Initial Inspection and Diagnostic Overview

INSPECT WIPER SWITCH CONTINUITY

w/ Mist Wiper:

w/ Intermittent Wiper:

If continuity is not as specified, replace the switch.

INSPECT WASHER SWITCH CONTINUITY

w/ Mist Wiper:

w/ Intermittent Wiper:

If continuity is not as specified, replace the switch.

INSPECT INTERMITTENT WIPER OPERATION

a. Turn the wiper switch to INT position.




b. Variable Type:
Turn the intermittent time control switch to FAST position.
c. Connect the positive (+) lead from the battery to terminal 4/9 and the negative (-) lead to terminal 1/9.
d. Connect the positive (+) lead from the voltmeter to terminal 8/9 and the negative (-) lead to terminal 1/9, check that the meter needle indicates battery positive voltage.




e. After connecting terminal 7/9 to terminal 4/9, connect to terminal 1/9.
Then, check that the voltage rises from 0 volts to battery positive voltage within the times, as shown in the table.




Non Variable Type




Variable Type

If operation is not as specified, replace the wiper and washer switch.




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




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

INSPECT WIPER MOTOR OPERATION
Stopping at Stop Position




a. Operate the motor at low speed and stop the motor operation anywhere except at the stop position 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 the negative (-) lead from the battery to the motor body, 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 WASHER MOTOR OPERATION
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.