Test U

PINPOINT TEST U: THE INTERMITTENT WIPER SPEED DOES NOT OPERATE CORRECTLY (HIGH/LOW SPEEDS OK)

Test U1-U3:

Test U4-U5:

Normal Operation
Under normal operation the front wiper motor receives open and ground inputs from the multifunction switch through circuits 671 (LB), 680 (LB/OG), 682 (DB) and 684 (PK/YE) to activate the wipers to the appropriate speeds.

Possible Causes
- Open in circuits 682 (DB), 680 (LB/OG), 684 (PK/YE), 671 (LB) or 1302 (WH/LG).
- Inoperative front wiper motor.
- Inoperative multifunction switch.