table.




b. Intermittent Operation Check
1. Connect the voltmeter (+) terminal to terminal C11-7 (+1) of the connector and the voltmeter (-) terminal to terminal C11-2 (EW).
2. Connect the positive battery (+) lead to terminal C11-17 (+B) of the connector and the negative battery (-) lead to terminals C11-2 (EW) and C11-16 (+S).
3. Turn the wiper switch to the INT position.
4. Connect the positive battery (+) lead to terminal C11-16 (+S) of the connector for 5 seconds.
5. Connect the negative battery (-) lead to terminal C11-16 (+S) of the connector. Operate the intermittent wiper relay and measure the voltage between terminals C11-7 (+1) and C11-2 (EW).
Standard: Refer to the illustration.




c. Front Washer Operation Check
1. Turn the wiper switch to the OFF position.
2. Connect the positive battery (+) lead to terminal C11-17 (+B) of the connector, and the negative battery (-) to terminals C11-16 (+S) and C11-2 (EW).
3. Connect the voltmeter (+) terminal to terminal C11-7 (+1) of the connector and the voltmeter (-) terminal to terminal C11-2 (EW). Measure the voltage between terminals C11-7 (+1) and C11-2 (EW) when turning the washer switch ON and OFF respectively.
Standard: Refer to the illustration.




2. WINDSHIELD WIPER MOTOR ASSY
a. LO Operation Check
1. Connect the positive battery (+) lead to terminal 1 (+1) of the connector and the negative battery (-) lead to terminal 5 (E) of the connector, and check that the motor operates at low speed (LO).

b. HI Operation Check
1. Connect the positive battery (+) lead to terminal 4 (+2) of the connector and the negative battery (-) lead to terminal 5 (E), and check that the motor operates at high speed (HI).

c. Automatic Stop Operation Check
1. Connect the positive battery (+) lead to terminal 1 (+1) of the connector and the negative battery (-) lead 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. Using SST, connect terminals 1 (+1) and 3 (S), and the positive battery (+) lead to terminal 2 (B) to restart the motor operation at low speed (LO).
SST 09843-18040




3. Check that the motor stops automatically at the automatic stop position.
Standard: Refer to the illustration.
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