Test D: The Intermittent Wiper Speed Does Not Operate Correctly (High/Low Speeds OK)

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

D1-D2:

D2-D4:

Normal Operation
The windshield wiper motor receives inputs from the multifunction switch circuits 8-KA8 (WH/RD), 10-KA8 (GY/RD), 8-KA11 (WH/BK), and 8-KA10 (WH/GN). The wiper motor module (internal) controls the wiper run/park relay (internal) using internal circuitry to control the windshield wiper motor in conjunction with the wiper Hi/Lo relay (internal).

Possible Causes
- circuit 10-KA8 (GY/RD) open
- multifunction switch
- windshield wiper motor