Wiper Wash Function Not Working

Test 1 - 4:

Test 5 - 9:

Test 10 - 11:

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