Wiper Relay: Testing and Inspection

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.




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.




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.