Initial Inspection and Diagnostic Overview

INSPECT FRONT WIPER AND WASHER SWITCH CONTINUITY
If continuity is not as specified, replace the switch.

INSPECT INTERMITTENT WIPER OPERATION
a. Turn the wiper switch to INT position.
b. Turn the intermittent time control switch to FAST position.




c. Connect the positive (+) lead from the battery to terminal a 17 and the negative (-) lead to terminal 16.
d. Connect the positive (+) lead from the voltmeter to terminal 7 and the negative (-) lead to terminal 16, check that the meter needle indicates battery positive voltage







e. After connecting terminal 2 to terminal 17, connect it to terminal 16.
Then, check that the voltage rises from 0 V to battery positive voltage within the time, as shown in the table.
If operation is not as specified, replace the switch.







INSPECT REAR WIPER AND WASHER SWITCH CONTINUITY
If continuity is not as specified, replace the switch.




INSPECT FRONT WIPER MOTOR OPERATION
Low Speed:
Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1, check that the motor operates at low speed.
If operation is not as specified, replace the motor.




INSPECT FRONT WIPER MOTOR OPERATION
High Speed:
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1 check that the motor operates at high speed.
If operation is not as specified, replace the motor.

INSPECT FRONT WIPER MOTOR OPERATION
Stopping at Stop Position:




a. Operate the motor at low speed and stop the motor operation anywhere by disconnecting positive (+) lead from terminal 3.
b. Connect terminals 3 and 5.




c. Connect the positive (+) lead from the battery to terminal 6 and negative (-) lead to terminal 1 , check that the motor stops running at the stop position after the motor operates again.
If operation is not as specified, replace the motor.

INSPECT REAR WIPER MOTOR AND RELAY OPERATION




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




b. Disconnect the negative (-) lead from terminal 3, check that the motor stops running at the stop position.
If operation is not as specified, replace the motor and relay.




INSPECT REAR WIPER MOTOR AND RELAY OPERATION
Intermittent:
Connect the positive (+) lead from the battery to terminal 1, and the negative (-) lead to terminal 2 and the motor body, check that the motor operates intermittently for 9 - 15 seconds.
If operation is not as specified, replace the motor and relay.




INSPECT WASHER MOTOR OPERATION (w/ Rear Wiper)
Front Washer:
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, check that the motor operates.

NOTE: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.

If operation is not as specified, replace the motor




INSPECT WASHER MOTOR OPERATION (w/ Rear Wiper)
Rear Washer:
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3, check that the motor operates.

NOTE: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.

If operation is not as specified, replace the motor.




INSPECT WASHER MOTOR OPERATION (w/o Rear Wiper)
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, check that the motor operates.

NOTE: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.

If operation is not as specified, replace the motor.