Component Tests and General Diagnostics

INSPECTION




1. INSPECT FRONT WIPER AND WASHER SWITCH CONTINUITY




If continuity is not as specified, replace the switch.




2. INSPECT INTERMITTENT 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 16 and the negative (-) lead to terminal 2.
d. Connect the positive (+) lead from the voltmeter to terminal 7 and the negative (-) lead to terminal 2, check that the meter needle indicates battery positive voltage.




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




3. INSPECT REAR WIPER AND WASHER SWITCH CONTINUITY




If continuity is not as specified, replace the switch.




4. INSPECT WASHER LINKED OPERATION
a. Connect the positive (+) lead from the battery to terminal 16 and the negative (-) lead to terminal 2.
b. Connect the positive (+) lead from the voltmeter to terminal 7 and the negative (-) lead to terminal 2.
c. Push in the washer switch, and check that the voltage changes as shown in the chart.




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




5. Low Speed:
INSPECT FRONT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead from the battery to the terminal 1, and check that the motor operates at low speed.
If operation is not as specified, replace the motor.




6. High Speed:
INSPECT FRONT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead from the battery to the terminal 1, and check that the motor operates at high speed.
If operation is not as specified, replace the motor.

7. Stopping at Stop Position:
INSPECT FRONT WIPER MOTOR OPERATION




a. Operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 5.




b. Connect terminals 2 and 5.
c. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead from the battery to the terminal 1, and check that the motor stops running at the stop position after the motor has operated again.
If operation is not as specified, replace the motor.




8. INSPECT REAR WIPER RELAY CONTINUITY
a. Check that no continuity exists between terminals 3 and 4.
b. Check that continuity exists between terminals 4 and 5. If continuity is not as specified, replace the relay.




9. INSPECT REAR WIPER RELAY OPERATION
a. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 6.
b. Connect the positive (+) lead from the voltmeter to terminal 5 and the negative (-) lead to terminal 6, check that the meter needle indicates 0 volts.
c. Connect the positive (+) lead from the voltmeter to terminal 4 and the negative (-) lead to terminal 6, check that the meter needle indicates battery voltage.
If operation is not as specified, replace the relay.




10. INSPECT REAR WIPER RELAY INTERMITTENT OPERATION
a. Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 2 for more than 2 seconds.
b. Connect the positive (+) lead from the voltmeter to terminal 4 and the negative (-) lead to terminal 2.
c. After disconnecting the positive (+) lead from terminal 5 connect it to terminal 3, and then, check the voltmeter needle within 9 to 15 seconds.
If operation is not as specified, replace the relay.




11. 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.