Hummer H1 Service Manual page 861

12-88 Electrical System
Steps
10 Remove the rear wiper switch from the instru-
ment panel. Disconnect the wiper switch harness
from the switch. Turn the ignition switch to the
"RUN" position. With a DVOM check voltage
on the yellow wire (CKT 65). Is the specified
voltage present?
11 With a DVOM check the black wire CKT 59 for
ground. Is a ground present?
12 Using a DVOM check the resistance between the
brown wire (CKT 67) and cavity F1 in the interior
fuse box. Is resistance in specified range?
4-1-00
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Rear Window Wiper Inoperative (Continued)
Action Values Yes
12v Go to step 11.
<.2 Ω
Go to step 12.
<.2 Ω
Replace rear
wiper switch.
®
No
Repair the open
or bad connec-
tion on CKT 65.
Repair open or
bad ground
CKT 59.
Repair open or
bad connection
in CKT 67.