Component Tests and General Diagnostics

INSPECTION

1. WINDSHIELD WIPER SWITCH ASSEMBLY




a. Continuity Check
1. Check the continuity of each terminal of the connector




Front Wiper Switch




Front Washer Switch




Rear Wiper Switch

b. Intermittent Operation Check (Front Wiper)
1. Connect the positive (+) lead from the voltmeter to terminal 7 (+1) and the negative (-) lead to terminal 2 (EW).
2. Connect the positive (+) lead from the battery to terminal 17 (+B) and the negative (-) lead to terminal 2 (EW) and 16 (+S).
3. Turn the wiper switch INT position.
4. Connect the positive (+) lead from the battery for 5 sec.




5. Connect the negative (-) lead from the battery to terminal 16 (+5), 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 terminal 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 ASSEMBLY




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), 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), 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), check that the motor stops running at the stop position after the motor operates again.

3. REAR WIPER MOTOR ASSEMBLY




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

NOTE: The body earth should be connected.




b. Automatic Stop Position Operation Check
1. Connect the positive (+) lead from the battery to terminal 3 (+B) and the negative (-) lead to terminal 1 (LS).

NOTE: The body earth should be connected.

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