Test E: The Washer Pump Is Inoperative

PINPOINT TEST E: THE WASHER PUMP IS INOPERATIVE

E1:

E2-E4:

E5-E8:

Normal Operation
When the wash function is selected by the operator, the multifunction switch grounds circuit 680 (LB/OG) to the windshield wiper motor. The windshield wiper motor interprets this ground signal and energizes the internal washer relay. Voltage is sent to the washer pump from the windshield wiper motor through circuit 941 (BK/WH). The windshield washer pump motor is grounded through circuit 57 (BK). The multifunction switch is grounded through circuit 57 (BK).

Possible Causes
- circuit 57 (BK) open
- circuit 680 (LB/OG) open
- circuit 941 (BK/WH) open
- multifunction switch
- windshield washer pump
- windshield wiper motor