Wiper Wash Function Not Working

SYMPTOM
* WIPER WASH FUNCTION NOT WORKING

POSSIBLE CAUSES
- Do wipers operate
- Open washer pump control circuit
- Open washer pump control switch output CKT
- Open ground circuit/washer pump connector
- Defective washer pump
- DEF multi-function switch/washer switch
- DEF BCM/Wiper operates
- BCM/Washer pump control CKT
- DEF BCM/Washer switch
- Default BCM/10 VOLTS